Screws

1917 Products in this selection
Combined category including sub-categories of screws. These include socket cap, button, cap tipped, set, shoulder, thumb, wood, ultra low head, countersunk, self tapping, low head socket, fillister head, hex washer head, pan head, hex head, round head, coach, large shallow head, binder head, self drilling, security, panel, roof bolt, and captive.
Small Parts & Bearings

Additional resources:
PDF Screws Catalogue
Washers
Nuts

A more comprehensive listing may be found on the MBA Minibearings main store at Screws.
Thread Knob Style - Indicative
Image
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
304 Stainless
Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Button - Socket
Part Number: SC028C-010-B-SK-S4 (PK-10) Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket Screw
7 units (70 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.32 AUD
$4.27 AUD $2.32 AUD
Per 10
Thread Knob Style - Indicative
Image
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
304 Stainless
Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Button - Socket
Part Number: SC028C-010-B-SK-S4 (PK-10) Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket Screw
7 units (70 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.32 AUD
$4.27 AUD $2.32 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
9.5

+ 0.0 / - 0.76
(Equiv. 0.374 in.)
-
304 Stainless
Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Countersunk - Socket
Part Number: SK028C-010-SK-S4 (PK-100) Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Jul 14, 2026
$8.68 AUD
$16.29 AUD $8.68 AUD
Per 100
Thread
4-40 UNC (2.85mm)
Knob Style
9.5

+ 0.0 / - 0.76
(Equiv. 0.374 in.)
-
304 Stainless
Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Countersunk - Socket
Part Number: SK028C-010-SK-S4 (PK-100) Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - 304 Stainless Socket Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Jul 14, 2026
$8.68 AUD
$16.29 AUD $8.68 AUD
Per 100
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
Alloy Steel
Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - Alloy Steel Socket
Material: Steel Alloy   
Category: Screws - Button - Socket
Part Number: SC028C-010-B-SK-C (PK-20) Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - Alloy Steel Socket Screw
1 pack (20 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.59 AUD
$4.81 AUD $2.59 AUD
Per 20
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
Alloy Steel
Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - Alloy Steel Socket
Material: Steel Alloy   
Category: Screws - Button - Socket
Part Number: SC028C-010-B-SK-C (PK-20) Button Screws - 4-40 UNC - 2.85mm - 9.5 mm - Alloy Steel Socket Screw
1 pack (20 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.59 AUD
$4.81 AUD $2.59 AUD
Per 20
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
High Tensile Steel / Black Oxide
Socket Cap Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Alloy Steel
Material: High Tensile Steel Black Oxide   
Category: Screws - Socket Cap - Alloy Steel
Part Number: SC028C-010-C-SK-C (PK-10) Socket Cap Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Alloy Steel Screw
95 units (950 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$5.14 AUD
$5.14 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
High Tensile Steel / Black Oxide
Socket Cap Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Alloy Steel
Material: High Tensile Steel Black Oxide   
Category: Screws - Socket Cap - Alloy Steel
Part Number: SC028C-010-C-SK-C (PK-10) Socket Cap Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Alloy Steel Screw
95 units (950 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$5.14 AUD
$5.14 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
9.5

+ 0.0 / - 0.76
(Equiv. 0.374 in.)
-
High Tensile Steel / Black Oxide
Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Socket
Material: High Tensile Steel Black Oxide   
Category: Screws - Countersunk - Socket
Part Number: SK028C-010-SK-C (PK-10) Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Socket Screw
7 units (70 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.68 AUD
$4.99 AUD $2.68 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
9.5

+ 0.0 / - 0.76
(Equiv. 0.374 in.)
-
High Tensile Steel / Black Oxide
Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Socket
Material: High Tensile Steel Black Oxide   
Category: Screws - Countersunk - Socket
Part Number: SK028C-010-SK-C (PK-10) Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - High Tensile Steel / Black Oxide Socket Screw
7 units (70 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.68 AUD
$4.99 AUD $2.68 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
11.1
-
303 Stainless
Socket Cap Screws - 4-40 UNC - 2.85mm - 11.1 mm - 303 Stainless
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Socket Cap - Stainless
Part Number: SC028C-011-C-SK-S3 (PK-10) Socket Cap Screws - 4-40 UNC - 2.85mm - 11.1 mm - 303 Stainless Screw
100 units (1000 pcs) Available Now | Further orders can be expected around Fri, Sep 18, 2026
$2.41 AUD
$4.33 AUD $2.41 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
11.1
-
303 Stainless
Socket Cap Screws - 4-40 UNC - 2.85mm - 11.1 mm - 303 Stainless
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Socket Cap - Stainless
Part Number: SC028C-011-C-SK-S3 (PK-10) Socket Cap Screws - 4-40 UNC - 2.85mm - 11.1 mm - 303 Stainless Screw
100 units (1000 pcs) Available Now | Further orders can be expected around Fri, Sep 18, 2026
$2.41 AUD
$4.33 AUD $2.41 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
Nylon (Zytel 101)
Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - Nylon - Zytel 101 - Slotted
Material: Nylon (Polyamide 6/6)   
Category: Screws - Countersunk - Slotted
Part Number: SK028C-010-SL-N (PK-10) Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - Nylon - Zytel 101 - Slotted Screw
9 units (90 pcs) Available Now | Item Discontinued - Up to 9 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
Nylon (Zytel 101)
Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - Nylon - Zytel 101 - Slotted
Material: Nylon (Polyamide 6/6)   
Category: Screws - Countersunk - Slotted
Part Number: SK028C-010-SL-N (PK-10) Countersunk Screws - 4-40 UNC - 2.85mm - 9.5 mm - Nylon - Zytel 101 - Slotted Screw
9 units (90 pcs) Available Now | Item Discontinued - Up to 9 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
Zinc Plated Steel
Pan Head Screws - 4-40 UNC - 2.85mm - 9.5 mm - Zinc Plated Steel Phillips
Material: Zinc Plated Steel   
Category: Screws - Pan Head - Phillips
Part Number: SC028C-010-P-PH-CZ (PK-50) Pan Head Screws - 4-40 UNC - 2.85mm - 9.5 mm - Zinc Plated Steel Phillips Screw
12 units (600 pcs) Available Now | Item Discontinued - Up to 12 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 50
Thread
4-40 UNC (2.85mm)
Knob Style
9.5
-
Zinc Plated Steel
Pan Head Screws - 4-40 UNC - 2.85mm - 9.5 mm - Zinc Plated Steel Phillips
Material: Zinc Plated Steel   
Category: Screws - Pan Head - Phillips
Part Number: SC028C-010-P-PH-CZ (PK-50) Pan Head Screws - 4-40 UNC - 2.85mm - 9.5 mm - Zinc Plated Steel Phillips Screw
12 units (600 pcs) Available Now | Item Discontinued - Up to 12 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 50
Thread
4-40 UNC (2.85mm)
Knob Style
9.53
-
14.29
Thumb Screws - 4-40 UNC - 2.85mm - 9.53x14.29 mm Knurled - Stainless Steel
Material: Stainless Steel   
Category: Screws - Thumb - Knurled
Part Number: THS028C-010-K-3 (Each) Thumb Screws - 4-40 UNC - 2.85mm - 9.53x14.29 mm Knurled - Stainless Steel Screw
3 Available Now | Item Discontinued - Up to 3 may be ordered online. No backorders. Please contact us if you need a larger quantity
$7.01 AUD
$8.41 AUD $7.01 AUD
Each
Thread
4-40 UNC (2.85mm)
Knob Style
9.53
-
14.29
Thumb Screws - 4-40 UNC - 2.85mm - 9.53x14.29 mm Knurled - Stainless Steel
Material: Stainless Steel   
Category: Screws - Thumb - Knurled
Part Number: THS028C-010-K-3 (Each) Thumb Screws - 4-40 UNC - 2.85mm - 9.53x14.29 mm Knurled - Stainless Steel Screw
3 Available Now | Item Discontinued - Up to 3 may be ordered online. No backorders. Please contact us if you need a larger quantity
$7.01 AUD
$8.41 AUD $7.01 AUD
Each
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
304 Stainless
Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Socket Cap - Stainless
Part Number: SC028C-013-C-SK-S4 (PK-20) Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Screw
27 units (540 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.41 AUD
$4.25 AUD $2.41 AUD
Per 20
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
304 Stainless
Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Socket Cap - Stainless
Part Number: SC028C-013-C-SK-S4 (PK-20) Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Screw
27 units (540 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.41 AUD
$4.25 AUD $2.41 AUD
Per 20
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
304 Stainless
Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Button - Socket
Part Number: SC028C-013-B-SK-S4 (PK-10) Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket Screw
4 units (40 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.50 AUD
$4.70 AUD $2.50 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
304 Stainless
Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Button - Socket
Part Number: SC028C-013-B-SK-S4 (PK-10) Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket Screw
4 units (40 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.50 AUD
$4.70 AUD $2.50 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
12.7

+ 0.0 / - 0.76
(Equiv. 0.5 in.)
-
304 Stainless
Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Countersunk - Socket
Part Number: SK028C-013-SK-S4 (PK-20) Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket Screw
3 units (60 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.32 AUD
$4.22 AUD $2.32 AUD
Per 20
Thread
4-40 UNC (2.85mm)
Knob Style
12.7

+ 0.0 / - 0.76
(Equiv. 0.5 in.)
-
304 Stainless
Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Countersunk - Socket
Part Number: SK028C-013-SK-S4 (PK-20) Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - 304 Stainless Socket Screw
3 units (60 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.32 AUD
$4.22 AUD $2.32 AUD
Per 20
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
11.11
-
19.05
Thumb Screws - 4-40 UNC - 2.85mm - 11.11x19.05 mm Knurled - Stainless Steel
Material: Stainless Steel   
Category: Screws - Thumb - Knurled
Part Number: THS028C-011-K-SS-WF (Each) Thumb Screws - 4-40 UNC - 2.85mm - 11.11x19.05 mm Knurled - Stainless Steel Screw
1 Available Now | Further orders can be expected around Sat, Aug 08, 2026
$8.77 AUD
$10.53 AUD $8.77 AUD
Each
Thread
4-40 UNC (2.85mm)
Knob Style
11.11
-
19.05
Thumb Screws - 4-40 UNC - 2.85mm - 11.11x19.05 mm Knurled - Stainless Steel
Material: Stainless Steel   
Category: Screws - Thumb - Knurled
Part Number: THS028C-011-K-SS-WF (Each) Thumb Screws - 4-40 UNC - 2.85mm - 11.11x19.05 mm Knurled - Stainless Steel Screw
1 Available Now | Further orders can be expected around Sat, Aug 08, 2026
$8.77 AUD
$10.53 AUD $8.77 AUD
Each
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
12.70
-
17.46
Thumb Screws - 4-40 UNC - 2.85mm - 12.7x17.46 mm Knurled - Brass
Material: Brass   
Category: Screws - Thumb - Knurled
Part Number: THS028C-013-K-BZ (Each) Thumb Screws - 4-40 UNC - 2.85mm - 12.7x17.46 mm Knurled - Brass Screw
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$9.00 AUD
$17.10 AUD $9.00 AUD
Each
Thread
4-40 UNC (2.85mm)
Knob Style
12.70
-
17.46
Thumb Screws - 4-40 UNC - 2.85mm - 12.7x17.46 mm Knurled - Brass
Material: Brass   
Category: Screws - Thumb - Knurled
Part Number: THS028C-013-K-BZ (Each) Thumb Screws - 4-40 UNC - 2.85mm - 12.7x17.46 mm Knurled - Brass Screw
1 Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$9.00 AUD
$17.10 AUD $9.00 AUD
Each
Thread
4-40 UNC (2.85mm)
Knob Style
12.7

+ 0.0 / - 0.76
(Equiv. 0.5 in.)
-
High Tensile Steel / Black Oxide
Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Socket
Material: High Tensile Steel Black Oxide   
Category: Screws - Countersunk - Socket
Part Number: SK028C-013-SK-C (PK-100) Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Socket Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Jul 14, 2026
$60.32 AUD
$60.32 AUD
Per 100
Thread
4-40 UNC (2.85mm)
Knob Style
12.7

+ 0.0 / - 0.76
(Equiv. 0.5 in.)
-
High Tensile Steel / Black Oxide
Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Socket
Material: High Tensile Steel Black Oxide   
Category: Screws - Countersunk - Socket
Part Number: SK028C-013-SK-C (PK-100) Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Socket Screw
Out of Stock | Backorder Now | Orders can be expected around Tue, Jul 14, 2026
$60.32 AUD
$60.32 AUD
Per 100
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Alloy Steel
Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - Alloy Steel Socket
Material: Steel Alloy   
Category: Screws - Button - Socket
Part Number: SC028C-013-B-SK-C (PK-20) Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - Alloy Steel Socket Screw
11 units (220 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.95 AUD
$5.45 AUD $2.95 AUD
Per 20
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Alloy Steel
Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - Alloy Steel Socket
Material: Steel Alloy   
Category: Screws - Button - Socket
Part Number: SC028C-013-B-SK-C (PK-20) Button Screws - 4-40 UNC - 2.85mm - 12.7 mm - Alloy Steel Socket Screw
11 units (220 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$2.95 AUD
$5.45 AUD $2.95 AUD
Per 20
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Black Oxide Steel
Pan Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Black Oxide Steel Phillips
Material: Black Oxide Steel   
Category: Screws - Pan Head - Phillips
Part Number: SC028C-013-P-PH-C (PK-50) Pan Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Black Oxide Steel Phillips Screw
19 units (950 pcs) Available Now | Item Discontinued - Up to 19 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 50
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Black Oxide Steel
Pan Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Black Oxide Steel Phillips
Material: Black Oxide Steel   
Category: Screws - Pan Head - Phillips
Part Number: SC028C-013-P-PH-C (PK-50) Pan Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Black Oxide Steel Phillips Screw
19 units (950 pcs) Available Now | Item Discontinued - Up to 19 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 50
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
High Tensile Steel / Black Oxide
Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Alloy Steel
Material: High Tensile Steel Black Oxide   
Category: Screws - Socket Cap - Alloy Steel
Part Number: SC028C-013-C-SK-C (PK-10) Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Alloy Steel Screw
9 units (90 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$5.23 AUD
$5.23 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
High Tensile Steel / Black Oxide
Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Alloy Steel
Material: High Tensile Steel Black Oxide   
Category: Screws - Socket Cap - Alloy Steel
Part Number: SC028C-013-C-SK-C (PK-10) Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - High Tensile Steel / Black Oxide Alloy Steel Screw
9 units (90 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$5.23 AUD
$5.23 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
15.9
-
304 Stainless
Countersunk Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Slotted
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Countersunk - Slotted
Part Number: SK028C-016-SL-S4 (PK-22) Countersunk Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Slotted Screw
1 pack (22 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$4.40 AUD
$8.36 AUD $4.40 AUD
Per 22
Thread
4-40 UNC (2.85mm)
Knob Style
15.9
-
304 Stainless
Countersunk Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Slotted
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Countersunk - Slotted
Part Number: SK028C-016-SL-S4 (PK-22) Countersunk Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Slotted Screw
1 pack (22 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$4.40 AUD
$8.36 AUD $4.40 AUD
Per 22
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Nylon (Zytel 101)
Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 -
Material: Nylon (Polyamide 6/6)   
Category: Screws - Socket Cap - Nylon
Part Number: SC028C-013-C-SK-N (PK-50) Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Screw
1 pack (50 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 50
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Nylon (Zytel 101)
Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 -
Material: Nylon (Polyamide 6/6)   
Category: Screws - Socket Cap - Nylon
Part Number: SC028C-013-C-SK-N (PK-50) Socket Cap Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Screw
1 pack (50 pcs) Available Now | Item Discontinued - Up to 1 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 50
Thread
4-40 UNC (2.85mm)
Knob Style
15.9
-
304 Stainless
Pan Head Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Phillips
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Pan Head - Phillips
Part Number: SC028C-016-P-PH-S4 (PK-10) Pan Head Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Phillips Screw
4 units (40 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$3.68 AUD
$3.68 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
15.9
-
304 Stainless
Pan Head Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Phillips
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Pan Head - Phillips
Part Number: SC028C-016-P-PH-S4 (PK-10) Pan Head Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Phillips Screw
4 units (40 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$3.68 AUD
$3.68 AUD
Per 10
View the product page first if you are unsure.
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Nylon (Zytel 101)
Hex Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted
Material: Nylon (Zytel 101)   
Category: Screws - Hex Head - Slotted
Part Number: SC028C-013-H-SL-N (PK-10) Hex Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted Screw
6 units (60 pcs) Available Now | Item Discontinued - Up to 6 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Nylon (Zytel 101)
Hex Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted
Material: Nylon (Zytel 101)   
Category: Screws - Hex Head - Slotted
Part Number: SC028C-013-H-SL-N (PK-10) Hex Head Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted Screw
6 units (60 pcs) Available Now | Item Discontinued - Up to 6 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Nylon (Zytel 101)
Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted
Material: Nylon (Polyamide 6/6)   
Category: Screws - Countersunk - Slotted
Part Number: SK028C-013-SL-N (PK-10) Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted Screw
7 units (70 pcs) Available Now | Item Discontinued - Up to 7 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
12.7
-
Nylon (Zytel 101)
Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted
Material: Nylon (Polyamide 6/6)   
Category: Screws - Countersunk - Slotted
Part Number: SK028C-013-SL-N (PK-10) Countersunk Screws - 4-40 UNC - 2.85mm - 12.7 mm - Nylon - Zytel 101 - Slotted Screw
7 units (70 pcs) Available Now | Item Discontinued - Up to 7 may be ordered online. No backorders. Please contact us if you need a larger quantity
$8.00 AUD
$15.20 AUD $8.00 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
15.9
-
304 Stainless
Button Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Button - Socket
Part Number: SC028C-016-B-SK-S4 (PK-10) Button Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Socket Screw
2 units (20 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$4.86 AUD
$4.86 AUD
Per 10
Thread
4-40 UNC (2.85mm)
Knob Style
15.9
-
304 Stainless
Button Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Socket
Material: Stainless Steel 304 (Similar to A2, 18-8) HRB80   
Category: Screws - Button - Socket
Part Number: SC028C-016-B-SK-S4 (PK-10) Button Screws - 4-40 UNC - 2.85mm - 15.9 mm - 304 Stainless Socket Screw
2 units (20 pcs) Available Now | Further orders can be expected around Tue, Jul 14, 2026
$4.86 AUD
$4.86 AUD
Per 10
View the product page first if you are unsure.