Inserts - Self Tapping - For Aluminium

6 Products in this selection
This category includes various types of self tapping inserts.
  • Threaded bushing with external threads that cuts its own internal threads into a pre-drilled hole.
  • Creates a permanent, wear-resistant, and strong machine thread in materials such as aluminum, brass, cast iron, and plastics, without the need for a pre-tapped hole.
  • Used for strengthening materials, providing durable fastening points for machine screws, and repairing damaged threads.
Small Parts & Bearings

Additional resources:
Assortment Kits

A more comprehensive listing may be found on the MBA Minibearings main store at Inserts - Self Tapping - For Aluminium.
Internal Thread Rec. Hole Diameter Length (L) Outside Diameter (B) Indicative
Image
Internal Thread
6-32 UNC (3.5mm)
Rec. Hole Diameter
5.486
mm
Length (L)
5.0
mm
Outside Diameter (B)
5.994
mm
Self Tapping Inserts - 6-32 UNC - 3.5mm - 5.486x5 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 7.010 mm   
Category: Inserts - Self Tapping - For Aluminium - Stainless 303
Part Number: IN-TP-035C-05-A-S3 (Each) Self Tapping Inserts - 6-32 UNC - 3.5mm - 5.486x5 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
2 Available Now | Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity
$6.68 AUD
$8.02 AUD $6.68 AUD
Each
Internal Thread Rec. Hole Diameter Length (L) Outside Diameter (B) Indicative
Image
Internal Thread
6-32 UNC (3.5mm)
Rec. Hole Diameter
5.486
mm
Length (L)
5.0
mm
Outside Diameter (B)
5.994
mm
Self Tapping Inserts - 6-32 UNC - 3.5mm - 5.486x5 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 7.010 mm   
Category: Inserts - Self Tapping - For Aluminium - Stainless 303
Part Number: IN-TP-035C-05-A-S3 (Each) Self Tapping Inserts - 6-32 UNC - 3.5mm - 5.486x5 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
2 Available Now | Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity
$6.68 AUD
$8.02 AUD $6.68 AUD
Each
Internal Thread
M4 (4x0.7mm)
Rec. Hole Diameter
6.0
mm
Length (L)
6.0
mm
Outside Diameter (B)
6.50
mm
Self Tapping Inserts - M4 - 4x0.7mm - 6x6 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 8.00 mm   
Category: Inserts - Self Tapping - For Aluminium - Steel
Part Number: IN-TP-040M-06-A-S3 (PK-4) Self Tapping Inserts - M4 - 4x0.7mm - 6x6 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
1 pack (4 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 4
Internal Thread
M4 (4x0.7mm)
Rec. Hole Diameter
6.0
mm
Length (L)
6.0
mm
Outside Diameter (B)
6.50
mm
Self Tapping Inserts - M4 - 4x0.7mm - 6x6 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 8.00 mm   
Category: Inserts - Self Tapping - For Aluminium - Steel
Part Number: IN-TP-040M-06-A-S3 (PK-4) Self Tapping Inserts - M4 - 4x0.7mm - 6x6 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
1 pack (4 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 4
Internal Thread
M4 (4x0.7mm)
Rec. Hole Diameter
6.0
mm
Length (L)
8.0
mm
Outside Diameter (B)
6.50
mm
Self Tapping Inserts - M4 - 4x0.7mm - 6x8 mm For Aluminium - Carbon Steel Insert
Material: Carbon Steel    Required Hole Depth: 10.00 mm   
Category: Inserts - Self Tapping - For Aluminium - Steel
Part Number: IN-TP-040M-08-A-C (Each) Self Tapping Inserts - M4 - 4x0.7mm - 6x8 mm For Aluminium - Carbon Steel Insert
4 Available Now | Further orders can be expected around Wed, Aug 05, 2026
$43.95 AUD
$52.75 AUD $43.95 AUD
Each
Internal Thread
M4 (4x0.7mm)
Rec. Hole Diameter
6.0
mm
Length (L)
8.0
mm
Outside Diameter (B)
6.50
mm
Self Tapping Inserts - M4 - 4x0.7mm - 6x8 mm For Aluminium - Carbon Steel Insert
Material: Carbon Steel    Required Hole Depth: 10.00 mm   
Category: Inserts - Self Tapping - For Aluminium - Steel
Part Number: IN-TP-040M-08-A-C (Each) Self Tapping Inserts - M4 - 4x0.7mm - 6x8 mm For Aluminium - Carbon Steel Insert
4 Available Now | Further orders can be expected around Wed, Aug 05, 2026
$43.95 AUD
$52.75 AUD $43.95 AUD
Each
View the product page first if you are unsure.
Internal Thread
8-32 UNC (4.17mm)
Rec. Hole Diameter
5.994
mm
Length (L)
8.0
mm
Outside Diameter (B)
6.502
mm
Self Tapping Inserts - 8-32 UNC - 4.17mm - 5.994x8 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 10.008 mm   
Category: Inserts - Self Tapping - For Aluminium - Stainless 303
Part Number: IN-TP-042C-08-A-S3 (Each) Self Tapping Inserts - 8-32 UNC - 4.17mm - 5.994x8 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
2 Available Now | Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity
$7.95 AUD
$9.55 AUD $7.95 AUD
Each
Internal Thread
8-32 UNC (4.17mm)
Rec. Hole Diameter
5.994
mm
Length (L)
8.0
mm
Outside Diameter (B)
6.502
mm
Self Tapping Inserts - 8-32 UNC - 4.17mm - 5.994x8 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 10.008 mm   
Category: Inserts - Self Tapping - For Aluminium - Stainless 303
Part Number: IN-TP-042C-08-A-S3 (Each) Self Tapping Inserts - 8-32 UNC - 4.17mm - 5.994x8 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
2 Available Now | Item Discontinued - Up to 2 may be ordered online. No backorders. Please contact us if you need a larger quantity
$7.95 AUD
$9.55 AUD $7.95 AUD
Each
Internal Thread
5/16-18 UNC (7.94mm)
Rec. Hole Diameter
11.100
mm
Length (L)
13.7
mm
Outside Diameter (B)
12.014
mm
Self Tapping Inserts - 5/16-18 UNC - 7.94mm - 11.1x13.7 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 10.998 mm   
Category: Inserts - Self Tapping - For Aluminium - Stainless 303
Part Number: IN-TP-079C-13-A-S3 (PK-100) Self Tapping Inserts - 5/16-18 UNC - 7.94mm - 11.1x13.7 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Out of Stock | Backorder Now | Orders can be expected around Mon, Jul 20, 2026
$1,190.86 AUD
$1,190.86 AUD
Per 100
Internal Thread
5/16-18 UNC (7.94mm)
Rec. Hole Diameter
11.100
mm
Length (L)
13.7
mm
Outside Diameter (B)
12.014
mm
Self Tapping Inserts - 5/16-18 UNC - 7.94mm - 11.1x13.7 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Material: Stainless Steel 303/304 (Similar to A2, 18-8) HRB80    Required Hole Depth: 10.998 mm   
Category: Inserts - Self Tapping - For Aluminium - Stainless 303
Part Number: IN-TP-079C-13-A-S3 (PK-100) Self Tapping Inserts - 5/16-18 UNC - 7.94mm - 11.1x13.7 mm For Aluminium - Stainless Steel 303/304 Similar to A2, 18-8 HRB80 Insert
Out of Stock | Backorder Now | Orders can be expected around Mon, Jul 20, 2026
$1,190.86 AUD
$1,190.86 AUD
Per 100
View the product page first if you are unsure.
Internal Thread
M8 (8x1.25mm)
Rec. Hole Diameter
10.6 to 11.4mm
mm
Length (L)
15.0
mm
Outside Diameter (B)
M12
mm
Self Tapping Inserts - M8 - 8x1.25mm - 12.6 - 13.4 mm 15 mm For Aluminium - Stainless Steel 316 Similar to A4, 18-10 Insert
Material: Stainless Steel 316 (Similar to A4, 18-10)   
Category: Inserts - Self Tapping - For Aluminium - Stainless 316
Part Number: IN-TP-080M-15-A-S6 (Each) Self Tapping Inserts - M8 - 8x1.25mm - 10.6 to 11.4mm 15 mm For Aluminium - Stainless Steel 316 Similar to A4, 18-10 Insert
89 Available Now | Further orders can be expected around Tue, Sep 08, 2026
$4.23 AUD
$5.07 AUD $4.23 AUD
Each
Internal Thread
M8 (8x1.25mm)
Rec. Hole Diameter
10.6 to 11.4mm
mm
Length (L)
15.0
mm
Outside Diameter (B)
M12
mm
Self Tapping Inserts - M8 - 8x1.25mm - 12.6 - 13.4 mm 15 mm For Aluminium - Stainless Steel 316 Similar to A4, 18-10 Insert
Material: Stainless Steel 316 (Similar to A4, 18-10)   
Category: Inserts - Self Tapping - For Aluminium - Stainless 316
Part Number: IN-TP-080M-15-A-S6 (Each) Self Tapping Inserts - M8 - 8x1.25mm - 10.6 to 11.4mm 15 mm For Aluminium - Stainless Steel 316 Similar to A4, 18-10 Insert
89 Available Now | Further orders can be expected around Tue, Sep 08, 2026
$4.23 AUD
$5.07 AUD $4.23 AUD
Each
View the product page first if you are unsure.