Knobs - Lobe - Three Lobe - Male - Standard

Knobs -> Lobe -> Three Lobe -> Male -> Standard

There are 4 products in the sub-categories of Knobs - Lobe - Three Lobe - Male - Standard. Browse the Knobs - Lobe - Three Lobe - Male - Standard products table.

Category Details

A selection of Standard Male Three Lobe Lobe Knobs. Also see star knobs

  • An expanded range may be available on special order. Please enquire.

Small Parts & Bearings

Additional resources:


A more comprehensive listing may be found in the Knobs - Lobe - Three Lobe - Male - Standard category on the MBA Minibearings main store.
Thread Size Head Diameter (A) Thread Length Colour Hub Diameter (C) Hub Length (D) Indicative
Image
Lobe Knobs - 1/4-20 UNC - 6.35mm - 39.88x31.8 mm Three Lobe - Plated Steel Knob
Thread Size
1/4-20 UNC (6.35mm)

Head Diameter (A)
39.88
mm

(Equiv. 1.57 in.)
Thread Length
31.8
mm

(Equiv. 1.252 in.)
Colour
Black
Hub Diameter (C)
16.00
mm
Hub Length (D)
7.87
mm
Lobe Knobs - 1/4-20 UNC -6.35mm- 39.88x31.8 mm - Plated Steel
Material: Plated Steel    Knob Height (B): 24.89 mm   
Part Number: KM064C-040-3L (Each)
10 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$5.23 AUD
$6.27 AUD $5.23 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 10 available can be backordered.
Thread Size Head Diameter (A) Thread Length Colour Indicative
Image
Lobe Knobs - 1/4-20 UNC - 6.35mm - 39.88x31.8 mm Three Lobe - Plated Steel Knob
Thread Size
1/4-20 UNC (6.35mm)

Head Diameter (A)
39.88
mm

(Equiv. 1.57 in.)
Thread Length
31.8
mm

(Equiv. 1.252 in.)
Colour
Black
Lobe Knobs - 1/4-20 UNC -6.35mm- 39.88x31.8 mm - Plated Steel
Material: Plated Steel    Hub Diameter (C): 16.00 mm    Hub Length (D): 7.87 mm    Knob Height (B): 24.89 mm   
Part Number: KM064C-040-3L (Each)
10 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$5.23 AUD
$6.27 AUD $5.23 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

10 Available Now. Backorder if more than 10.
Lobe Knobs - 5/16-18 UNC - 7.94mm - 39.88x38.1 mm Three Lobe - Plated Steel Knob
Thread Size
5/16-18 UNC (7.94mm)

Head Diameter (A)
39.88
mm

(Equiv. 1.57 in.)
Thread Length
38.1
mm

(Equiv. 1.5 in.)
Colour
Black
Hub Diameter (C)
16.00
mm
Hub Length (D)
7.87
mm
Lobe Knobs - 5/16-18 UNC -7.94mm- 39.88x38.1 mm - Plated Steel
Material: Plated Steel    Knob Height (B): 24.89 mm   
Part Number: KM079C-040-3LL (Each)
4 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$7.41 AUD
$7.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 4 available can be backordered.
Lobe Knobs - 5/16-18 UNC - 7.94mm - 39.88x38.1 mm Three Lobe - Plated Steel Knob
Thread Size
5/16-18 UNC (7.94mm)

Head Diameter (A)
39.88
mm

(Equiv. 1.57 in.)
Thread Length
38.1
mm

(Equiv. 1.5 in.)
Colour
Black
Lobe Knobs - 5/16-18 UNC -7.94mm- 39.88x38.1 mm - Plated Steel
Material: Plated Steel    Hub Diameter (C): 16.00 mm    Hub Length (D): 7.87 mm    Knob Height (B): 24.89 mm   
Part Number: KM079C-040-3LL (Each)
4 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$7.41 AUD
$7.41 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

4 Available Now. Backorder if more than 4.
Lobe Knobs - 5/16-18 UNC - 7.94mm - 50.04x44.5 mm Three Lobe - Plated Steel Knob
Thread Size
5/16-18 UNC (7.94mm)

Head Diameter (A)
50.04
mm

(Equiv. 1.97 in.)
Thread Length
44.5
mm

(Equiv. 1.752 in.)
Colour
Black
Hub Diameter (C)
21.08
mm
Hub Length (D)
8.89
mm
Lobe Knobs - 5/16-18 UNC -7.94mm- 50.04x44.5 mm - Plated Steel
Material: Plated Steel    Knob Height (B): 30.99 mm   
Part Number: KM079C-050-3LL (Each)
7 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$6.50 AUD
$7.80 AUD $6.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 7 available can be backordered.
Lobe Knobs - 5/16-18 UNC - 7.94mm - 50.04x44.5 mm Three Lobe - Plated Steel Knob
Thread Size
5/16-18 UNC (7.94mm)

Head Diameter (A)
50.04
mm

(Equiv. 1.97 in.)
Thread Length
44.5
mm

(Equiv. 1.752 in.)
Colour
Black
Lobe Knobs - 5/16-18 UNC -7.94mm- 50.04x44.5 mm - Plated Steel
Material: Plated Steel    Hub Diameter (C): 21.08 mm    Hub Length (D): 8.89 mm    Knob Height (B): 30.99 mm   
Part Number: KM079C-050-3LL (Each)
7 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$6.50 AUD
$7.80 AUD $6.50 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

7 Available Now. Backorder if more than 7.
Lobe Knobs - 3/8-16 UNC - 9.53mm - 39.88x38.1 mm Three Lobe - Plated Steel Knob
Thread Size
3/8-16 UNC (9.53mm)

Head Diameter (A)
39.88
mm

(Equiv. 1.57 in.)
Thread Length
38.1
mm

(Equiv. 1.5 in.)
Colour
Black
Hub Diameter (C)
16.00
mm
Hub Length (D)
7.87
mm
Lobe Knobs - 3/8-16 UNC -9.53mm- 39.88x38.1 mm - Plated Steel
Material: Plated Steel    Knob Height (B): 24.89 mm   
Part Number: KM095C-040-3LL (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$8.14 AUD
$8.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

Larger quantities than the 1 available can be backordered.
Lobe Knobs - 3/8-16 UNC - 9.53mm - 39.88x38.1 mm Three Lobe - Plated Steel Knob
Thread Size
3/8-16 UNC (9.53mm)

Head Diameter (A)
39.88
mm

(Equiv. 1.57 in.)
Thread Length
38.1
mm

(Equiv. 1.5 in.)
Colour
Black
Lobe Knobs - 3/8-16 UNC -9.53mm- 39.88x38.1 mm - Plated Steel
Material: Plated Steel    Hub Diameter (C): 16.00 mm    Hub Length (D): 7.87 mm    Knob Height (B): 24.89 mm   
Part Number: KM095C-040-3LL (Each)
1 Available Now | Further orders can be expected around Mon, Jan 19, 2026
$8.14 AUD
$8.14 AUD
Each
Excludes GST and overseas Taxes & Duties
Quantity Required

1 Available Now. Backorder if more than 1.