Allen Bolt M4x20mm, Dia. 4mm, Length 20mm Socket Head Cap Screws
Allen Bolt M4 x 20mm – Socket Head Cap Screw
Thread Diameter: 4mm (M4)
Length: 20mm (measured from under the head)
Head Type: Socket Head Cap Screw
Allen Key Size: 3mm
Material: Mild Steel
Finish: Black Oxide Coating
Description:
The Allen Bolt M4 x 20mm is a high-strength fastener designed for accurate and secure assembly. Made from durable mild steel with a protective black oxide coating, this bolt offers excellent performance in mechanical, automotive, and industrial applications. Its socket head design allows for precise torque application using a 3mm Allen key, ensuring firm and flush installation in compact spaces.
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Dia. |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
|
Key |
1.5 mm |
2 mm |
2.5 mm |
3 mm |
4 mm |
5 mm |
6 mm |
8 mm |
10 mm |
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Socket Countersunk Screws(CSK Bolts) |
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Dia. |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
|
Key |
|
|
2 mm |
2.5 mm |
3 mm |
4 mm |
5 mm |
6 mm |
8 mm |
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Socket Button Head Screws(Botton Bolts) |
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|
Dia. |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
|
Key |
|
|
2 mm |
2.5 mm |
3 mm |
4 mm |
5 mm |
6 mm |
8 mm |
|
Socket Set Screws(Grub Bolts) |
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|
Dia. |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
|
Key |
|
|
1.5 mm |
2 mm |
2.5 mm |
3 mm |
4 mm |
5 mm |
6 mm |
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Socket Head Cap Screws(Allen Bolts)


