Countersunk Screw allen key No. 6-40 UNF x 1/2"

Countersunk Screw allen key No. 6-40 UNF x 1/2"

American Fine Thread UNF

Thread type: UNF (Unified National Fine)

Thread pitch: 40 threads per inch (TPI)

Standards: ASME/ANSI B18.3-2002

Material specification: ASTM A574

Hardness: HRC 38–43

Thread class: 3A (Class Fit)

Material: Heat-treated alloy steel, 1960 series

Similar to: DIN 7991 (similar design)

Dimensions:

Overall length including head: 1/2 inch = 12.70 mm

Thread diameter: 3.51 mm

Hex key size (internal hex drive): 5/64 inch

Applications: Ideal for use in vehicles, motorcycles, boats, aircraft, and archery.

Tip: Suitable for compound and recurve bows, archery, sight mounts

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