Flat head hex drive screw #4-40 X 3/8 UNC black oxide

Technical Information

Measurement System

Imperial

Thread Type

UNC (coarse)

Diameter - Thread Size

#4-40

Length Under Head

3/8 in

Drive Type

Female hex (socket)

Material

Steel

Finish

Black oxide

Type

Fully threaded

Head Type

Flat

Tensile Strength

130 000 PSI

ASTM Specification

F835

Head Size

0.255 in W X 0.083 in H

Key Size

1/16 in

Hardness

Rockwell C39