Flat head hex drive screw 1/4-28 X 1 UNF black oxide

Technical Information

Measurement System

Imperial

Thread Type

UNF (fine)

Diameter - Thread Size

1/4-28

Length Under Head

1 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

0.531 in W X 0.161 in H

Key Size

5/32 in

Hardness

Rockwell C39