Flat head hex drive screw 5/16-18 X 3 UNC black oxide

Technical Information

Measurement System

Imperial

Thread Type

UNC (coarse)

Diameter - Thread Size

5/16-18

Length Under Head

3 in

Drive Type

Female hex (socket)

Material

Steel

Finish

Black oxide

Type

Partially threaded

Head Type

Flat

Tensile Strength

130 000 PSI

ASTM Specification

F835

Head Size

0.656 in W X 0.198 in H

Minimum Thread Length

1-1/8 in

Key Size

3/16 in

Hardness

Rockwell C39