Grade 5 Steel – Fine Thread

Grade 5 Steel – Fine Thread

HEX HEAD CAP SCREWS

Grade 5 steel. Plain or plated. National Fine Thread

DIAMETER THREAD
LENGTH 14-28 516-24 38-24 716-20 12-20 916-18 58-18 34-16 78-141-14
12 S S S
58 S S S
34 S S S S S
78 S S S S S
1 S S S S S S S S
1 14 S S S S S S S S
1 12 S S S S S S S S S
1 34 S S S S S S S S S
2 S S S S S S S S S S
2 14 S S S S S S S S S S
2 12 S S S S S S S S S S
2 34 S S S S S S S S S S
3 S S S S S S S S S S
3 14 S S S S S S S S S
3 12 S S S S S S S S S S
3 34 S S S S S S S S S
4 S S S S S S S S S S
4 12 S S S S S S S S S S
5 S S S S S S S S S S
5 12 S S S S S S S S S S
6 S S S S S S S S S
6 12 S S S S
7 S S S S S S S S S
7 12 S S S S S S S S
8 S S S S S S S S S

Grade 8 Steel – Yellow Plated Fine Thread

Grade 8 Steel – Yellow Plated Fine Thread

HEX HEAD CAP SCREWS

Grade 8 steel. Plain or Zinc/Yellow Plated. National coarse Thread

DIAMETER THREAD
LENGTH 14-28 516-24 38-24 716-20 12-20 916-18 58-18 34-16 78-14 1-14 1 18-12 1 14-12 1 12-12
38 S
12 S S S
58 S S S
34 S S S S S
78 S S S S S
1 S S S S S S S S
1 14 S S S S S S S S
1 12 S S S S S S S S S S
1 34 S S S S S S S S S S
2 S S S S S S S S S S
2 14 S S S S S S S S S S
2 12 S S S S S S S S S S S* S* S*
2 34 S S S S S S S S S S
3 S S S S S S S S S S S* S* S*
3 14 S S S S S S S S S
3 12 S S S S S S S S S S S* S* S*
3 34 S S S S S S S S S S* S* S*
4 S S S S S S S S S S S* S* S*
4 12 S S S S S S S S S S S* S* S*
5 S S S S S S S S S S S* S* S*
5 12 S S S S S S S S S S S* S* S*
6 S S S S S S S S S S S* S* S*
6 12 S S S S S S S S S S* S* S*
7 S S S S S S S S S S* S* S*
7 12 S S S S S S S S S S* S* S*
8 S S S S S S S S S S* S* S*
9 S* S* S*
10 S* S* S*
11 S* S* S*
12 S* S* S*

Grade 8 Steel – Yellow Plated Coarse Thread

Grade 8 Steel – Yellow Plated Coarse Thread

HEX HEAD CAP SCREWS

Grade 8 Steel. Plain or Zinc/Yellow Plated. National Coarse Thread.

DIAMETER-THREAD
LENGTH 14-20 516-18 38-16 716-14 12-13 916-12 58-11 34-10 78-9 1-8 1 18-7 1 14-7 1 12-6
12 S S S
58 S S S
34 S S S S
78 S S S S
1 S S S S S S
1 14 S S S S S S S
1 12 S S S S S S S S
1 34 S S S S S S S S
2 S S S S S S S S S S S S S
2 14 S S S S S S S S S S S S S
2 12 S S S S S S S S S S S S S
2 34 S S S S S S S S S S S S S
3 S S S S S S S S S S S S S
3 14 S S S S S S S S S S S S S
3 12 S S S S S S S S S S S S S
3 34 S S S S S S S S S S S S S
4 S S S S S S S S S S S S S
4 12 S S S S S S S S S S S S
5 S S S S S S S S S S S S
5 12 S S S S S S S S S S S S
6 S S S S S S S S S S S S

Grade 5 Steel

Grade 5 Steel

HEX HEAD CAP SCREWS

Grade 5 steel. Plain or plated. National coarse Thread

DIAMETER THREAD
LENGTH 14-20 14-18 516-16 516-14 38-13 38-12 12-11 12-10 58-9 34-8 78-7 78-7 78-6
12 S
13 S S S
53 S S S
34 S S S S S
34 S S S S S
1 S S S S S S S S
1 14 S S S S S S S S
1 33 S S S S S S S S S S
1 24 S S S S S S S S S S
2 S S S S S S S S S S
2 14 S S S S S S S S S S
2 13 S S S S S S S S S S S* S* S*
2 15 S S S S S S S S S
3 S S S S S S S S S S S* S* S*
3 13 S S S S S S S S
3 12 S S S S S S S S S S S* S* S*
3 14 S S S S S S S S S S* S* S*
4 S S S S S S S S S S S* S* S*
4 12 S S S S S S S S S S* S* S* S*
5 S S S S S S S S S S S* S* S*
5 12 S S S S S S S S S S S* S* S*
6 S S S S S S S S S S S* S* S*
6 12 S S S S S S S S S S* S* S*
7 S S S S S S S S S S* S* S*
7 12 S S S S S S S S S S* S* S*
8 S S S S S S S S S S* S* S*
9 S* S* S*
10 S* S* S*
11 S* S* S*
12 S* S* S*

Grade 2 Steel

Grade 2 Steel

HEX HEAD CAP SCREWS

Grade 2 steel. Plain or plated. National coarse Thread

DIAMETER THREAD
LENGTH 14-20 516-18 38-16 716-14 12-13 58-11 34-10 78-9 1-8 1 18-7 1 14-7 1 12-6
38 S
12 S S S
58 S S S
34 S S S S S
78 S S S S S
1 S S S S S S S
1 14 S S S S S S S
1 12 S S S S S S S S
1 34 S S S S S S S S S
2 S S S S S S S S S
2 14 S S S S S S S S S
2 12 S S S S S S S S S
2 34 S S S S S S S S S
3 S S S S S S S S S S* S* S*
3 14 S S S S S S S S S
3 12 S S S S S S S S S S* S* S*
3 34 S S S S S S S S S
4 S S S S S S S S S S* S* S*
4 12 S S S S S S S S S S* S* S*
5 S S S S S S S S S S* S* S*
5 12 S S S S S S S S S S* S* S*
6 S S S S S S S S S S* S* S*
6 12 S S S S S S S S S* S* S*
7 S S S S S S S S S S* S* S*
7 12 S S S S S S S S S* S* S*
8 S S S S S S S S S S* S* S*

Hex Hd Cap Screw

Hex Hd Cap Screw


Flat washer facing under the head that meet specific tolerances as described under ASME B18.2.1-1996.

They will usually be manufactured by a cold-heading process (large runs of standard sizes) or turned CNC operation.

A radius under the head at the shank.

Body diameter of plus nothing, minus .011″ for an 1-1/4″ diameter fastener.

Some common fastener specifications unless otherwise specified: ASTM A449 and SAE J429 Grade 2, 5, and 8