Section B

Hex Head Cap Screws Vis à tête hexagonale

Inch Pouce

FINE THREAD (U.N.F.) (S.A.E.) DIA. 1/4" 5/16" 3/8"

C1020 LOW CARBON STEEL HEAT TREATED STRESS RELIEVED PLAIN FINISH

7/16"

1/2"

THD. LG. ▼

28

24

24

20

20

ORDER BY SPAENAUR NUMBERS LISTED BELOW

B

B-3

B-22 B-23 B-25 B-26 B-27 S-18 S-19 S-42

B-28

1

1-1/4 1-1/2 1-3/4 2-1/4 2-1/2 3-1/4 3-1/2 2 3

B-10

B-30 B-31 B-32 S-46

B-12

B-20

Length shown is under head to end in inches.

S-47 S-21 S-22

S-15

4

MINIMUM THREAD LENGTH Up to 6" long: (2D + 1/4) Twice diameter plus 1/4 inch. Over 6" long: (2D + 1/2) Twice diameter plus 1/2 inch.

CS-12

4-1/2

CS-1

5

Contact Sales Desk For Package Quantities

FINE THREAD UNIFIED STANDARD CLASS 2A FIT SAE GRADE 2

DIA. THD. LG. ▼

5/8"

3/4"

7/8"

1" 14

18

16

14

ORDER BY SPAENAUR NUMBERS LISTED BELOW

B-37 S-28 S-29

B-39

2

2-1/4

S-33

CS-7

3

S-31 325-A22-1M

3-1/2

CS-4

4

S-34 S-72 S-74

4-1/2

10 11

S-73

Contact Sales Desk For Package Quantities

Material Spec. ASTM A 307

MINIMUM TENSILE STRENGTH (PSI) Up to 1/2" dia. inclusive - 69,000 PSI Over 1/2" to 3/4" inclusive - 64,000 PSI Over 3/4" to 1-1/2" inclusive 55,000 PSI

CATALOG 14

The standard grade for all general applications where extreme strength is not required.

ASME B18.2.1

B136

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