Inch

Metric

1"

1 1/8"

1 1/4"

1 1/2"

1 3/4"

2"

2 1/4"

2 19/64"

2 1/2"

2 3/4"

3"

3 3/8"

3 3/4"

4"

4 1/2"

1/2 ft.

6 1/2"

1 ft.

13"

2 ft.

3 ft.

4 ft.

6 ft.

12 ft.

20 ft.

32 ft.

50 ft.

51 ft.

81 ft.

127 ft.

129 ft.

205 ft.

320 ft.

515 ft.

1"

1 1/8"

1 1/4"

1 3/8"

1 1/2"

1 5/8"

1 3/4"

1 7/8"

2"

2 1/8"

2 1/4"

2 3/8"

2 1/2"

2 3/4"

3"

3 1/4"

3 1/2"

3 3/4"

4"

4 1/2"

5"

5 1/2"

6"

6 1/2"

7"

8"

10"

1"

1 1/8"

1 1/4"

1 3/8"

1 1/2"

1 5/8"

1 3/4"

1 7/8"

2"

2 1/4"

2 1/2"

3"

3 1/2"

4"

4 1/2"

5"

5 1/2"

6"

8"

ASTM Standard

California AB1953

DIN 103

Fed. Spec. QQ-C-390 G3

U.S. Congressional Act

Brinell 65

Brinell 69

Brinell 70

Brinell 126

Brinell 150

Rockwell B25

Rockwell B35

Rockwell B65

Rockwell B70

Rockwell B75

Rockwell B85

Rockwell B90

Rockwell B95

Not Rated

Compliant

Not Compliant

Compliant

Compliant with Exemptions

Not Compliant

Exempt

Oversized

Standard

Tight

EAR99

Less than 10,000 psi

10,000 psi to 19,999 psi

20,000 psi to 99,999 psi

Not Rated

2 mm

3 mm

4 mm

5 mm

7 mm

Soft

Medium

Not Rated

0.188"

0.313"

0.438"

0.688"

1"

1 1/4"

1 1/2"

1 3/4"

Material Certificate with Traceable Lot Number

Cast

Cold Worked

Pressed

Acme

Metric Trapezoidal

Stub Acme

UN

UNC

UNF

UNS