Nominal nut size

in.Non-Zinc

coated NutsZinc coated

Nuts

hex 1/4 to 1-1/2 135 135

heavy hex 1/4 to 4 150 150

hex 1/4 to 1-1/2 150 150

heavy hex 1/4 to 4 175 175

hex 1/4 to 1-1/2 135 135

heavy hex 1/4 to 4 150 150

hex 1/4 to 1-1/2 150 150

heavy hex 1/4 to 4 175 175

hex 1/4 to 1-1/2 150 150

heavy hex 1/4 to 4 175 175

hex 1/4 to 1-1/2 135 135

heavy hex 1/4 to 4 150 150

hex 1/4 to 1-1/2 75 75

heavy hex 1/4 to 4 80 80

hex 1/4 to 1-1/2 75 75

heavy hex 1/4 to 4 80 80

ASTM A194 Mechanical Properties and Head Marking

8 126-300

8M 126-300

7 248-327

7M HRB159-235

2HM HRB159-235

2 HRB159-352

2H≦1-1/2: 248-327，﹥1-1/2 : 212-327

4 248-327

Grade Hardness

A194

Standard forNut

Dimensional styleof nut

Proof Load Stresskis

Head Marking