3/8-16 x 1 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (100)

1/4-28 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (50)

3/8-16 x 3 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (50)

Typical hardness is HRB 68 - HRC 32

3/8-24 x 4 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (50)

1-8 x 5 1/2 A325 Type 1 Heavy Hex Bolt Plain (30) 1/2-13 Socket Cap Screws Zinc Plated 3/8-16 x 1 1/2 Grade1 8 x 5 1 2 A325 Type 1 Heavy Hex Bolt Plain (30) . Heavy Hex A325 structural bolts are designed for steel to steel structural connections. For this reason, they are typically very short. The A325 and A490 specifications are not intended for general applications, including anchor bolts. Free certs available on request.