Prime Line Carriage Bolts, -18 X 2- A307 Grade A Zc Stl, Package Of 50. Size: 5/16 Inch-18 X 2-1/2 Inch. Features A Smooth Rounded Head As Opposed To A Standard Hex Head. Square Shoulder Allows For Nut To Be Tightened Or Loosened. Often Used In Cases Where A Protruding Bolt Head Could Cause Injury. Nuts And Washers Not Included, Ensure Washers And Nuts Are Same Diameter. Thread Type: Coarse, Thread Class: Unc-2a, Point Style: Blunt. Specification(S) Met: Asme B18.5 & Astm A307a.
- Size: 5/16 Inch-18 X 2-1/2 Inch
- Features A Smooth Rounded Head As Opposed To A Standard Hex Head
- Square Shoulder Allows For Nut To Be Tightened Or Loosened
- Often Used In Cases Where A Protruding Bolt Head Could Cause Injury
