5/16"-18 x 3-1/2" Zinc Plated Steel Coarse Full Thread Hex Head Tap Bolts

Diameter: 5/16"
Length: 3-1/2"
Material: Steel
Finish: Zinc
Head Style: Hex (1/2" Wrench)
Thread Size: 18 (Coarse)
Style: Full Thread
Type: Tap Bolt

Box of 25.

A tap bolt is a bolt threaded all the way to the head.