7/16″-20 x 1-3/4″ Grade 8 Frame Bolt, Non-Indented, Non-Serrated, Black Phosphate & Oil (400/Bulk Pkg.)

Description

Gr. 8 Frame Bolt – Trim Hd

IFI 111 (FULLY Thread) (Non-Indented Head)

Material: Alloy Steel AISI 4135

Tensile Strength: Min 150,000 PSI

Core Hardness: HRC 33 ~ 39

Surface Hardness: HR30N MAX 58.6

Screw Threads: ANSI B1.1 UNC

Class of Threads: 8 ~ 3/4, 2A