5/16″-18 x 1-1/4″ Grade 8 Serrated Hex Flange Machine Bolts, Trivalent RoHS (1,100/Pkg.)

Description

Gr. 8 Flange Screw – Trim Hd

IFI 111 (Full 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