This is the 4-40x1" Socket Head Bolt & Blind Nut Set from Du-Bro.

Features

High strength steel construction.
High round cap head screws/bolts with a hexagon socket drive insert.
Plain Silver 4-40 blind nuts.
Plain Silver flat washers (1/8" ID).
Plain Silver slotted lock washers (1/8" ID).
Plain Black allen wrench.

Includes

(4) Bolts
(4) Flat Washers
(4) Lock Washers
(4) Blind Nuts
(1) Allen Wrench

Specifications

Thread Size: 4-40
Allen Wrench Size: 3/32"
Screw/Bolt Length: 1"