This is the 4-40x1" Socket Head Bolt Sets with Lock Nuts from Du-Bro.|
High strength steel construction.
High round cap head screws/bolts with a hexagon socket drive insert.
Plain Silver flat washers (1/8" ID).
Plain Silver 4-40 lock nuts with Black nylon inserts.
(4) Flat Washers
(4) Lock Nuts
Thread Size: 4-40
Screw/Bolt Length: 1"