Hex Socket Set Screws On National Bolt & Nut Corp.

National Bolt & Nut's premium line of hex socket set screws are most regularly used to secure one object against another object, and are ideal for applications involving the fastening of knobs, gears, collars and other devices onto shafts. Designed for better industrial safety, our hex socket set screws are fully threaded and do not possess a head that protrudes past the major diameter of the screw thread. Our premium line of hex socket set screws is commonly constructed from hardened steel.
Other materials and finishes available. For further information, call or send an information request.

Item #	Thread Size	Length	Thread Length	Finish	Thread Style
pn-12128	N/A 1/4-20	N/A 5/16 in	N/A 3/4 in	N/A Plain	N/A Coarse Thread
pn-12129	N/A 1/4-20	N/A 3/8 in	N/A 3/4 in	N/A Plain	N/A Coarse Thread
pn-12130	N/A 1/4-20	N/A 1/2 in	N/A 3/4 in	N/A Plain	N/A Coarse Thread
pn-12131	N/A 1/4-20	N/A 3/4 in	N/A 3/4 in	N/A Plain	N/A Coarse Thread
pn-12132	N/A 1/4-20	N/A 1 in	N/A 3/4 in	N/A Plain	N/A Coarse Thread
pn-12133	N/A 3/8-16	N/A 3/8 in	N/A 1 in	N/A Plain	N/A Coarse Thread
pn-12134	N/A 3/8-16	N/A 5/8 in	N/A 1 in	N/A Plain	N/A Coarse Thread

Item #

Thread Size

Length

Thread Length

Finish

Thread Style

pn-12128

N/A 1/4-20

N/A 5/16 in

N/A 3/4 in

N/A Plain

N/A Coarse Thread

pn-12129

N/A 1/4-20

N/A 3/8 in

N/A 3/4 in

N/A Plain

N/A Coarse Thread

pn-12130

N/A 1/4-20

N/A 1/2 in

N/A 3/4 in

N/A Plain

N/A Coarse Thread

pn-12131

N/A 1/4-20

N/A 3/4 in

N/A Plain

N/A Coarse Thread

pn-12132

N/A 1/4-20

N/A 1 in

N/A 3/4 in

N/A Plain

N/A Coarse Thread

pn-12133

N/A 3/8-16

N/A 3/8 in

N/A 1 in

N/A Plain

N/A Coarse Thread

pn-12134

N/A 3/8-16

N/A 5/8 in

N/A 1 in

N/A Plain

N/A Coarse Thread