Coupling Nuts

As of: Monday, June 30, 2025

Coupling nuts are long nuts used to connect pieces of threaded rod or other male threaded fasteners.

Part#	Thread Size	Length	Flat	Safe Load*
14638	1/4-20 UNC	1.75 in	0.44 in	500 lb
14650	3/8-16 UNC	1.75 in	0.62 in	1,500 lb
14663	1/2-13 UNC	1.75 in	0.87 in	3,000 lb
14681	5/8-11 UNC	2.12 in	1.06 in	7,500 lb
14691	3/4-10 UNC	2.25 in	1.25 in	10,000 lb
*Do not exceed the safe load.

Part #	Description

14638	Nut,CPLG 1/4-20NCx1-3/4 7/16 Heavy HEX Width Across Flats=7/16 Length=1-3/4 Steel Zinc Plated Minimum Tensile Strength=60000 Psi Safe Load=500 Lbs
14650	Nut,CPLG 3/8-16NCx1-3/4 5/8 Heavy HEX Width Across Flats=5/8 Length=1-3/4 Steel Zinc Plated Minimum Tensile Strength=60000 Psi Safe Load=1500 Lbs
14663	Nut,CPLG 1/2-13NCx1-3/4 7/8 Heavy HEX Width Across Flats=7/8 Length=1-3/4 Steel Zinc Plated Minimum Tensile Strength=60000 Psi Safe Load=3000 Lbs
14681	Nut,CPLG 5/8-11NCx2-1/8. 1-1/16 Heavy HEX Width Across Flats=1-1/16 Length=2-1/8 Steel Zinc Plated Minimum Tensile Strength=60000 Psi Safe Load=7500 Lbs
14691	Nut,CPLG 3/4-10NCx2-1/4 1-1/4 Heavy HEX Width Across Flats=1-1/4 Length=2-1/4 Steel Zinc Plated Minimum Tensile Strength=60000 Psi Safe Load=10000 Lbs