Products

Hex Coupling Nuts

We are leading Manufacturers & Suppliers of Hex couplers in Nickel 200/201, Monel 400, Inconel 600/625, Incoloy 800 ,800H & 800HT, Hastelloy C22/Hastelloy C276, Alloy 904 L/Alloy 20, Ti Grade 1/2/3/4/5/7. These are used to connect two pieces of threaded material. Hex and heavy hex couplers are threaded right hand. If a right hand-left hand coupler is needed, consider using a sleeve nut. 
See our nut compatibility chart to determine the compatible hex coupler for a specific grade of bolt. Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener, galvanized couplers are tapped oversize to compensate for the corrosion resistant coating on the bolts.

Stock

  • Diameters: 1/2" - 1"
  • Origin: Domestic and import
  • Finish: Black and hot-dip galvanized
  • Grades: A563 (grades A and DH)

Available

  • Diameters: 1/2" - 6"
  • Origin: Domestic and import
  • Finish: Black and hot-dip galvanized
  • Grades: A563 (grades A, C, and DH), A194 grade 2H

Dimensions:

Finished Hex Coupler Pattern

Dimensions per IFI-128 2000 and ASME B18.2.2 page D-22

Heavy Hex Coupler Pattern

Nominal Size