These CRL Stainless Nylock Hex Nuts are available in both Stainless and Zinc finishes, and may be used without Lock Washers for attachment to Allen Screws or Threaded Rod for 1-1/4" (32 mm) diameter Standoffs.
5/16"-18 Thread Size for Use with 1-1/4" Standoff Threaded Rods or Allen Screws | Stainless Finish
