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  • Hex washer head self-drilling screws (HWH SDS) Tek screws
  • Used for metal-to-metal fastening in a large variety of construction and fabrication applications
  • Made of #1018 grade carbon steel
  • Feature a silver zinc finish
  • 40-hour rating in a salt spray resistance test
  • The tips are self-drilling which eliminates the need for a pre-drilled pilot hole
  • The #8’s use a ¼” nutsetter
  • The #10’s and #12’s use a 5/16” nutsetter
  • The #14’s use a 3/8” nutsetter



Product ID:

(attached photo)

HWH Self Drilling Screw

SKU: 2921
  • Specifications

    #8 Diameter: Used in light gauge sheet metal applications. They are very common in heating, ventilating, air conditioning, and ductwork assembly.

    #10 Diameter: Used by sheet metal and H.V.A.C. contractors and fabricators. Also used to attach steel siding and steel gutters.

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