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Lock Washers & Dome Caps

Self Locking Washers and Dome Caps are used to hold insulation materials onto both Perforated Pins and Self Sticking Pins.  Self Locking washers come in a variety of shapes and sizes (also painted white or black).  Once the washer is installed the pin head can be bent or cut off with end nippersDome Caps are both lock washers and protective caps that conceal the sharp end of a pin.  Dome caps can be used as a locking washer on both Perforated Base and Self-Stick Insulation Hanger Pins.  The aluminum dome cap contains a stainless steel lock washer on the inside and creates a safe and an attractive look if left exposed.  Dome caps can come in silver or painted black or white to match insulation facings or fabrics. 

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  • Dome Caps in Glossy White Finish

    Gemco / Midwest Fasteners

    Aluminum Dome Cap Washers

    Aluminum Dome Caps are both lock washers and protective caps that conceal the sharp end of a pin.&nb

    Price: $20.99

  • Gemco / Midwest Fasteners

    Self Locking Washers

    1-1/8" x 1-1/4" galvanized locking washers are used to secure insulation material in place on Self S

    Price: $20.50
  • 1-1/2" Diameter Round Self-Locking Washers for Perforated and Self-Stick Insulation Hanger Pins.

    Gemco / Midwest Fasteners

    1-1/2" Round Lock Washers

    Round Self-Locking Washers are used to secure board or batt insulation onto self-stick or perforated

    Price: $7.99
  • 1-1/2" x 1-1/2" Square Self-Locking Washers for 12 ga Perforated and Self-Sticking Insulation Hanger Pins.

    Gemco / Midwest Fasteners

    1-1/2" Square Lock Washers

    Square Self Locking Washers are used to secure insulation onto self-stick or perforated base pins.&n

    Price: $7.99