5/16-18 x 2 1/2" (FT) Floorboard Thread Cutting Screws (Type F), Coarse, Flat Head, 6-Lobe (T-40 Torx Drive), Black Phosphate

Part Number #688138

South Coast Fasteners stocks the 5/16-18 x 2 1/2" (FT) Floorboard Thread Cutting Screws (Type F), Coarse, Flat Head, 6-Lobe (T-40 Torx Drive), Black Phosphate for fast 3-5 day shipping. It measures 5/16" diameter, 2 1/2" (FT) length, coarse thread, Steel with a Black Phosphate finish. Built for fastening thin metal without a pilot hole. These self-tapping screws are part of our Self-Tapping Screws line, stocked across industries such as Electrical, HVAC, and Construction.

Please contact us if you need assistance in selecting the right product or placing an order.

Package Quantity
Package Quantity:  0
Total Qty: 
Sub-Total: 
  • 5/16-18 x 2 1/2" (FT) Floorboard Thread Cutting Screws (Type F), Coarse, Flat Head, 6-Lobe (T-40 Torx Drive), Black Phosphate
Click image to enlarge

688138 Specifications

  • Diameter: 5/16"
  • Thread Pitch: 18
  • Length: 2 1/2" (FT)
  • Thread: Coarse
  • Material: Steel
  • Finish: Black Phosphate