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Wulankd 100 Pack Type F Star Drive Machine Screws(Trailer Screws), 5/16'-18 x 2-1/2 Floorboard Thread Cutting Screws Trailer Deck Screws, Black Phosphate, T-40 Star Drive Alloy Steel

4.8 (3) Write Review
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$13.99

$ 6 .99 $6.99

In Stock

About this item

  • DESIGHED for use in floorboard trailer deck, the star drive provides better grip and less slippage compared to other drive types.
  • FLOORBOARD SCREWS: The flat head allows for a flush installation, good choice to make a smooth surface.
  • MATERIAL: Carbon steel (RC 46 Minimum Case Hardness).
  • BLACK PHOSPHATE & OIL COATING: A chemically produced coating that leaves the steel surface with a matte black finish. Provides corrosion Resistance.
  • Package Includes 100 Screws.


Product Description

Excellent Materials

MATERIAL: Carbon steel (RC 46 Minimum Case Hardness)

BLACK PHOSPHATE & OIL COATING: A chemically produced coating that leaves the steel surface with a matte black finish. Provides corrosion Resistance.

Size

Thread specifications: 5/16"-18, Lenth: 2-1/2".

Modern Desingn

DESIGHED for use in floorboard trailer deck, the star drive provides better grip and less slippage compared to other drive types.


Michael Hawkins
August 14, 2025
Excellent Quality, ran with torx bit, predrill 19/64 into 1/4” steel. Excellent- ran 200 of these through .80 cca treated 2x8’s on a 30ft gooseneck- two , 1.25” off edges at 4’-5’ centers- predrilled with 1/4” then ran a final 19/64 thriugh it..makita impact sank them with no issue and great control.
chris anderson
June 9, 2025
These screws are the perfect size and with the self tapping head only a small pilot hole is needed. Replacing the entire deck so the 100 count quantity is perfect for the job.
Customer in GA
January 29, 2025
No issues mounting a plywood sheet floor. Haven't seen phosphated fasteners before, but always made a good corrosion-resistant firearms finish. No signs of surface rust yet despite a very humid environment where I'm at. Did a good job, reasonably priced.