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1/4'-20 Flat Head T30 Star Drive Thread Cutting Trailer Floorboard Screws - Qty 200 (1/4'-20 x 1)

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$20.79

$ 10 .99 $10.99

In Stock

About this item

  • Black Phosphate and Oil Finish for Corrosion Resistance
  • Star Drive to prevent stripping and ease installation
  • Blunt tapered point with multi-cutting edges and chip cavities
  • Type F Thread Cutting Screws
  • T30 Drive



Product Description

Star Drive Flat Head Type F Thread Cutting Floorboard Screws Black Phosphate & Oil Finish

  • High resistances to torque, shear, and tension when applied
  • Features a machine screw style thread with a Type F thread cutting point
  • Blunt tapered point with multi-cutting edges and chip cavities for heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic
  • Star drive style to designed to reduce the chance of slip out and stripping during installation
  • A thread cutting screw cuts its own threads into an existing hole

Thread Cutting screws feature a thread cutting tip which makes threads in existing or pre-drilled holes. They provide a tight fit and high resistances to torque, shear, and tension when applied. Generally used for making threads in metal and wood, thread cutting screws do not generate the same stress as thread forming screws.

Thread forming screws "push" the material they have been applied to so as to reduce the chipping on the applied material, though this comes at the cost of putting more stress on the thread forming fastener. Thread cutting screws cut into and remove chips from the applied material as the fastener creates the thread, providing a more secure fit.

Product Specifications:

  • Fastener Type: Thread Cutting Screw
  • Material: C1022 Steel
  • Finish: Black Phosphate & Oil
  • Head Style: Flat
  • Countersink: 82 Degrees
  • Head Diameter: Max 0.507 - Min 0.452
  • Drive Style: Torx / Star
  • Drive Size: T-30
  • Thread Size: 1/4"-20
  • Thread Diameter: 1/4" (0.250 Major, 0.2408 Minor)
  • Thread Pitch: 20 per Inch
  • Thread Type: Coarse (UNC)
  • Point Type: F

Torx Star Drive Flat Head Type F Thread Cutting Screws

trailer screws

Black Phosphate & Oil Finish

Torx Star Drive Thread Cutting Trailer Floorboard Screws in this selection are made of C1022 Steel with a black phosphate and oil finish for corrosion resistance and durability, making these screws designed to last.

Torx Flat Head

Star Drive Flat Head

Thread cutting screws in this selection feature a countersunk flat head that runs flush with the installation surface when properly installed. The Torx 6 Lobe drive style (commonly referred to as a "star" drive") features six points of contact, allowing for a higher torque installation and resists cam out and screw stripping.

torx thread cutting screws

Type F Point

Thread cutting screws in this selection feature machine screw threads with a Type F thread cutting point to form its own threads in a pre-existing hole. The Type F point is blunt and tapered, and features multi cutting edges and chip cavities, making it suitable for use with heavy gauge sheet metal, aluminum, zinc and lead die castings, cast iron, brass and plastic.


Sir Don
Reviewed in the United States on June 11, 2024
Easy to fasten, like the non strip head
TIMOTHY
Reviewed in the United States on August 13, 2023
used for trailer floor, thru 1/4 channel and 3/16 angle iron, used 144 screws, not one broke, used 13/64 drill bit as mentioned buy other user. worked great..
Rick
Reviewed in the United States on February 18, 2022
Worked well with a pilot hole size 13/64.
Bob Wright
Reviewed in the United States on May 26, 2019
Product did exactly what I needed it for. Pulled decking down tight to 1/8" steel angle, nothing stripped or broke.
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