1/4"-20 Star Drive Flat Head Type F Thread Cutting Floorboard Screws Black Phosphate & Oil Finish

Star Drive 6 Lobe Flat Head Thread Cutting Screws | Black Phosphate + Oil Finish - Type F

Diameter - Thread Pitch: 1/4"-20


1/4"-20 Thread Cutting screws feature a thread cutting tip which makes threads in existing or pre-drilled holes.

Drill Bit Sizes for Thread Cutting Screws

  • Provide a tight fit
  • High resistances to torque, shear, and tension when applied
  • Feature a machine screw style thread
  • Blunt tapered point with multi-cutting edges and chip cavities
  • Star drive style to designed to reduce the chance of slip out during proper installation
  • Minimizes the chance to stripping

Sizes Listed As:
Diameter - Thread Pitch x Length from Top of Head

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Product Specifications
Color
Black
Corrosion Resistant
Yes
Drive Style
Star
Finish
Black Phosphate & Oil
Grade
C1022
Head Diameter
Max 0.507 - Min 0.452
Head Style
Flat
Material
Steel
Point Type
F
Product Type
Thread Cutting (Floorboard) Screws
System of Measurement (Unit)
Inch
Thread Diameter
1/4"
Thread Diameter Major
0.25
Thread Diameter Minor
0.2408
Thread Direction
Right Hand
Thread Pitch (Count)
20 Per Inch
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Torx Drive
T30