1/4"-20 Knurled Thumb Machine Screw Solid Brass

1/4"-20 Solid Brass Knurled Head Thumb Screws

Diameter - Thread Pitch: 1/4"-20


1/4"-20 Brass knurled head thumb screws in solid brass.

  • Knurled head intended to be driven by fingers
  • ASME Standards specific
  • Aesthetically pleasing and typically used for ornamental products
  • The more zinc in a screw the lighter it will tend to be
  • Brass is corrosive resistant but very soft material
  • Commonly used for:
    • Firearms
    • Weather Stripping
    • Pipes
NOTE: Color and sheen may vary

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Product Specifications
ANSI
B18.6.3
Color
Yellow
Corrosion Resistant
Yes
Drive Style
Thumb
Elongation
10% - 25%
Hardness
40-75 Rockwell B
Head Diameter
23/32" (.09375)
Head Style
Knurled
Knurled
Yes
Material
Solid Brass
Overall Head Height
1/2"
Product Type
Knurled Head Thumb Screws
System of Measurement (Unit)
Imperial
Thread Diameter
1/4"
Thread Diameter Major
0.2489
Thread Diameter Minor
0.2408
Thread Direction
Right Hand
Thread Pitch (Count)
20
Thread Standard
UNC
Thread Type
Coarse
Yield PSI
30,000 - 50,000
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