1/4-20 Button Socket Head Screws Black Oxide 18-8 Stainless Steel

1/4"-20 Black Oxide Stainless Steel Button Head Socket Cap Screws

Screw Diameter - Thread Pitch: 1/4"-20


1/4"-20 Button Head Socket Cap Screws are bolts or machine screws with a Hex or Allen drive style.

  • Commonly referred to as allen bolts, button heads, or socket head screws
  • Clean and unstamped domed head with a flat bottom that protrudes above the installation surface
  • Cylindrical head and hexagonal drive style
  • Head diameter is nominally 1.5 times or more that of the screw shank (major) diameter
  • Chemically treated to add a mild extra layer of corrosion and abrasion resistance
  • Sleek black finished look


Black Oxide Stainless Steel Fasteners are commonly used in industries where the durability of Stainless Steel is required, but a smooth black look is desired. These industries include firearms, automotive (car and motorcycle), camping gear, archery, knife builds and product manufacturing.

Select Products Below
See Product Specifications
Size:
Qty
Size
Select Package Quantity
SubTotal
Loading ...
Product Specifications
ANSI
ANSI B1.1
Class
2A
Color
Black
Corrosion Resistant
Yes
Drive Style
Internal Hex (Allen)
Finish
Black Oxide
Grade
18-8
Head Diameter
Max 0.437 - Min 0.419
Head Height
Max 0.132 - Min 0.122
Head Style
Button
Hex Drive
5/32"
Material
Stainless Steel
Product Type
Button Head Socket Cap Screws
System of Measurement (Unit)
Inch
Thread Diameter
(1/4") Max 0.2489 - Min 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