1/4"-20 Black Oxide Stainless Steel Socket Cap Screws
Screw Diameter - Thread Pitch: 1/4"-20
1/4"-20 Black Oxide Knurled Head Socket cap screws are machine screws with an Allen drive style.
- Externally grooved cap head
- Can be driven manually, or with a Hex Allen Bit or Key
- Cylindrical head and hexagonal drive style
- Sleek black finished look
- Type of threaded fastener whose head diameter is nominally 1.5 times or more that of the screw shank (major) diameter
Sizes Listed As:
Diameter - Thread Pitch x Length from Underside of Head
FT = Full Thread
PT = Partial Thread
See Product Specifications
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Product Specifications
Additional Sizing Info
Lengths over 1" will have a Shoulder / Partial Thread
Body Diameter
1/4" (Max 0.2500 - Min 0.2435)
Chamfer on Radius
Max 0.008
Color
Black
Corrosion Resistant
Yes
Drive Style
Internal Hex (Allen)
Finish
Black Oxide
Grade
18-8
Head Diameter
Max 0.375 - Min 0.365
Head Style
Socket Cap
Hex Drive
3/16"
Knurled
Yes
Material
Stainless Steel
Overall Head Height
Max 0.250 - Min 0.244
Product Type
Socket Cap Screw
System of Measurement (Unit)
Inch
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
