5/16"-18 Socket Head Screws 18-8 Stainless Steel

5/16"-18 Stainless Steel Socket Cap Screws

Screw Diameter - Thread Pitch: 5/16"-18


5/16"-18 Stainless steel Knurled Head socket cap screws are bolts or machine screws with a Hex or Allen drive style.

  • Driven manually, or with a Hex Allen Bit or Key
  • Cylindrical head
  • 18-8 Stainless Steel offer the Fastener Industry standard for corrosion and rust resistance
  • Recommended for use in exterior applications, or those that are exposed to fresh water moisture
The term socket head cap screw typically refers to a 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

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Product Specifications
Body Diameter
5/16" (Max 0.3113 - Min 0.3026)
Chamfer on Radius
Max 0.008
Color
Silver
Corrosion Resistant
Yes
Diameter
5/16"
Drive Style
Hex Socket
Head Diameter
Max 0.469 - Min 0.457
Head Height Max
0.312
Head Side Height
Min 0.281
Head Style
Cap
Hex Drive
1/4"
Material
Stainless Steel 18-8
Overall Head Height
Max 0.312 - Min 0.306
Product Type
Socket Cap Screws
Thread Direction
Right Hand
Thread Length Max
1-1/2" (Lengths over 1-1/2" will have a Shoulder / Partial Thread)
Thread Pitch (Count)
18
Thread Standard
UNC
Thread Type
Coarse
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
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