5/16"-18 Hex Cap Screws 18-8 Stainless Steel

5/16"-18 Stainless Steel Hex Cap Screws

Diameter - Thread Pitch: 5/16" - 18


  • 5/16"-18
  • Hexagon head designed to be driven by a wrench or socket
  • Called hex cap bolts or hex cap screws
  • 18-8 Stainless steel hex cap screws offer protection from weather and corrosive environments
  • Rust resistant in fresh water environments
  • For salt water environments use the 316 stainless steel version

Diameter x Thread Pitch x Length from Under Head
FT: Fully Threaded
PT: Partially Threaded

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Product Specifications
Across Flats (Width)
1/2", Max 0.50 - Min 0.489
ASME
B18.2.1
Body Diameter
5/16" (Max 0.3113 - Min 0.3026)
Color
Silver
Corrosion Resistant
Yes
Diameter
5/16"
Drive Style
External Hex
Head Height
Basic 13/16", Max 0.211 - Min 0.195
Head Height Max
0.211
Head Style
Hex
Material
Stainless Steel 18-8
Product Type
Hex Cap Screws
Standards Met
ASME B18.2.1
Thread Direction
Right Hand
Thread Length Max
5/16" Diameter Hex Cap Screws over 1-1/4" in length 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
Width Across Corners
0.577
Wrench Size
1/2"
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