1/2-20 Hex Cap Screws 316 Stainless Steel

1/2"-20 | 316 Stainless Steel Hex Cap Screws

Diameter - Thread Pitch: 1/2" - 20


  • 1/2"-20
  • Hexagon head designed to be driven by a wrench or socket
  • Also called hex cap bolts, hex bolts, tap bolts or hex cap screws
  • 316 Stainless Steel Hex Cap Screws are suitable for saltwater, marine and hash environment installations
  • Commonly used for:
    • Boats
    • Docks
    • Piers
    • Other harsh environments

A hex cap screw in smaller sizes may not have a shoulder. When a hex cap screw is fully threaded it can also be referred to as a tap bolt.

Hex Bolts are measured as: Diameter x Thread Pitch x Length from Under Head
FT: Fully Threaded
PT: Partially Threaded


** 1/2"-20 Hex Cap Screws listed as PT, usually have a threaded portion of about 1-1/4".
However, this can vary slightly from manufacturer to manufacturer.

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Product Specifications
Across Flats (Width)
3/4" (Max 0.750 - Min 0.736)
Color
Silver
Corrosion Resistant
Yes
Diameter
1/2"
Drive Style
External Hex
Grade
316
Head Height Max
0.323
Head Style
Hex
Marine Grade
Yes
Material
Stainless Steel
Overall Head Height
Basic 5/16", Max 0.323 - Min 0.302
Product Type
Hex Cap Screws
System of Measurement (Unit)
Inch
Thread Direction
Right Hand
Thread Pitch (Count)
20 Per Inch
Thread Standard
UNF
Thread Type
Fine
Tolerance (IFI)
Actual measurements may vary slightly +/- depending on production run within IFI Tolerances
Width Across Corners
Max 0.866 - Min 0.840
Wrench Size
3/4"