Hex Cap Screws Hot Dipped Galvanized 307A Grade A 1/4"-20

1/4"-20 Hot Dip Galvanized Hex Cap Screws

Diameter - Thread Pitch: 1/4" - 20


  • 1/4"-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
  • Hot dipped galvanized finish offers corrosion resistance due to the molten zinc bath finishing process
  • Creates a bonded alloy coating

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.

A Hex Bolt is measured as: Diameter x Thread Pitch x Length from Under Head
FT: Fully Threaded
PT: Partially Threaded


**1/4"-20 Hex Cap Screws listed as PT, usually have a threaded portion of about 3/4".
However, this can vary slightly from manufacturer to manufacturer.

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Product Specifications
Across Flats (Width)
7/16" (Max 0.437 - Min 0.428)
Corrosion Resistant
Yes
Drive Style
External Hex
Finish
Hot Dip Galvanized
Grade
307A Grade A
Head Height
Basic 5/32", Max 0.163 - Min 0.150
Head Style
Hex
Material
Steel
Product Type
Hex Cap Screws
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
Width Across Corners
Max 0.505 - Min 0.488
Wrench Size
7/16"