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Box of 100 black oxide alloy steel socket head cap screws

Kerr Lakeside

Kerr Lakeside 31C200KCS .31-18 x 2 in. Socket Head Cap Screw Alloy Steel Black Oxide 100 Pieces

SKU CH-CQWX-DDB28

Pack of 100 alloy steel socket head cap screws with black oxide finish, 5/16"-18 thread by 2 inch length

  • Product typeSocket
  • Alloy steel construction delivers high tensile strength
  • Black oxide finish resists corrosion in demanding environments
  • Socket head design allows installation in confined spaces
  • 5/16"-18 thread pitch fits standard coarse-thread applications
  • Pack of 100 pieces supports volume fastening tasks

Industrial Fastener Pack

This pack supplies one hundred alloy-steel socket head cap screws finished in black oxide. Each fastener uses a 5/16"-18 thread and measures two inches in length. The components are designed for machine assembly and maintenance tasks that demand high tensile strength.

Replaces Worn Hardware

Use these screws to replace damaged or corroded fasteners in existing tapped holes or fixtures. The uniform alloy-steel construction restores clamping force when original hardware has stretched or stripped. The jump is worth it whenever a secure, repeatable joint is critical to equipment uptime.

Suits Maintenance And Production

Technicians and engineers who need a ready supply of standard socket head capscrews will find the quantity convenient. Buyers who require a different thread pitch, length, drive style or corrosion-resistant material should look at other fastener options.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $27.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameKerr Lakeside
Product typeSocket

Questions about this item

What drive size fits the 5/16"-18 socket head cap screw?

Use a 3/16 in. hex key to drive the socket head on each screw.

Which step is most often missed when installing these alloy steel socket head cap screws?

Clean the threads and apply the correct torque for a 5/16"-18 fastener to avoid over-tightening.

When should the black oxide finish on these 100 socket head cap screws be inspected or replaced?

Inspect for rust or coating wear after exposure to moisture; replace any screw that shows corrosion or thread damage.

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