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25 black oxide alloy steel socket head cap screws in a pack

Kerr Lakeside

Kerr Lakeside 75C250KCS 3/4-10 x 2.5 in. Socket Head Cap Screw Alloy Steel Black Oxide 25 Pack

SKU CH-FHNP-FH2H5

Pack of 25 alloy-steel socket head cap screws, 3/4-10 UNC x 2.5 in., black oxide finish, RC 38-43 hardness, 170,000 lb tensile strength

  • Product typeSocket
  • Alloy steel delivers 180000 psi minimum tensile strength
  • Black oxide finish resists corrosion on every fastener
  • 25-piece pack supplies enough hardware for large jobs
  • Hex drive design allows secure installation with standard tools
  • Meets ASTM A574 and ANSI B18.3 standards

Socket Head Cap Screws for Heavy-Duty Assembly

This 25-piece pack supplies 3/4-10 UNC coarse-thread socket head cap screws made from alloy steel with a black oxide finish. Each fastener measures 2.5 inches long with full thread engagement and a hex drive. The screws meet ASTM A574 and ANSI B18.3 standards and are RoHS compliant for regulated environments.

High-Strength Fasteners Requiring Hex Tooling

The alloy steel construction delivers a minimum tensile strength of 180000 psi and a Rockwell hardness of RC 38-43. Installation requires a hex key or bit matching the socket drive; no specialised power-tool interface is specified. The black oxide coating provides mild corrosion resistance and reduces light reflection during assembly.

Suited for Structural and Maintenance Tasks

Builders needing right-hand UNC coarse threads at this diameter and length will find the pack convenient. The 10.51 lb pack weight reflects the substantial alloy steel volume. Buyers who require fine-thread pitch, stainless corrosion resistance, or a different drive style should look elsewhere.

How it compares

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

Price $55.99
Pricier than about 70% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameKerr Lakeside
Product typeSocket

Questions about this item

What is the tensile strength limit of the 3/4-10 x 2.5 in. socket head cap screw under sustained load?

The minimum tensile strength is 180000 and the tested tensile strength is 170000 lbs. for each screw.

How much heat or noise do the 25 alloy steel screws generate during all-day use?

As passive fasteners, the screws produce no heat or noise once installed and torqued to specification.

Which hex drive size must I already own to install the 3/4-10 x 2.5 in. cap screws?

A 5/8 in. hex key or bit is required to drive the socket head on these 3/4 in. coarse-thread screws.

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