We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Pack of 25 black alloy steel socket head cap screws .75 - 10 x 2.75 in

Kerr Lakeside

Kerr Lakeside 75C275KCS Socket Head Cap Screw .75 - 10 x 2.75 in. Alloy Steel Black Oxide Pack 25 Pieces

SKU CH-6NNQ-RT3XE

Fully threaded alloy steel socket head cap screw with black oxide finish, 3/4‑10 UNC thread and 2.75 in length, pack of 25

  • TypeSocket
  • MaterialHAWA
  • Alloy steel construction delivers high tensile strength
  • Black oxide finish resists corrosion in demanding environments
  • Fully threaded 3/4 in.-10 UNC shank ensures full grip length
  • 5/8 in. hex socket drive allows high torque installation
  • Pack of 25 pieces supports volume fastening needs

Kerr Lakeside Socket Head Cap Screws

The Kerr Lakeside 75C275KCS is a pack of 25 alloy steel socket head cap screws designed for industrial fastening. Each screw features a 3/4-10 UNC coarse thread and a 2.75 inch length with a black oxide finish. The hex socket drive accepts a 5/8 inch key for installation.

Fully Threaded Design and Black Oxide Finish

The fully threaded shank provides consistent grip along the entire 2.75 inch length for secure clamping. Black oxide coating adds mild corrosion resistance and reduces light reflection. The alloy steel construction delivers high tensile strength for demanding mechanical assemblies.

Suited for Maintenance and Assembly Tasks

This pack suits technicians and mechanics who need a ready supply of 3/4 inch diameter fasteners for equipment repair. Buyers requiring fine-thread variants, stainless steel grades, or different head styles should look at alternative fastener selections.

Highlights

  • Alloy steel construction delivers high tensile strength
  • Black oxide finish resists corrosion in demanding environments
  • Fully threaded 3/4 in.-10 UNC shank ensures full grip length
  • 5/8 in. hex socket drive allows high torque installation
  • Pack of 25 pieces supports volume fastening needs

Specifications

BrandKerr Lakeside
TypeSocket
MaterialHAWA

Questions about this item

Will the black oxide finish on these 3/4-10 alloy steel screws need reapplication after heavy use?

The black oxide coating provides mild corrosion resistance and reduces glare; it is not a thick plating, so abrasion in high-friction joints may expose bare alloy steel over time.

What stops me from torquing these 5/8 in hex-drive cap screws beyond their yield point?

The alloy steel material grade determines the proof load; exceeding the recommended torque for a 3/4-10 UNC thread risks permanent stretch or head separation.

Do the fully threaded 2.75 in shanks generate noticeable heat during repeated pneumatic fastening?

Fastening cycles are too brief for measurable heat buildup in the screws themselves; any warmth comes from the driver motor, not the fastener.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.