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One hundred black oxide socket head cap screws in a pile

Kerr Lakeside

Kerr Lakeside 1/4-28 x 3/8 in. Socket Head Cap Screw Black Oxide 100 Pieces

SKU CH-2SBH-5DNPB

1/4-28 UNF alloy-steel socket head cap screws, 3/8 in. long, black oxide finish, 100 pieces

  • Alloy steel construction delivers high tensile strength
  • Black oxide finish resists corrosion in demanding environments
  • Fine UNF threads provide precise adjustment control
  • Hex socket drive enables secure installation with 3/16 in. key
  • 100-piece pack supplies volume for production or maintenance

Inch socket head cap screws in black oxide

These Kerr Lakeside socket head cap screws use a 1/4-28 UNF fine thread and a 3/8 inch overall length. The drive is a 3/16 inch hex socket. Alloy steel construction with a black oxide finish provides corrosion resistance. A pack contains 100 pieces for production or maintenance stock.

Suited for fine-thread inch applications

Builders assembling components that require a 1/4-28 UNF thread and a short 3/8 inch grip length will find these screws appropriate. Not for applications needing a coarse thread, a metric thread or a longer grip length. The fully threaded shank and cylindrical head suit standard socket-head clearance holes.

The thread specification decides fit

The defining spec is the 1/4-28 UNF thread designation. If the tapped hole or nut calls for that exact diameter and pitch, these screws will engage correctly. A different thread series or pitch will not mate with the fastener.

How it compares

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

Price $8.99
Cheaper than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameProspect Fastener

Questions about this item

Should I choose the 1/4-28 x 3/8 inch size or a different thread pitch for my application?

This pack contains 100 pieces of 1/4-28 UNF fine-thread screws with a 3/8 inch length. Select this size only if your tapped holes match the 1/4 inch diameter and 28 threads per inch specification.

What does the 3/8 inch length mean once the screw is installed in a machine?

The 3/8 inch length measures from under the cylindrical head to the tip. Because the thread length is also 3/8 inch, the screw is fully threaded, so the entire shank engages the tapped hole when seated.

The drive is a 3/16 inch hex socket — what tool fits and what torque can it practically handle?

Use a 3/16 inch hex key or bit. The alloy steel construction with black oxide finish supports standard socket-head torque values for 1/4 inch diameter fasteners; apply lubricant if higher clamping force is needed.

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