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Pack of 25 black oxide alloy steel socket head cap screws .5 - 13 x 5.5 in

Kerr Lakeside

Kerr Lakeside 50C550KCS .5 - 13 x 5.5 in. Socket Head Cap Screw Pack - 25 Pieces

SKU CH-CGA4-K1V7B

Pack of 25 alloy-steel socket head cap screws, 1/2 in. -13 x 5.5 in., black oxide finish, hex socket drive

  • Product typeSocket
  • Main materialHAWA
  • Alloy steel construction delivers high tensile strength
  • Black oxide finish resists corrosion in harsh environments
  • Hex socket drive allows secure installation with 3/8 in. key
  • Partially threaded shank provides grip and shear resistance
  • 25-piece pack covers multiple fastening tasks

Product Identity

This Kerr Lakeside pack contains 25 socket head cap screws made from alloy steel with a black oxide finish. Each fastener measures 1/2 in. -13 by 5.5 in. and uses a hex socket drive sized at 3/8 in. The partially threaded design includes a minimum thread length of 1 1/2 in. suited for inch-system assemblies.

Who It Suits

Mechanics and maintenance teams needing a ready supply of coarse-thread alloy steel screws for clamping or fastening tasks will find this quantity practical. Buyers who require fully threaded shanks, metric threads, or a different drive style should look at other fastener options.

Deciding Specification

The 1/2 in. -13 UNC thread size combined with a 5.5 in. overall length and 25-piece pack quantity determines whether this kit matches the hole pattern and stock level your project demands.

How it compares

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

Price $48.99
Pricier than about 66% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameKerr Lakeside
Product typeSocket
Size & build
Main materialHAWA

Questions about this item

What hex key size fits the 3/8 in. drive socket on these 1/2-13 x 5.5 in. cap screws?

A 3/8 in. hex key or bit engages the internal socket drive on each screw.

Which step is most often missed when installing these partially threaded 1/2-13 UNC screws?

Ensure the 1 1/2 in. threaded portion fully engages the tapped hole before tightening the unthreaded shank.

When should the black oxide finish on these alloy steel screws be inspected or replaced?

Replace any screw showing rust, rounded socket corners, or stretched threads after repeated high-torque use.

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