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12-28 x 5/8 Alloy Steel Socket Head Cap Screw gives engineers an internal-hex fastener for mechanical joints where socket engagement and dimensional consistency matter. The size callout supports replacement sourcing without changing the specified size when tooling plates cannot accept a substitute fastener. Applications often include processing equipment, assembly equipment, and precision assemblies, especially where counterbored or close-clearance mounting is required. The socket head form provides a cylindrical head suited to counterbores and recessed mounting pockets. Those verified dimensions support counterbore checks, tool selection, and replacement fastener review. Technical Highlights Material: Alloy Steel Thread: 12-28 Length: 5/8 in. Nominal Body Diameter: .215 in. Head Diameter: 0.337 in. min / 0.344 in. max Head Height: 0.211 in. min / 0.215 in. max Hex Key Size: 5/32 Drive Type: Internal hex socket Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.
Unit of Measure

Specifications

Brands

N/A Cold Headers, Inc.

Diameter

N/A 12-28

Length

N/A 5/8 in

Material

N/A Alloy Steel

Quantity

N/A 100

Package Type

N/A Box

Search

N/A ASSHCS.12-28.5/8