1/4-20 x 1 1/4 Alloy Steel Low Head Socket Cap Screw gives machine builders an alloy steel socket screw option for restricted-clearance fastening points. The low head form is useful where a taller fastener head would interfere with covers, slides, guards, or adjacent components.

Design teams use it in maintenance work and machinery repair, where the exact size helps buyers match drawings, repair lists, and installed hardware. It can be selected for fixture construction and precision tooling, where the lower profile can reduce interference with clamps, slides, or locating features. The low-head form keeps head height near one-half of the body diameter, helping engineers manage clearance-sensitive assemblies.

When confirming clearance, review the basic diameter, head diameter, head height, and hex socket size listed in the Technical Highlights. This approach keeps the application notes readable while preserving the verified dimensions.

Technical Highlights

  • Material: Alloy Steel
  • Thread Size: 1/4-20
  • Length: 1 1/4 in.
  • Basic Diameter: 0.250 in.
  • Head Diameter: 0.369-0.375 in.
  • Head Height: 0.121-0.127 in.
  • Hex Socket Size: 1/8 in.
  • Minimum Key Engagement: 0.094 in.
  • Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.

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 1/4-20

Length

N/A 1 1/4 in

Basic Diameter

N/A 0.250 in

Maximum Head Diameter

N/A 0.375 in

Minimum Head Diameter

N/A 0.369 in

Maximum Head Height

N/A 0.127 in

Minimum Head Height

N/A 0.121 in

Hex Socket Size

N/A 1/8 in

Minimum Key Engagement

N/A 0.094 in

Material

N/A Alloy Steel

Quantity

N/A 100

Package Type

N/A Box

Search

N/A ASLHSCS.1/4-20.1 1/4

Note

Note

N/A Less Than Package Quantity Specified Plus 25%.