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3/8-16 x 1 1/4 Alloy Steel Low Head Socket Cap Screw helps engineers keep a compact profile in assemblies where overhead clearance is limited. The internal hex drive keeps tool engagement within the head, which is useful when machinery leaves limited overhead or side clearance.

Engineers often specify this configuration for fixture construction and precision tooling, where the lower profile can reduce interference with clamps, slides, or locating features. The same low-head geometry works in maintenance work and machinery repair, where the exact size helps buyers match drawings, repair lists, and installed hardware. Internal hex drive engagement keeps the wrenching feature within the head, supporting compact installation and service access.

The reduced head height is intended for clearance-sensitive assemblies where a taller fastener head could interfere with covers, guards, slides, or adjacent machine components.

Technical Highlights

  • Material: Alloy Steel
  • Thread Size: 3/8-16
  • Length: 1 1/4 in.
  • Basic Diameter: 0.375 in.
  • Head Diameter: 0.556-0.562 in.
  • Head Height: 0.182-0.192 in.
  • Hex Socket Size: 3/16 in.
  • Minimum Key Engagement: 0.115 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 3/8-16

Length

 N/A 1 1/4 in

Basic Diameter

 N/A 0.375 in

Maximum Head Diameter

 N/A 0.562 in

Minimum Head Diameter

 N/A 0.556 in

Maximum Head Height

 N/A 0.192 in

Minimum Head Height

 N/A 0.182 in

Hex Socket Size

 N/A 3/16 in

Minimum Key Engagement

 N/A 0.115 in

Material

 N/A Alloy Steel

Quantity

 N/A 100

Package Type

 N/A Box

Search

 N/A ASLHSCS.3/8-16.1 1/4

Note

Note

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