1-72 x 1 1/4 Alloy Steel Button Head Socket Cap Screw is used where a rounded, lower-profile head helps keep exposed hardware compact without requiring countersinking. The alloy steel construction is suited to mechanical assemblies where the drawing calls for a low-profile rounded head and internal hex drive access.
Typical applications include brackets, fixtures, and tooling assemblies where the broad head distributes contact over a wider seating area. It also supports brackets, fixtures, and tooling assemblies when the broad head distributes contact over a wider seating area. Selection is usually driven by head shape, socket access, and exposed-surface requirements rather than by the geometry of a standard socket head cap screw.
For drawings using the 1-72 thread and 1 1/4 in. length, the reference head diameter is 0.129-0.139 in. and the head height is 0.033-0.039 in. The nominal body diameter and hex-key information below support fit checks, tool access planning, and replacement verification.
Reference dimensions may vary slightly by manufacturer.
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