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MS51021-1

Military Standard Setscrew

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Description

Fastener Length: 1/8", Thread: 2-56, Head Width: 3/64", Thread Length: 1/8

Specifications

Drive Style Hexagon
Fastener Length 0.125
Head Style Headless (setscrew)
Internal Drive Style Hexagon
Length 1/8
Material Steel
Material Specification 66 federal standard all material responses
Point Style Cup
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 federal specification single treatment response
Thread Class 3a
Thread Diameter 0.086
Thread Direction Right-hand
Thread Length 0.125
Thread Qty 56
Thread Qty Per Inch (tpi) 56
Thread Series UNC
Thread Series Designator Unc (coarse thread)
Thread Size 2
Width Across Flats 0.035

Cross-reference

Similar parts

Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.

  • AN565D2H2 AN #2-56 · 1/8 in · Headless (setscrew) · Steel
  • AN565E2H2 AN #2-56 · 1/8 in · Headless (setscrew) · Steel
  • MS51965-1 MS #2-56 · 1/8 in · Headless (setscrew) · Steel

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Catalog data updated 2026-07-05. Report a data error