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AN565A428H10

Aeronautical Standard Setscrew

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Description

Fastener Length: 5/8", Thread: 1/4-28, Head Width: 1/8", Thread Length: 5/8"

Specifications

Fastener Length 0.615 inches minimum and 0.635 inches maximum
Hardness Rating 45.0 rockwell c minimum and 53.0 rockwell c maximum
Head Style Headless (setscrew)
Internal Drive Style Hexagon
Length 5/8
Material Specification Mil-s-7720 mil spec 1st material response or mil-s-18732 mil spec 2nd material response
Point Style Flat
Surface Treatment Passivate
Surface Treatment Specification Qq-p-35 fed spec single treatment response
Thread Class 3a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.615 inches minimum and 0.635 inches maximum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNF
Thread Size 1/4
Width Across Flats 0.125 inches minimum and 0.127 inches maximum

Other sizes

Parts that share this base number, ordered by size. Always verify the full specification before substituting.

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.

  • MS51031-119 MS 1/4-28 · 5/8 in · Headless (setscrew) · CRES
  • AN565AC428H10 AN 1/4-28 · 5/8 in · Headless (setscrew) · CRES

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