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B1821AH025F100N

Screw

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Description

Fastener Length: 1-", Thread: 1/4-28, Thread Length: 15/16"

Specifications

Fastener Length 1.000
Hardness Rating 32.0 rockwell c minimum and 38.0 rockwell c maximum
Head Height 0.150 inches minimum and 0.163 inches maximum
Head Style Hexagon Head
Material Steel
Material Specification Sae gr 8 assn std single material response
Min. Tensile Strength (psi) 150000 pounds per square inch
Surface Treatment Cadmium and chromate
Surface Treatment Specification Qq-p-416, type ii, class 3 fed spec all treatment responses
Thread Class 2a
Thread Diameter 0.250
Thread Direction Right-hand
Thread Length 0.750 inches minimum and 0.938 inches maximum
Thread Qty 28
Thread Qty Per Inch (tpi) 28
Thread Series Designator UNF
Thread Size 1/4
Width Between Flats 0.428 inches minimum and 0.438 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.

  • MS35308-308 MS 1/4-28 · 0.073 in · Hexagon Head · CRES
  • MS35308-309 MS 1/4-28 · 0.073 in · Hexagon Head · CRES
  • MS35308-313 MS 1/4-28 · 0.073 in · Hexagon Head · CRES
  • MS90726-11 MS 1/4-28 · 0.073 in · Hexagon Head · Steel
  • MS90726-12 MS 1/4-28 · 0.073 in · Hexagon Head · Steel
  • MS90726-9 MS 1/4-28 · 0.073 in · Hexagon Head · Steel
  • B1821BH025F113N Other 1/4-28 · 0.073 in · Hexagon Head · Steel
  • B1821BH025F150N Other 1/4-28 · 0.073 in · Hexagon Head · Steel

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