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B1821BH031C088N

Screw

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Description

Fastener Length: 7/8", Thread: 1/4-18, Thread Length: 7/8"

Specifications

Fastener Length 0.844 inches minimum and 0.875 inches maximum
Features Provided Finished head
Head Height 0.195 inches minimum and 0.211 inches maximum
Head Style Hexagon Head
Length 7/8
Material Steel
Material Specification Sae j429 grade 8 assn std single material response or astm a354 grade bd assn std single material response
Min. Tensile Strength (psi) 150000 pounds per square inch
Specification Data 05047-aeb02c313875aw9a91 professional/industrial association specification
Surface Finish 63.0 microinches threads
Surface Treatment Zinc and chromate
Surface Treatment Specification Astm b633 ty 2 sc 3 assn std single treatment response
Thread Class 2a
Thread Diameter 0.312
Thread Direction Right-hand
Thread Length 0.705 inches minimum and 0.875 inches maximum
Thread Qty 18
Thread Qty Per Inch (tpi) 18
Thread Series Designator UNC
Thread Size 1/4
Width Between Flats 0.489 inches minimum and 0.500 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.

  • MS90725-33 MS 1/4-18 · 7/8 in · Hexagon Head · Steel

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