Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW
The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY. This part is cataloged in the Federal Logistics Information System under NSN 5305-00-155-3367, indicating validated use in U.S.
government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
91251A624
NSN:5305-00-155-3367 FSC:5305 CAGE:39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
criticality_code_justification
ZZZY
reference_number_differentiating_characteristics
MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
NSN
5305-00-155-3367
COMPONENT DIAGRAM
KEY FEATURES
•
HEAD HEIGHT: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SURFACE TREATMENT: OXIDE OVERALL
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL: STEEL OVERALL
•
MINIMUM YIELD STRENGTH: 155000 POUNDS PER SQUARE INCH LBS
•
THREAD SERIES DESIGNATOR: UNRC
•
THREAD LENGTH: 0.845 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT
0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
OXIDE OVERALL
HARDNESS RATING
38.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
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FREQUENTLY ASKED QUESTIONS
What is 91251A624?
91251A624 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 91251A624?
There are 6 known substitutes for 91251A624: NAS1352-6-16, FF-S-86, MS16997-99 and 3 more. Substitute compatibility should be verified for your specific system.
Is 91251A624 still available?
91251A624 is currently cancelled.
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