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91900A653 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91900A653: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 18.8 OVERALL, head_style: PAN, head_height: 0.199 INCHES NOMINAL IN, thread_class: 3A A, head_diameter: 0.656 INCHES NOMINAL IN, thread_length: 1.0 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-672-8258, 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
91900A653
NSN: 5305-01-672-8258
FSC: 5305 — Screws
CAGE: 3A054 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 18.8 OVERALL
head_stylePAN
head_height0.199 INCHES NOMINAL IN
thread_class3A A
head_diameter0.656 INCHES NOMINAL IN
thread_length1.0 INCHES NOMINAL IN
fastener_length1.0 INCHES NOMINAL IN
special_featuresT45 DRIVE WITH TAMPER RESISTANT FEATURE,POST IN CENTER OF DRIVE RECESS
thread_directionRIGHT-HAND
internal_drive_styleTORQUE
end_item_identificationNIIN: 016580431
nominal_thread_diameter0.375 INCHES IN
NSN5305-01-672-8258
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91900A653 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
HEAD HEIGHT: 0.199 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.0 INCHES NOMINAL IN
•
THREAD LENGTH: 1.0 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD STYLE: PAN
•
THREAD DIRECTION: RIGHT-HAND
•
INTERNAL DRIVE STYLE: TORQUE
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.199 INCHES NOMINAL IN
FASTENER LENGTH1.0 INCHES NOMINAL IN
THREAD LENGTH1.0 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD STYLEPAN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATUREST45 DRIVE WITH TAMPER RESISTANT FEATURE,POST IN CENTER OF DRIVE RECESS
INTERNAL DRIVE STYLETORQUE
THREAD CLASS3A A
END ITEM IDENTIFICATIONNIIN: 016580431
SUBSTITUTES & CROSS-REFERENCES 1
75410Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91900A653?
91900A653 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 91900A653?
There is 1 known substitute for 91900A653: 75410. Substitute compatibility should be verified for your specific system.
What is the NSN for 91900A653?
91900A653 is cataloged in the U.S. Government catalog under NSN 5305-01-672-8258. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.