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91247A853 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91247A853: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.46875 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.750 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN, fastener_length: 4.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-565-2580, 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
91247A853
NSN: 5306-01-565-2580
NIINs: 015652580, 016113825
FSC: 5306 — Bolts
CAGE: 07070 — UNITED STATES DEPARTMENT OF THE NAVY DBA NAVAL SURFACE WARFARE CENTER PANAMA CITY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.46875 INCHES NOMINAL IN
thread_class2A A
thread_length1.750 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN
fastener_length4.500 INCHES NOMINAL IN
hardness_rating25.0 ROCKWELL C MAXIMUM OVERALL
special_featuresMATERIAL: GRADE 5 STEEL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats1.125 INCHES NOMINAL IN
end_item_identification2590-01-579-4990;MINE ROLLER SYSTEM,LTWT VEHICLE MOUNTED
NSN5306-01-565-2580
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91247A853 · 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 STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT,HEX
END ITEM IDENTIFICATION2590-01-553-6517;MINE ROLLER SYSTEM,PC GEN II
SUBSTITUTES & CROSS-REFERENCES 1
91257A559Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91247A853?
91247A853 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 91247A853?
There is 1 known substitute for 91247A853: 91257A559. Substitute compatibility should be verified for your specific system.
What is the NSN for 91247A853?
91247A853 is cataloged in the U.S. Government catalog under NSN 5306-01-565-2580. 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.