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91280A334 — SCREW,CAP,HEXAGON HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

91280A334: SCREW,CAP,HEXAGON HEAD.

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL PROPERTY CLASS 8.8 OVERALL, head_style: HEXAGON, head_height: 4.0 MILLIMETERS NOMINAL MM, thread_class: 6H, thread_length: 25.0 MILLIMETERS NOMINAL MM, fastener_length: 25.0 MILLIMETERS NOMINAL MM. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-554-5224, 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
91280A334
NSN: 5305-01-554-5224
FSC: 5305 — Screws
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL PROPERTY CLASS 8.8 OVERALL
head_styleHEXAGON
head_height4.0 MILLIMETERS NOMINAL MM
thread_class6H
thread_length25.0 MILLIMETERS NOMINAL MM
fastener_length25.0 MILLIMETERS NOMINAL MM
hardness_rating21.0 ROCKWELL C MINIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats10.0 MILLIMETERS NOMINAL MM
end_item_identification2355-01-542-7908 VEHICLE-MOUNTED MINE DETECTOR; MRAP BUFFALO MK2A2
nominal_thread_diameter6.0 MILLIMETERS MM
NSN5305-01-554-5224
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91280A334 · 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: 4.0 MILLIMETERS NOMINAL MM
•
FASTENER LENGTH: 25.0 MILLIMETERS NOMINAL MM
•
THREAD PITCH IN MILLIMETERS: 1.0
•
THREAD LENGTH: 25.0 MILLIMETERS NOMINAL MM
•
HARDNESS RATING: 21.0 ROCKWELL C MINIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 6.0 MILLIMETERS MM
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT4.0 MILLIMETERS NOMINAL MM
FASTENER LENGTH25.0 MILLIMETERS NOMINAL MM
THREAD PITCH IN MILLIMETERS1.0
THREAD LENGTH25.0 MILLIMETERS NOMINAL MM
HARDNESS RATING21.0 ROCKWELL C MINIMUM OVERALL
NOMINAL THREAD DIAMETER6.0 MILLIMETERS MM
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS10.0 MILLIMETERS NOMINAL MM
SURFACE TREATMENTZINC OVERALL
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 3
1138566Reference document
Same NSN cross-reference
Reference document — Secondary reference
31161501Reference document
Same NSN cross-reference
Reference document — Secondary reference
34-00967Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91280A334?
91280A334 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 91280A334?
There are 3 known substitutes for 91280A334: 1138566, 31161501, 34-00967. Substitute compatibility should be verified for your specific system.
What is the NSN for 91280A334?
91280A334 is cataloged in the U.S. Government catalog under NSN 5305-01-554-5224. 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.