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181333 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

181333: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: HEXAGON, grip_length: 2.750 INCHES NOMINAL IN, head_height: 0.203 INCHES NOMINAL IN, thread_class: 2A A, fastener_length: 2.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-021-2544, 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
181333
NSN: 5306-00-021-2544
NIINs: 000212544, 015328017
FSC: 5306 — Bolts
CAGE: 72582 — ROLLS-ROYCE SOLUTIONS AMERICA INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleHEXAGON
grip_length2.750 INCHES NOMINAL IN
head_height0.203 INCHES NOMINAL IN
thread_class2A A
fastener_length2.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_between_flats0.494 INCHES NOMINAL IN
end_item_identification2320-01-432-4847 M-916A1 (LET), M-915 SERIES TRUCK
nominal_thread_diameter0.309 INCHES IN
thread_quantity_per_inch18
NSN5306-00-021-2544
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 181333 · 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
SUBSTITUTES & CROSS-REFERENCES 3
445066Reference document
Same NSN cross-reference
Reference document — Secondary reference
5306000212544Reference document
Same NSN cross-reference
Reference document — Informative reference only
DDE 00181333Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 181333?
181333 is a BOLT,MACHINE.
What parts can replace 181333?
There are 3 known substitutes for 181333: 445066, 5306000212544, DDE 00181333. Substitute compatibility should be verified for your specific system.
What is the NSN for 181333?
181333 is cataloged in the U.S. Government catalog under NSN 5306-00-021-2544. 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.