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4000337021 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4000337021: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.00 INCHES NOMINAL IN, fastener_length: 6.50 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-657-9648, 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
4000337021
NSN: 5306-01-657-9648
FSC: 5306 — Bolts
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
thread_class2A A
thread_length1.00 INCHES NOMINAL IN
fastener_length6.50 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPHOSPHATE ZINC OVERALL
width_between_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
end_item_identificationMRAP - M-ATV UI W/OGPK
nominal_thread_diameter0.3750 INCHES IN
thread_quantity_per_inch16
NSN5306-01-657-9648
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4000337021 · 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: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
•
FASTENER LENGTH: 6.50 INCHES NOMINAL IN
•
THREAD LENGTH: 1.00 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J429 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.3750 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
FASTENER LENGTH6.50 INCHES NOMINAL IN
THREAD LENGTH1.00 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.3750 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
COLORBLACK OVERALL
SURFACE TREATMENTPHOSPHATE ZINC OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
4000337Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 4000337021?
4000337021 is a BOLT,MACHINE.
What parts can replace 4000337021?
There is 1 known substitute for 4000337021: 4000337. Substitute compatibility should be verified for your specific system.
What is the NSN for 4000337021?
4000337021 is cataloged in the U.S. Government catalog under NSN 5306-01-657-9648. 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.