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4310592 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4310592: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_length: 1.375 INCHES NOMINAL IN, fastener_length: 2.500 INCHES NOMINAL IN, hardness_rating: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-576-0400, 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
4310592
NSN: 5306-01-576-0400
FSC: 5306 — Bolts
CAGE: 80212 — BAE SYSTEMS LAND & ARMAMENTS L.P. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_length1.375 INCHES NOMINAL IN
fastener_length2.500 INCHES NOMINAL IN
hardness_rating33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
end_item_identificationMRAP - UNIQUE NSN - MRAP NO PERMANENT WSDC IDENTIFIED
nominal_thread_diameter0.750 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNF
NSN5306-01-576-0400
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4310592 · 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
•
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.375 INCHES NOMINAL IN
•
HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: ZINC OVERALL
•
THREAD QUANTITY PER INCH: 16
TECHNICAL CHARACTERISTICS
FASTENER LENGTH2.500 INCHES NOMINAL IN
THREAD LENGTH1.375 INCHES NOMINAL IN
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.750 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTZINC OVERALL
END ITEM IDENTIFICATIONMRAP - UNIQUE NSN - MRAP NO PERMANENT WSDC IDENTIFIED
THREAD QUANTITY PER INCH16
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 4310592?
4310592 is a BOLT,MACHINE.
What is the NSN for 4310592?
4310592 is cataloged in the U.S. Government catalog under NSN 5306-01-576-0400. 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.