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M8042521 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

M8042521: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include thread_length: 0.375 INCHES NOMINAL IN, thread_direction: RIGHT-HAND, end_item_identification: FPII COUGAR, part_name_assigned_by_controlling_agency: DRIVE SHAFT BOLT FLANGE 3/8". This part is cataloged in the U.S.

Government catalog under NSN 5306-01-570-4846, 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
M8042521
NSN: 5306-01-570-4846
FSC: 5306 — Bolts
CAGE: 27188 — MARMON-HERRINGTON COMPANY (USA)
SPECIFICATIONS
thread_length0.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
end_item_identificationFPII COUGAR
part_name_assigned_by_controlling_agencyDRIVE SHAFT BOLT FLANGE 3/8"
NSN5306-01-570-4846
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M8042521 · 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
•
THREAD LENGTH: 0.375 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
THREAD LENGTH0.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
PART NAME ASSIGNED BY CONTROLLING AGENCYDRIVE SHAFT BOLT FLANGE 3/8"
END ITEM IDENTIFICATIONFPII COUGAR
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 M8042521?
M8042521 is a BOLT,MACHINE.
What is the NSN for M8042521?
M8042521 is cataloged in the U.S. Government catalog under NSN 5306-01-570-4846. 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.