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3125-24UNJF-3B — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3125-24UNJF-3B: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include nut_height: 0.400 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN, width_across_flats: 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN, end_item_identification: TF34 ENGINE, part_name_assigned_by_controlling_agency: NAVY SPECIAL PROJECT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-400-3654, 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
3125-24UNJF-3B
NSN: 5310-01-400-3654
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
nut_height0.400 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
width_across_flats0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
end_item_identificationTF34 ENGINE
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
NSN5310-01-400-3654
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3125-24UNJF-3B · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.400 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
NUT HEIGHT0.400 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
END ITEM IDENTIFICATIONTF34 ENGINE
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
3020T63P13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 3125-24UNJF-3B?
3125-24UNJF-3B is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 3125-24UNJF-3B?
There is 1 known substitute for 3125-24UNJF-3B: 3020T63P13. Substitute compatibility should be verified for your specific system.
What is the NSN for 3125-24UNJF-3B?
3125-24UNJF-3B is cataloged in the U.S. Government catalog under NSN 5310-01-400-3654. 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.