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218025925FA — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

218025925FA: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: PLASTIC LOCKING INSERT, nut_style: HEXAGON, nut_height: 0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-503-0381, 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
218025925FA
NSN: 5310-01-503-0381
NIINs: 015030381, 015817537
FSC: 5310 — Nuts and Washers
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialPLASTIC LOCKING INSERT
nut_styleHEXAGON
nut_height0.575 INCHES MINIMUM AND 0.610 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
width_across_flats0.741 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN
nominal_thread_size0.500 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch13
NSN5310-01-503-0381
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 218025925FA · 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
SUBSTITUTES & CROSS-REFERENCES 5
596-7409221-119Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
218025924FReference document
Same NSN cross-reference
Reference document — Secondary reference
B434-2310-119Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
NASM17828Reference document
Same NSN cross-reference
Reference document — Secondary reference
NASM25027Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 218025925FA?
218025925FA is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 218025925FA?
There are 5 known substitutes for 218025925FA: 596-7409221-119, 218025924F, B434-2310-119 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 218025925FA?
218025925FA is cataloged in the U.S. Government catalog under NSN 5310-01-503-0381. This indicates validated use in U.S. government and defense supply chains.
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