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K51492-5-1 — NUT,SELF-LOCKING,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

K51492-5-1: NUT,SELF-LOCKING,CLINCH.

The NUT,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_diameter: 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.492 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN, pilot_diameter: 0.368 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-174-1556, 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
K51492-5-1
NSN: 5310-01-174-1556
FSC: 5310 — Nuts and Washers
CAGE: 15653 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_diameter0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.492 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
pilot_diameter0.368 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
surface_treatmentSILVER OVERALL
nominal_thread_size0.3125 INCHES IN
thread_quantity_per_inch24
precious_material_and_locationON THREADS AND BOTH ENDS SILVER
material_document_and_classificationAMS5709,WASPALL0Y ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-174-1556
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: K51492-5-1 · 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
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5709,WASPALL0Y ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.3125 INCHES IN
•
NUT DIAMETER: 0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
•
PILOT DIAMETER: 0.368 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
•
SURFACE TREATMENT: SILVER OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.492 INCHES MINIMUM AND 0.522 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5709,WASPALL0Y ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.3125 INCHES IN
NUT DIAMETER0.540 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
PILOT DIAMETER0.368 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
SURFACE TREATMENTSILVER OVERALL
PRECIOUS MATERIAL AND LOCATIONON THREADS AND BOTH ENDS SILVER
THREAD CLASS3B
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 3
9511M36P05Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9511M36P06Reference document
Same NSN cross-reference
Reference document — Secondary reference
9511M36Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 K51492-5-1?
K51492-5-1 is a NUT,SELF-LOCKING,CLINCH.
What parts can replace K51492-5-1?
There are 3 known substitutes for K51492-5-1: 9511M36P05, 9511M36P06, 9511M36. Substitute compatibility should be verified for your specific system.
What is the NSN for K51492-5-1?
K51492-5-1 is cataloged in the U.S. Government catalog under NSN 5310-01-174-1556. 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.