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502537-4 — NUT,PLAIN,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

502537-4: NUT,PLAIN,CLINCH.

The NUT,PLAIN,CLINCH is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6262 OR ALUMINUM ALLOY 2011 OR ALUMINUM ALLOY 6061 OVERALL, nut_style: CLINCH, nut_height: 0.352 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN, nut_diameter: 0.250 INCHES NOMINAL IN, pilot_length: 0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN, thread_class: 2B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-034-6634, 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
502537-4
NSN: 5310-01-034-6634
FSC: 5310 — Nuts and Washers
CAGE: 20284 — AIMTRON SYSTEMS, LLC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6262 OR ALUMINUM ALLOY 2011 OR ALUMINUM ALLOY 6061 OVERALL
nut_styleCLINCH
nut_height0.352 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
nut_diameter0.250 INCHES NOMINAL IN
pilot_length0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.185 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
special_featuresCOLOR GOLD
thread_directionRIGHT-HAND
surface_treatmentCHROMATE OVERALL
nominal_thread_size0.112 INCHES IN
NSN5310-01-034-6634
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 502537-4 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/10,TEMPER T9 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/3,TEMPER T3 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T6 FED SPEC 3RD MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.112 INCHES IN
•
NUT DIAMETER: 0.250 INCHES NOMINAL IN
•
PILOT DIAMETER: 0.185 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/10,TEMPER T9 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/3,TEMPER T3 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T6 FED SPEC 3RD MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
NUT DIAMETER0.250 INCHES NOMINAL IN
PILOT DIAMETER0.185 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
PILOT LENGTH0.102 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
NUT HEIGHT0.352 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN
SPECIAL FEATURESCOLOR GOLD
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
9533B-A-0440-10Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 502537-4?
502537-4 is a NUT,PLAIN,CLINCH.
What parts can replace 502537-4?
There is 1 known substitute for 502537-4: 9533B-A-0440-10. Substitute compatibility should be verified for your specific system.
What is the NSN for 502537-4?
502537-4 is cataloged in the U.S. Government catalog under NSN 5310-01-034-6634. 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.