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6508670 — NUT,PLAIN,CLINCH

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6508670: NUT,PLAIN,CLINCH.

The NUT,PLAIN,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: CLINCH, nut_height: 0.250 INCHES NOMINAL IN, pilot_length: 0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-372-0344, 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
6508670
NSN: 5310-01-372-0344
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleCLINCH
nut_height0.250 INCHES NOMINAL IN
pilot_length0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
pilot_diameter0.083 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
special_featuresTHE RECESSED SHALL ACCOMODATE A. 125 INCH PLATE THICKNESS WHEN INSTALLED INTO .265 MINUS-PLUS .002 INCH MOUNTING HOLE IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.312 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
NSN5310-01-372-0344
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6508670 · 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: 0.312 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072,FINISH E-300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
PILOT DIAMETER: 0.083 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
•
PILOT LENGTH: 0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,FINISH E-300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.164 INCHES IN
PILOT DIAMETER0.083 INCHES MINIMUM AND 0.093 INCHES MAXIMUM IN
PILOT LENGTH0.259 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
NUT HEIGHT0.250 INCHES NOMINAL IN
SPECIAL FEATURESTHE RECESSED SHALL ACCOMODATE A. 125 INCH PLATE THICKNESS WHEN INSTALLED INTO .265 MINUS-PLUS .002 INCH MOUNTING HOLE IN
SURFACE TREATMENTPASSIVATE OVERALL
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
NCN-8-2-4-8Reference 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 6508670?
6508670 is a NUT,PLAIN,CLINCH.
What parts can replace 6508670?
There is 1 known substitute for 6508670: NCN-8-2-4-8. Substitute compatibility should be verified for your specific system.
What is the NSN for 6508670?
6508670 is cataloged in the U.S. Government catalog under NSN 5310-01-372-0344. 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.