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1650050C1 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1650050C1: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include special_features: WASHER-SPRING LOCK 1/4, surface_treatment: OXIDE SEALING ELEMENT, end_item_identification: MRAP - UNIQUE NSN - MAXXPRO CAT I, part_name_assigned_by_controlling_agency: WASHER SPRING LOCK 1/4 BLACK O, surface_treatment_document_and_classification: TMS-4108 OPTION B FED SPEC SINGLE TREATMENT RESPONSE SEALING ELEMENT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-556-4534, 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
1650050C1
NSN: 5310-01-556-4534
FSC: 5310 — Nuts and Washers
CAGE: 338X5 — ND DEFENSE LLC (USA)
SPECIFICATIONS
special_featuresWASHER-SPRING LOCK 1/4
surface_treatmentOXIDE SEALING ELEMENT
end_item_identificationMRAP - UNIQUE NSN - MAXXPRO CAT I
part_name_assigned_by_controlling_agencyWASHER SPRING LOCK 1/4 BLACK O
surface_treatment_document_and_classificationTMS-4108 OPTION B FED SPEC SINGLE TREATMENT RESPONSE SEALING ELEMENT
NSN5310-01-556-4534
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1650050C1 · 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: TMS-4108 OPTION B FED SPEC SINGLE TREATMENT RESPONSE SEALING ELEMENT
•
COLOR: BLACK OVERALL
•
SURFACE TREATMENT: OXIDE SEALING ELEMENT
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONTMS-4108 OPTION B FED SPEC SINGLE TREATMENT RESPONSE SEALING ELEMENT
COLORBLACK OVERALL
SPECIAL FEATURESWASHER-SPRING LOCK 1/4
SURFACE TREATMENTOXIDE SEALING ELEMENT
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER SPRING LOCK 1/4 BLACK O
END ITEM IDENTIFICATIONMRAP - UNIQUE NSN - MAXXPRO CAT I
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

No substitute or cross-reference records for this part.

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 1650050C1?
1650050C1 is a WASHER,LOCK.
What is the NSN for 1650050C1?
1650050C1 is cataloged in the U.S. Government catalog under NSN 5310-01-556-4534. 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.