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NSA5057C9 — NUT,SELF-LOCKING,ASSEMBLED WASHE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NSA5057C9: NUT,SELF-LOCKING,ASSEMBLED WASHE.

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: STEEL COMP 8740 OVERALL, nut_style: FLAT, overall_height: 18.288 MILLIMETERS MINIMUM MM, surface_treatment: CADMIUM OVERALL, washer_outside_diameter: 28.321 MILLIMETERS MINIMUM MM, specification/standard_data: 27238-MIL-N-25027 GOVERNMENT SPECIFICATION. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-669-2222, 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
NSA5057C9
NSN: 5310-01-669-2222
FSC: 5310 — Nuts and Washers
CAGE: 27238 — BRISTOL INDUSTRIES, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 8740 OVERALL
nut_styleFLAT
overall_height18.288 MILLIMETERS MINIMUM MM
surface_treatmentCADMIUM OVERALL
washer_outside_diameter28.321 MILLIMETERS MINIMUM MM
specification/standard_data27238-MIL-N-25027 GOVERNMENT SPECIFICATION
part_name_assigned_by_controlling_agencyNUT-SELF-LOCKING WITH CAPRIVE WASHER
NSN5310-01-669-2222
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NSA5057C9 · 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
•
WASHER OUTSIDE DIAMETER: 28.321 MILLIMETERS MINIMUM MM
•
SPECIFICATION/STANDARD DATA: 27238-MIL-N-25027 GOVERNMENT SPECIFICATION
•
SURFACE TREATMENT: CADMIUM OVERALL
•
NUT STYLE: FLAT
•
MATERIAL: STEEL COMP 8740 OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT18.288 MILLIMETERS MINIMUM MM
WASHER OUTSIDE DIAMETER28.321 MILLIMETERS MINIMUM MM
SPECIFICATION/STANDARD DATA27238-MIL-N-25027 GOVERNMENT SPECIFICATION
SURFACE TREATMENTCADMIUM OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNUT-SELF-LOCKING WITH CAPRIVE WASHER
NUT STYLEFLAT
MATERIALSTEEL COMP 8740 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NSA5057C9?
NSA5057C9 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.
What is the NSN for NSA5057C9?
NSA5057C9 is cataloged in the U.S. Government catalog under NSN 5310-01-669-2222. 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.