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90810A999 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

90810A999: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY AND NICKEL ALLOY 400 OVERALL, hardness_rating: 75.0 ROCKWELL A NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-539-5448, 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
90810A999
NSN: 5310-01-539-5448
FSC: 5310 — Nuts and Washers
CAGE: 07BY4 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY AND NICKEL ALLOY 400 OVERALL
hardness_rating75.0 ROCKWELL A NOMINAL
special_featuresSTRONGER THAN BRASS,SLIGHTLY MAGNETIC AND RESISTANT TO HEAT AND CORROSION,ESPECIALLY THAT CAUSED BY SALT WATER ABD CAUSTIC SOLUTIONS
NSN5310-01-539-5448
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90810A999 · 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
•
HARDNESS RATING: 75.0 ROCKWELL A NOMINAL
•
MATERIAL: COPPER ALLOY AND NICKEL ALLOY 400 OVERALL
TECHNICAL CHARACTERISTICS
HARDNESS RATING75.0 ROCKWELL A NOMINAL
SPECIAL FEATURESSTRONGER THAN BRASS,SLIGHTLY MAGNETIC AND RESISTANT TO HEAT AND CORROSION,ESPECIALLY THAT CAUSED BY SALT WATER ABD CAUSTIC SOLUTIONS
MATERIALCOPPER ALLOY AND NICKEL ALLOY 400 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 90810A999?
90810A999 is a NUT,SELF-LOCKING,HEXAGON.
What is the NSN for 90810A999?
90810A999 is cataloged in the U.S. Government catalog under NSN 5310-01-539-5448. 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.