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Technical Data Sheet
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6402253-1 — 6402253-1

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6402253-1: 6402253-1.

The 6402253-1 is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 5315-01-455-9193, 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
6402253-1
NSN: 5315-01-455-9193
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number6402253-1
NSN5315-01-455-9193
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6402253-1 · 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
•
KEY CHAMFER ANGLE: 45.0 DEGREES NOMINAL
•
STARTING EDGE SHAPE: CHAMFERED
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
KEY CHAMFER LENGTH: 0.090 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
KEY CHAMFER ANGLE45.0 DEGREES NOMINAL
STARTING EDGE SHAPECHAMFERED
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH21.000 INCHES NOMINAL IN
OVERALL WIDTH0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN
KEY CHAMFER LENGTH0.090 INCHES NOMINAL IN
MATERIALNICKEL ALLOY R-405 OVERALL
SUBSTITUTES & CROSS-REFERENCES 5
211095467Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
6402253Reference document
Same NSN cross-reference
Reference document — Secondary reference
751-6402201 ITEM 42Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
751-6402253 ITEM 1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
751-6402201 FIND 42Reference 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 6402253-1?
6402253-1 is a 6402253-1.
What parts can replace 6402253-1?
There are 5 known substitutes for 6402253-1: 211095467, 6402253, 751-6402201 ITEM 42 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6402253-1?
6402253-1 is cataloged in the U.S. Government catalog under NSN 5315-01-455-9193. This indicates validated use in U.S. government and defense supply chains.
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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.