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446502 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

446502: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include MATERIAL: STEEL COMP 1010 OVERALL, THICKNESS: 0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN, HOLE DIAMETER: 0.625 INCHES NOMINAL IN, OVERALL DIAMETER: 2.125 INCHES NOMINAL IN, SURFACE TREATMENT: CADMIUM OR ZINC OVERALL, PERIPHERAL SHAPE STYLE: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-579-3603, 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
446502
NSN: 5310-00-579-3603
NIINs: 005793603, 007840317
FSC: 5310 — Nuts and Washers
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
MATERIALSTEEL COMP 1010 OVERALL
THICKNESS0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
HOLE DIAMETER0.625 INCHES NOMINAL IN
OVERALL DIAMETER2.125 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-579-3603
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 446502 · 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
•
OVERALL DIAMETER: 2.125 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 1010 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.125 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1010 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.625 INCHES NOMINAL IN
THICKNESS0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
145-4510926B12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 446502?
446502 is a WASHER,FLAT.
What parts can replace 446502?
There is 1 known substitute for 446502: 145-4510926B12. Substitute compatibility should be verified for your specific system.
What is the NSN for 446502?
446502 is cataloged in the U.S. Government catalog under NSN 5310-00-579-3603. 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.