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12Z335-248 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12Z335-248: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 3.395 INCHES MINIMUM AND 3.425 INCHES MAXIMUM IN, outside_diameter: 4.031 INCHES MINIMUM AND 4.061 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: CADMIUM OR ZINC OR CHROMATE OVERALL, material_thickness: 0.072 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-656-0407, 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
12Z335-248
NSN: 5310-00-656-0407
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter3.395 INCHES MINIMUM AND 3.425 INCHES MAXIMUM IN
outside_diameter4.031 INCHES MINIMUM AND 4.061 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentCADMIUM OR ZINC OR CHROMATE OVERALL
material_thickness0.072 INCHES NOMINAL IN
external_key_quantity19
external_prebent_key_width0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
internal_prebent_key_width0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
internal_prebent_key_length0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
overall_distance_including_keys4.625 INCHES NOMINAL IN
NSN5310-00-656-0407
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12Z335-248 · 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
•
INTERNAL PREBENT KEY WIDTH: 0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
•
OVERALL DISTANCE INCLUDING KEYS: 4.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 4.031 INCHES MINIMUM AND 4.061 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.072 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 19
•
INTERNAL PREBENT KEY LENGTH: 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OR CHROMATE OVERALL
TECHNICAL CHARACTERISTICS
INTERNAL PREBENT KEY WIDTH0.313 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN
OVERALL DISTANCE INCLUDING KEYS4.625 INCHES NOMINAL IN
STYLE DESIGNATORKEY
OUTSIDE DIAMETER4.031 INCHES MINIMUM AND 4.061 INCHES MAXIMUM IN
MATERIAL THICKNESS0.072 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY19
INTERNAL PREBENT KEY LENGTH0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OR ZINC OR CHROMATE OVERALL
EXTERNAL PREBENT KEY WIDTH0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
MS19070-172Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5310006560407Reference document
Same NSN cross-reference
Reference document — Secondary reference
712089Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12Z335-248?
12Z335-248 is a WASHER,KEY.
What parts can replace 12Z335-248?
There are 3 known substitutes for 12Z335-248: MS19070-172, 5310006560407, 712089. Substitute compatibility should be verified for your specific system.
What is the NSN for 12Z335-248?
12Z335-248 is cataloged in the U.S. Government catalog under NSN 5310-00-656-0407. 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.