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3139981 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

3139981: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: ALUMINUM OVERALL, hole_diameter: 0.302 INCHES NOMINAL IN, outside_diameter: 0.672 INCHES NOMINAL IN, surface_treatment: ANODIZE OVERALL, material_thickness: 0.030 INCHES NOMINAL IN, external_straight_key_width: 0.187 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-317-7413, 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
3139981
NSN: 5310-01-317-7413
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialALUMINUM OVERALL
hole_diameter0.302 INCHES NOMINAL IN
outside_diameter0.672 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
material_thickness0.030 INCHES NOMINAL IN
external_straight_key_width0.187 INCHES NOMINAL IN
NSN5310-01-317-7413
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3139981 · 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
•
OUTSIDE DIAMETER: 0.672 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.030 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 0.187 INCHES NOMINAL IN
•
SURFACE TREATMENT: ANODIZE OVERALL
•
MATERIAL: ALUMINUM OVERALL
•
HOLE DIAMETER: 0.302 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OUTSIDE DIAMETER0.672 INCHES NOMINAL IN
MATERIAL THICKNESS0.030 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH0.187 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE OVERALL
MATERIALALUMINUM OVERALL
HOLE DIAMETER0.302 INCHES NOMINAL IN
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3139981?
3139981 is a WASHER,KEY.
What is the NSN for 3139981?
3139981 is cataloged in the U.S. Government catalog under NSN 5310-01-317-7413. 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.