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12-34931 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12-34931: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, special_features: PLATE STEEL .406 X .734 X .063 INCHES IN, end_item_identification: MARINER GASOLINE OUTBOARD MOTOR SET. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-458-7738, 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
12-34931
NSN: 5310-01-458-7738
NIINs: 014587738, 015132764
FSC: 5310 — Nuts and Washers
CAGE: 63931 — BRUNSWICK CORP MARINER OUTBOARDS DIV (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
special_featuresPLATE STEEL .406 X .734 X .063 INCHES IN
end_item_identificationMARINER GASOLINE OUTBOARD MOTOR SET
NSN5310-01-458-7738
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12-34931 · 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
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESPLATE STEEL .406 X .734 X .063 INCHES IN
END ITEM IDENTIFICATIONMARINER GASOLINE OUTBOARD MOTOR SET
MATERIALSTEEL CORROSION RESISTING OVERALL
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 12-34931?
12-34931 is a WASHER,FLAT.
What is the NSN for 12-34931?
12-34931 is cataloged in the U.S. Government catalog under NSN 5310-01-458-7738. 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.