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A42312 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A42312: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 12.2 MILLIMETERS NOMINAL MM, outside_diameter: 20.2 MILLIMETERS NOMINAL MM, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 3.35 MILLIMETERS MINIMUM AND 3.65 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-085-4901, 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
A42312
NSN: 5310-01-085-4901
FSC: 5310 — Nuts and Washers
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter12.2 MILLIMETERS NOMINAL MM
outside_diameter20.2 MILLIMETERS NOMINAL MM
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness3.35 MILLIMETERS MINIMUM AND 3.65 MILLIMETERS MAXIMUM MM
NSN5310-01-085-4901
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A42312 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 20.2 MILLIMETERS NOMINAL MM
•
MATERIAL THICKNESS: 3.35 MILLIMETERS MINIMUM AND 3.65 MILLIMETERS MAXIMUM MM
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 12.2 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER20.2 MILLIMETERS NOMINAL MM
MATERIAL THICKNESS3.35 MILLIMETERS MINIMUM AND 3.65 MILLIMETERS MAXIMUM MM
MATERIALSTEEL OVERALL
HOLE DIAMETER12.2 MILLIMETERS NOMINAL MM
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 1
2-916-690-009Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A42312?
A42312 is a WASHER,LOCK.
What parts can replace A42312?
There is 1 known substitute for A42312: 2-916-690-009. Substitute compatibility should be verified for your specific system.
What is the NSN for A42312?
A42312 is cataloged in the U.S. Government catalog under NSN 5310-01-085-4901. 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.