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N405P12B11 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

N405P12B11: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.319 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, outside_diameter: 0.575 INCHES MAXIMUM IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC AND DICHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-151-4136, 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
N405P12B11
NSN: 5310-01-151-4136
FSC: 5310 — Nuts and Washers
CAGE: 12532 — GENERAL ELECTRIC CO MOTOR BUSINESS GROUP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.319 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter0.575 INCHES MAXIMUM IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC AND DICHROMATE OVERALL
material_thickness0.056 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
NSN5310-01-151-4136
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N405P12B11 · 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
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.575 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.056 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
•
COLOR: OLIVE DRAB OVERALL
•
SURFACE TREATMENT: ZINC AND DICHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.319 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.575 INCHES MAXIMUM IN
MATERIAL THICKNESS0.056 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN
COLOROLIVE DRAB OVERALL
SURFACE TREATMENTZINC AND DICHROMATE OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.319 INCHES MINIMUM AND 0.333 INCHES MAXIMUM 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 1
5310PL0676638Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N405P12B11?
N405P12B11 is a WASHER,LOCK.
What parts can replace N405P12B11?
There is 1 known substitute for N405P12B11: 5310PL0676638. Substitute compatibility should be verified for your specific system.
What is the NSN for N405P12B11?
N405P12B11 is cataloged in the U.S. Government catalog under NSN 5310-01-151-4136. 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.