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4081428 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4081428: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 601 OVERALL, hole_diameter: 2.322 INCHES MINIMUM AND 2.326 INCHES MAXIMUM IN, hardness_rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM, outside_diameter: 3.375 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN, shoulder_diameter: 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN, material_document_and_classification: AMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-409-0182, 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
4081428
NSN: 5310-01-409-0182
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 601 OVERALL
hole_diameter2.322 INCHES MINIMUM AND 2.326 INCHES MAXIMUM IN
hardness_rating35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
outside_diameter3.375 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN
shoulder_diameter2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN
material_document_and_classificationAMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-409-0182
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4081428 · 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: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.375 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 601 OVERALL
•
HOLE DIAMETER: 2.322 INCHES MINIMUM AND 2.326 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
HARDNESS RATING35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.375 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN
SHOULDER DIAMETER2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN
MATERIALSTEEL COMP 601 OVERALL
HOLE DIAMETER2.322 INCHES MINIMUM AND 2.326 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
5310PL0787706Reference 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 4081428?
4081428 is a WASHER,SHOULDERED.
What parts can replace 4081428?
There is 1 known substitute for 4081428: 5310PL0787706. Substitute compatibility should be verified for your specific system.
What is the NSN for 4081428?
4081428 is cataloged in the U.S. Government catalog under NSN 5310-01-409-0182. 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.