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4001659 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4001659: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include hole_diameter: 13.0 MILLIMETERS NOMINAL MM, overall_height: 17.0 MILLIMETERS NOMINAL MM, outside_diameter: 38.0 MILLIMETERS NOMINAL MM, special_features: MATERIAL IS A METAL ALLOY, style_designator: SHOULDERED, end_item_identification: MRAP - UNIQUE NSN - COUGAR JERRV 4X4 CAT I. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-557-6845, 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
4001659
NSN: 5310-01-557-6845
FSC: 5310 — Nuts and Washers
CAGE: 1EFH8 — GENERAL DYNAMICS LAND SYSTEMS - FORCE PROTECTION INC. DBA GDLS DIV GDLS-FP (USA)
SPECIFICATIONS
hole_diameter13.0 MILLIMETERS NOMINAL MM
overall_height17.0 MILLIMETERS NOMINAL MM
outside_diameter38.0 MILLIMETERS NOMINAL MM
special_featuresMATERIAL IS A METAL ALLOY
style_designatorSHOULDERED
end_item_identificationMRAP - UNIQUE NSN - COUGAR JERRV 4X4 CAT I
part_name_assigned_by_controlling_agencySHOULDERED WASHER
NSN5310-01-557-6845
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4001659 · 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: SHOULDERED
•
OUTSIDE DIAMETER: 38.0 MILLIMETERS NOMINAL MM
•
HOLE DIAMETER: 13.0 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT17.0 MILLIMETERS NOMINAL MM
STYLE DESIGNATORSHOULDERED
OUTSIDE DIAMETER38.0 MILLIMETERS NOMINAL MM
SPECIAL FEATURESMATERIAL IS A METAL ALLOY
PART NAME ASSIGNED BY CONTROLLING AGENCYSHOULDERED WASHER
END ITEM IDENTIFICATIONMRAP - UNIQUE NSN - COUGAR JERRV 4X4 CAT I
HOLE DIAMETER13.0 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

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 4001659?
4001659 is a WASHER,SHOULDERED.
What is the NSN for 4001659?
4001659 is cataloged in the U.S. Government catalog under NSN 5310-01-557-6845. 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.