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666164-419 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

666164-419: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, hole_diameter: 0.199 INCHES NOMINAL IN, shoulder_height: 0.062 INCHES NOMINAL IN, outside_diameter: 0.400 INCHES NOMINAL IN, style_designator: SHOULDERED, shoulder_diameter: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-059-8402, 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
666164-419
NSN: 5310-00-059-8402
FSC: 5310 — Nuts and Washers
CAGE: 12436 — BAE SYSTEMS INFORMATION AND ELECTRONIC SYSTEMS INTEGRATION INC. DIV BAE SYSTEMS INFORMATION & ELECTRONIC SYSTEMS INTEGRATION INC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
hole_diameter0.199 INCHES NOMINAL IN
shoulder_height0.062 INCHES NOMINAL IN
outside_diameter0.400 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter0.312 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
material_thickness0.032 INCHES NOMINAL IN
NSN5310-00-059-8402
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 666164-419 · 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
•
SHOULDER HEIGHT: 0.062 INCHES NOMINAL IN
•
STYLE DESIGNATOR: SHOULDERED
•
OUTSIDE DIAMETER: 0.400 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.032 INCHES NOMINAL IN
•
SHOULDER DIAMETER: 0.312 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
HOLE DIAMETER: 0.199 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SHOULDER HEIGHT0.062 INCHES NOMINAL IN
STYLE DESIGNATORSHOULDERED
OUTSIDE DIAMETER0.400 INCHES NOMINAL IN
MATERIAL THICKNESS0.032 INCHES NOMINAL IN
SHOULDER DIAMETER0.312 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL CORROSION RESISTING OVERALL
HOLE DIAMETER0.199 INCHES NOMINAL 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

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 666164-419?
666164-419 is a WASHER,SHOULDERED.
What is the NSN for 666164-419?
666164-419 is cataloged in the U.S. Government catalog under NSN 5310-00-059-8402. 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.