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N9641 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

N9641: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include width: 0.03 INCHES NOMINAL IN, material: STEEL OVERALL, hole_diameter: 0.32 INCHES NOMINAL IN, overall_diameter: 0.59 INCHES NOMINAL IN, surface_treatment: PHOSPHATE AND ZINC OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-669-7668, 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
N9641
NSN: 5310-01-669-7668
FSC: 5310 — Nuts and Washers
CAGE: 76761 — C E NIEHOFF & CO (USA)
SPECIFICATIONS
width0.03 INCHES NOMINAL IN
materialSTEEL OVERALL
hole_diameter0.32 INCHES NOMINAL IN
overall_diameter0.59 INCHES NOMINAL IN
surface_treatmentPHOSPHATE AND ZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
part_name_assigned_by_controlling_agencyWASHER
NSN5310-01-669-7668
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: N9641 · 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
•
OVERALL DIAMETER: 0.59 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE AND ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
WIDTH: 0.03 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.32 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.59 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE AND ZINC OVERALL
PERIPHERAL SHAPE STYLEROUND
WIDTH0.03 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.32 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is N9641?
N9641 is a WASHER,FLAT.
What is the NSN for N9641?
N9641 is cataloged in the U.S. Government catalog under NSN 5310-01-669-7668. 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.