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04-28989C01 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

04-28989C01: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.261 INCHES NOMINAL IN, overall_height: 0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN, outside_diameter: 0.438 INCHES NOMINAL IN, surface_treatment: SILVER OVERALL, material_thickness: 0.008 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-772-4066, 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
04-28989C01
NSN: 5310-00-772-4066
FSC: 5310 — Nuts and Washers
CAGE: 1VPW8 — GENERAL DYNAMICS MISSION SYSTEMS, INC. DBA GDMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.261 INCHES NOMINAL IN
overall_height0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
outside_diameter0.438 INCHES NOMINAL IN
surface_treatmentSILVER OVERALL
material_thickness0.008 INCHES NOMINAL IN
NSN5310-00-772-4066
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 04-28989C01 · 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
•
OUTSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.008 INCHES NOMINAL IN
•
SURFACE TREATMENT: SILVER OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.261 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.035 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
MATERIAL THICKNESS0.008 INCHES NOMINAL IN
SURFACE TREATMENTSILVER OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.261 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 04-28989C01?
04-28989C01 is a WASHER,SPRING TENSION.
What is the NSN for 04-28989C01?
04-28989C01 is cataloged in the U.S. Government catalog under NSN 5310-00-772-4066. 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.