PartsTable
Technical Data Sheet
Download PDF

88-21663 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

88-21663: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.512 INCHES NOMINAL IN, overall_height: 0.135 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN, outside_diameter: 1.142 INCHES NOMINAL IN, style_designator: SPRING TENSION, surface_treatment: CHROMATE AND ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-366-5374, 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
88-21663
NSN: 5310-01-366-5374
FSC: 5310 — Nuts and Washers
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.512 INCHES NOMINAL IN
overall_height0.135 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
outside_diameter1.142 INCHES NOMINAL IN
style_designatorSPRING TENSION
surface_treatmentCHROMATE AND ZINC OVERALL
material_thickness0.118 INCHES NOMINAL IN
NSN5310-01-366-5374
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 88-21663 · 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: SPRING TENSION
•
OUTSIDE DIAMETER: 1.142 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.118 INCHES NOMINAL IN
•
SURFACE TREATMENT: CHROMATE AND ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.512 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.135 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN
STYLE DESIGNATORSPRING TENSION
OUTSIDE DIAMETER1.142 INCHES NOMINAL IN
MATERIAL THICKNESS0.118 INCHES NOMINAL IN
SURFACE TREATMENTCHROMATE AND ZINC OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.512 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 1
0120-1364Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 88-21663?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 88-21663?
88-21663 is a WASHER,SPRING TENSION.
What parts can replace 88-21663?
There is 1 known substitute for 88-21663: 0120-1364. Substitute compatibility should be verified for your specific system.
What is the NSN for 88-21663?
88-21663 is cataloged in the U.S. Government catalog under NSN 5310-01-366-5374. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 88-21663

✓ 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.