PartsTable
Technical Data Sheet
Download PDF

774421-1 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

774421-1: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.375 INCHES NOMINAL IN, overall_height: 0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN, outside_diameter: 0.493 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN, material_thickness: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN, material_document_and_classification: ECLIPSALOY 11,FSCM 02987 MFR REF SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-866-0004, 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
774421-1
NSN: 5310-00-866-0004
FSC: 5310 — Nuts and Washers
CAGE: 55972 — HONEYWELL INTL INC DEFENSE AVIONICS SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.375 INCHES NOMINAL IN
overall_height0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
outside_diameter0.493 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
material_thickness0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
material_document_and_classificationECLIPSALOY 11,FSCM 02987 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-866-0004
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 774421-1 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ECLIPSALOY 11,FSCM 02987 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.493 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONECLIPSALOY 11,FSCM 02987 MFR REF SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.493 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN
MATERIAL THICKNESS0.009 INCHES MINIMUM AND 0.011 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.375 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
Ready to buy 774421-1?
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 774421-1?
774421-1 is a WASHER,SPRING TENSION.
What is the NSN for 774421-1?
774421-1 is cataloged in the U.S. Government catalog under NSN 5310-00-866-0004. 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 — 774421-1

✓ 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.