The Washer,spring Tension, cataloged under National Stock Number 5310-00-866-0004, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell Intl Inc Defense Avionics Systems. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-866-0004 |
| Primary Part Number | 774421-1 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems |
| Status | ACTIVE |
| 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 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 774421-1 PRIMARY | Honeywell Intl Inc Defense Avionics Systems (USA) |
NSN 5310-00-866-0004 is a Washer,spring Tension, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-866-0004 has 1 manufacturer part number on file: 774421-1 (Honeywell Intl Inc Defense Avionics Systems).
Key specifications for 774421-1: Overall Height: 0.040 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN; 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. 5 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.