The Washer,spring Tension, cataloged under National Stock Number 5310-00-487-6563, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-487-6563 |
| Primary Part Number | PB21504 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell Intl Inc Defense Avionics Systems |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.094 INCHES NOMINAL IN |
| Material Thickness | 0.006 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 0.031 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 |
|---|---|
| PB21504 | Honeywell Intl Inc Defense Avionics Systems (USA) |
| Reference | Meaning |
|---|---|
| 1494236 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| PB21504 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| 1494236 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| PB21504 | 3/9 Design control — primary reference Smiths Detection Inc. Dba Smiths Detection Inc Casc |
NSN 5310-00-487-6563 is a Washer,spring Tension, manufactured by Honeywell Intl Inc Defense Avionics Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-487-6563 has 1 manufacturer part number on file: PB21504 (Honeywell Intl Inc Defense Avionics Systems).
1 possible match (shared part number, not a government interchangeability claim): 5307-01-471-3872. Verify interchangeability with system specifications before substitution.
Key specifications for PB21504: Overall Height: 0.014 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Outside Diameter: 0.094 INCHES NOMINAL IN; Material Thickness: 0.006 INCHES NOMINAL 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.