The Washer,spring Tension, cataloged under National Stock Number 5310-01-519-3835, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Firstmark Aerospace Corp. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-519-3835 |
| Primary Part Number | 2578853-2 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Firstmark Aerospace Corp |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Material Thickness | 0.016 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | BERYLLIUM COPPER (USE CUB000) OVERALL |
| Hole Diameter | 0.164 INCHES MINIMUM AND 0.170 INCHES MAXIMUM 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 |
|---|---|
| 2578853-2 PRIMARY | Firstmark Aerospace Corp (USA) |
| Reference | Meaning |
|---|---|
| 2578853-2 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell International |
NSN 5310-01-519-3835 is a Washer,spring Tension, manufactured by Firstmark Aerospace Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-519-3835 has 1 manufacturer part number on file: 2578853-2 (Firstmark Aerospace Corp).
Key specifications for 2578853-2: Overall Height: 0.032 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN; Style Designator: SPRING TENSION; Outside Diameter: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Material Thickness: 0.016 INCHES NOMINAL IN. 6 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.