The Washer,spring Tension, cataloged under National Stock Number 5310-01-688-4605, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-688-4605 |
| Primary Part Number | 820-8225837 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.687 INCHES NOMINAL IN |
| Material Thickness | 0.034 INCHES NOMINAL IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.220 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 |
|---|---|
| MCB0687-034-S | Barnes Group Inc. (USA) |
| 9713K16 | Mcmaster-Carr Supply Co (USA) |
| 820-8225837 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5310-01-688-4605 is a Washer,spring Tension, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-688-4605 has 3 manufacturer part numbers on file: MCB0687-034-S (Barnes Group Inc.), 9713K16 (Mcmaster-Carr Supply Co), 820-8225837 (Naval Sea Systems Command).
Key specifications for 820-8225837: Overall Height: 0.050 INCHES NOMINAL IN; Style Designator: SPRING TENSION; Outside Diameter: 0.687 INCHES NOMINAL IN; Material Thickness: 0.034 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.