The Washer,spring Tension, cataloged under National Stock Number 5310-01-049-1750, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-049-1750 |
| Primary Part Number | PM22485-1 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Outside Diameter | 1.224 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN |
| Material Thickness | 0.019 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 |
|---|---|
| PM22485-1 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| PM22485-1 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
| PM22485-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-049-1750 is a Washer,spring Tension, manufactured by Unison Industries Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-049-1750 has 1 manufacturer part number on file: PM22485-1 (Unison Industries Llc).
Key specifications for PM22485-1: Overall Height: 0.115 INCHES MINIMUM IN; Outside Diameter: 1.224 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN; Material Thickness: 0.019 INCHES NOMINAL IN. 2 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.