The Washer,spring Tension, cataloged under National Stock Number 5310-01-218-4561, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Danfoss Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-218-4561 |
| Primary Part Number | 161-80155 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Danfoss Inc |
| Status | ACTIVE |
| Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| Style Designator | SPRING TENSION |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Material Thickness | 0.008 INCHES NOMINAL IN |
| Material | STEEL COMP 1075 OVERALL |
| Hole Diameter | 0.330 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 |
|---|---|
| 161-80155 PRIMARY | Danfoss Inc (USA) |
| Reference | Meaning |
|---|---|
| 161-80155 | 3/9 Design control — primary reference Danfoss Fluid Power Inc Racine Opn |
NSN 5310-01-218-4561 is a Washer,spring Tension, manufactured by Danfoss Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-218-4561 has 1 manufacturer part number on file: 161-80155 (Danfoss Inc).
Key specifications for 161-80155: Overall Height: 0.060 INCHES NOMINAL IN; Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM; Style Designator: SPRING TENSION; Outside Diameter: 0.500 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.