The Washer,spring Tension, cataloged under National Stock Number 5310-00-678-9519, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-678-9519 |
| Primary Part Number | 271851 |
| Item Name | Washer,spring Tension |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 5542 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.700 INCHES MINIMUM AND 3.710 INCHES MAXIMUM IN |
| Material Thickness | 0.039 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN |
| Surface Treatment | CHROMIUM OVERALL |
| Material | NICKEL ALLOY X-750 OVERALL |
| Hole Diameter | 3.500 INCHES MINIMUM 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 |
|---|---|
| 271851 | Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring (USA) |
| 271851 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 271851 | 5/2 Secondary reference U.S. Government activity |
| 271851 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5310-00-678-9519 is a Washer,spring Tension, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-678-9519 has 2 manufacturer part numbers on file: 271851 (Dcp Spring Acquisition Company, Inc. Dba New England Spring Div New England Spring), 271851 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 271851: Overall Height: 0.120 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2406 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM; Material Document and Classification: AMS 5542 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 8 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.