The Washer,key, cataloged under National Stock Number 5310-00-209-3271, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rockford Powertrain Inc Div Powertrain Rockford, Inc.. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-209-3271 |
| Primary Part Number | PT948 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rockford Powertrain Inc Div Powertrain Rockford, Inc. |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 1.500 INCHES NOMINAL IN |
| External Prebent Key Length | 0.187 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.500 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Key Quantity | 1 |
| External Prebent Key Width | 0.281 INCHES NOMINAL IN |
| Material | STEEL COMP 1020 OVERALL |
| Hole Diameter | 1.781 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 |
|---|---|
| PT948 PRIMARY | Rockford Powertrain Inc Div Powertrain Rockford, Inc. (USA) |
| 5192840 | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 5192840 | 5/9 Secondary reference General Motors Corp |
| 5192840 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 5310-00-209-3271 is a Washer,key, manufactured by Rockford Powertrain Inc Div Powertrain Rockford, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-209-3271 has 2 manufacturer part numbers on file: PT948 (Rockford Powertrain Inc Div Powertrain Rockford, Inc.), 5192840 (Rolls-Royce Solutions America Inc).
Key specifications for PT948: Distance From Centerline to Inside of Prebent Key: 1.500 INCHES NOMINAL IN; External Prebent Key Length: 0.187 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.