The Washer,key, cataloged under National Stock Number 5310-01-012-2049, 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 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-012-2049 |
| Primary Part Number | 742327 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| External Prebent Key Length | 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Criticality Code Justification | FEAT |
| Material Document and Classification | AMS5040 ASSN STD 1ST MATERIAL RESPONSE OR AMS5042 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.140 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN |
| External Prebent Key Width | 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Material | STEEL COMP 1010 OVERALL |
| Hole Diameter | 2.657 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 742327 | Rtx Corporation Div Pratt & Whitney (USA) |
| 742327 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 742327 | 5/9 Secondary reference Dynamic Gunver Technologies Llc |
| 742327 | 5/9 Secondary reference Paradigm Manchester Inc. Dba Pursuit Aerospace |
NSN 5310-01-012-2049 is a Washer,key, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-012-2049 has 2 manufacturer part numbers on file: 742327 (Rtx Corporation Div Pratt & Whitney), 742327 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 742327: External Prebent Key Length: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Criticality Code Justification: FEAT; Material Document and Classification: AMS5040 ASSN STD 1ST MATERIAL RESPONSE OR AMS5042 ASSN STD 2ND MATERIAL RESPONSE OVERALL; Outside Diameter: 3.140 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN. 7 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.