The Washer,key, cataloged under National Stock Number 5310-00-274-9236, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-274-9236 |
| Primary Part Number | 72-2331-104 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fairbanks Morse, Llc |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.125 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.500 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.187 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Straight Key Width | 0.250 INCHES NOMINAL IN |
| External Key Quantity | 10 |
| Internal Prebent Key Length | 0.125 INCHES NOMINAL IN |
| Hole Diameter | 0.765 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 |
|---|---|
| 72-2331-104 PRIMARY | Fairbanks Morse, Llc (USA) |
| 72-23310-104 PRIMARY | Fairbanks Morse, Llc (USA) |
| 228-63PC33 PRIMARY | Fairbanks Morse, Llc (USA) |
| 228-64PC33 PRIMARY | Fairbanks Morse, Llc (USA) |
| Reference | Meaning |
|---|---|
| 72-23310-104 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 228-63PC33 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 72-2331-104 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
| 228-64PC33 | 5/9 Secondary reference Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco |
NSN 5310-00-274-9236 is a Washer,key, manufactured by Fairbanks Morse, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-274-9236 has 4 manufacturer part numbers on file: 72-2331-104 (Fairbanks Morse, Llc), 72-23310-104 (Fairbanks Morse, Llc), 228-63PC33 (Fairbanks Morse, Llc), 228-64PC33 (Fairbanks Morse, Llc).
Key specifications for 72-2331-104: Internal Prebent Key Width: 0.125 INCHES NOMINAL IN; Overall Distance Including Keys: 1.500 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-N-281 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.