The Washer,key, cataloged under National Stock Number 5310-00-333-7166, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-333-7166 |
| Primary Part Number | 1229W23 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.768 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.187 INCHES NOMINAL IN |
| Heat Treatment | AS FABRICATED |
| Style Designator | KEY |
| Material Document and Classification | ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.750 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Material Thickness | 0.065 INCHES NOMINAL IN |
| Internal Prebent Key Length | 0.247 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 1.656 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 |
|---|---|
| 1229W23 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| 285483 | General Motors Llc Dba General Motors Llc (USA) |
| 11EHT68 | Mack Trucks Inc Parts Opn (USA) |
| 1229W23 | Meritor Industrial Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 285483 | 5/9 Secondary reference General Motors Corp |
| 90061 | 5/9 Secondary reference White Motor Corp |
| 11A7788 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-333-7166 is a Washer,key, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-333-7166 has 4 manufacturer part numbers on file: 1229W23 (Meritor Heavy Vehicle Systems, Llc), 285483 (General Motors Llc Dba General Motors Llc), 11EHT68 (Mack Trucks Inc Parts Opn), 1229W23 (Meritor Industrial Products, Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5930-01-202-6236, 5340-01-370-9555, 1680-01-476-4637. Verify interchangeability with system specifications before substitution.
Key specifications for 1229W23: Distance From Centerline to Inside of Prebent Key: 0.768 INCHES NOMINAL IN; Internal Prebent Key Width: 0.187 INCHES NOMINAL IN; Heat Treatment: AS FABRICATED; Style Designator: KEY. 12 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.