The Washer,lock, cataloged under National Stock Number 5310-01-494-0149, 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 4 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-494-0149 |
| Primary Part Number | A 1229S4179 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| Special Test Features | INCLUDES 26-X-1002 SETSCREW |
| Outside Diameter | 4.750 INCHES NOMINAL IN |
| Major Thickness | 0.23 INCHES NOMINAL IN |
| Hole Diameter | 3.29 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 |
|---|---|
| A 1229S4179 PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1229-S-4179 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
| A1229-S-4179 | 5/9 Secondary reference Meritor Industrial Products, Llc |
| AS1229-S-4179 | 5/9 Secondary reference Meritor Industrial Products, Llc |
NSN 5310-01-494-0149 is a Washer,lock, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-494-0149 has 1 manufacturer part number on file: A 1229S4179 (Meritor Heavy Vehicle Systems, Llc).
Key specifications for A 1229S4179: Special Test Features: INCLUDES 26-X-1002 SETSCREW; Outside Diameter: 4.750 INCHES NOMINAL IN; Major Thickness: 0.23 INCHES NOMINAL IN; Special Features: ITEM WEIGHT: 0.51LBS PER PACK LBS. 4 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.