The Washer,lock, cataloged under National Stock Number 5310-01-553-7669, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Appleton Marine Inc. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-553-7669 |
| Primary Part Number | AMD-1740-137 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Appleton Marine Inc |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| AMD-1740-137 PRIMARY | Appleton Marine Inc (USA) |
| AMD-1740 ITEM 137 | Appleton Marine Inc (USA) |
NSN 5310-01-553-7669 is a Washer,lock, manufactured by Appleton Marine Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-553-7669 has 2 manufacturer part numbers on file: AMD-1740-137 (Appleton Marine Inc), AMD-1740 ITEM 137 (Appleton Marine Inc).
Key specifications for AMD-1740-137: Special Features: DIAMETER:0.44IN IN; Part Name Assigned by Controlling Agency: (INAVY)WASHER, FLAT; End Item Identification: CRANE ASSY FLDG BOOM FB30-27; Material: STEEL CORROSION RESISTING OVERALL. 1 specification is 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.