The Washer,lock, cataloged under National Stock Number 5310-01-570-8648, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is D & D Machinery & Sales Inc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-570-8648 |
| Primary Part Number | A10172 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | D & D Machinery & Sales Inc |
| Status | ACTIVE |
| Outside Diameter | 0.487 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Material | STEEL COMP 316 OVERALL |
| Hole Diameter | 0.260 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 |
|---|---|
| A10172 PRIMARY | D & D Machinery & Sales Inc (USA) |
NSN 5310-01-570-8648 is a Washer,lock, manufactured by D & D Machinery & Sales Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-570-8648 has 1 manufacturer part number on file: A10172 (D & D Machinery & Sales Inc).
Key specifications for A10172: Outside Diameter: 0.487 INCHES NOMINAL IN; Material Thickness: 0.062 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT; Material: STEEL COMP 316 OVERALL. 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.