The Washer,lock, cataloged under National Stock Number 5310-01-685-5219, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Metric and Multistandard Components Corp. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Metric and Multistandard Components Corp (CAGE 15526) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-685-5219 |
| Primary Part Number | DIN127BA4M8 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Metric and Multistandard Components Corp |
| Status | ACTIVE |
| 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 |
|---|---|
| DIN127BA4M8 PRIMARY | Metric and Multistandard Components Corp (USA) |
| Reference | Meaning |
|---|---|
| 43183 FIND NO. 9 | C/1 Advisory reference — outside the item-of-supply concept United States Department of the Navy Dba Naval Surface Warfare Center Panama City |
| 43183 | D/9 Drawing number reference only United States Department of the Navy Dba Naval Surface Warfare Center Panama City |
| DIN127BA4M8 | 5/1 Secondary reference Metric Bolt & Nut Co, Inc. of South Carolina Dba Metric Bolt & Nut Co. Inc. |
NSN 5310-01-685-5219 is a Washer,lock, manufactured by Metric and Multistandard Components Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-685-5219 has 1 manufacturer part number on file: DIN127BA4M8 (Metric and Multistandard Components Corp).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-685-6826, 5310-01-685-6841. Verify interchangeability with system specifications before substitution.
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.