The Washer,lock, cataloged under National Stock Number 5310-00-121-7822, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-121-7822 |
| Primary Part Number | 1219A |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.318 INCHES NOMINAL IN |
| Material Thickness | 0.047 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.194 INCHES MINIMUM 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 |
|---|---|
| 1219A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 1219A | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 5310-00-121-7822 is a Washer,lock, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-121-7822 has 1 manufacturer part number on file: 1219A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
1 possible match (shared part number, not a government interchangeability claim): 4820-00-203-9364. Verify interchangeability with system specifications before substitution.
Key specifications for 1219A: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.318 INCHES NOMINAL IN; Material Thickness: 0.047 INCHES NOMINAL IN; Material: STEEL OVERALL. 5 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.