The Washer,lock, cataloged under National Stock Number 5310-01-035-0380, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Pti Technologies Inc.. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-035-0380 |
| Primary Part Number | 52-10819 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Pti Technologies Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | FLAT INTERNAL TEETH |
| Outside Diameter | 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN |
| Material Thickness | 0.018 INCHES NOMINAL0.018 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.146 INCHES NOMINAL0.146 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 |
|---|---|
| 52-10819 PRIMARY | Pti Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 52-10819 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-035-0380 is a Washer,lock, manufactured by Pti Technologies Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-035-0380 has 1 manufacturer part number on file: 52-10819 (Pti Technologies Inc.).
Key specifications for 52-10819: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN; Material Thickness: 0.018 INCHES NOMINAL0.018 INCHES NOMINAL IN. 7 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.