The Washer,lock, cataloged under National Stock Number 5310-01-566-0428, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Velan Valve Corp.. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-566-0428 |
| Primary Part Number | 560-14078-550 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Velan Valve Corp. |
| Status | ACTIVE |
| Material Document and Classification | ASTM B265 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | TITANIUM 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 |
|---|---|
| 560-14078-550 PRIMARY | Velan Valve Corp. (USA) |
| HMM11-2A-001-12X-10 PRIMARY | Velan Valve Corp. (USA) |
| Reference | Meaning |
|---|---|
| HMM11-2A-001 | D/9 Drawing number reference only Velan Valve Corp. |
| HMM11-2A-001-8XX-10 | 5/9 Secondary reference Velan Valve Corp. |
NSN 5310-01-566-0428 is a Washer,lock, manufactured by Velan Valve Corp., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-566-0428 has 2 manufacturer part numbers on file: 560-14078-550 (Velan Valve Corp.), HMM11-2A-001-12X-10 (Velan Valve Corp.).
Key specifications for 560-14078-550: Material Document and Classification: ASTM B265 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: GRADE 2; NHA: VALVE CHECK ILN 12.00IPS 150PSI CRSBLT ALBRZ; End Item Identification: CVN 77; Material: TITANIUM OVERALL. 2 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.