The Locknut,valve, cataloged under National Stock Number 5310-01-067-3643, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Tyco Fire Products Lp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-067-3643 |
| Primary Part Number | 20-03381 |
| Item Name | Locknut,valve |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Tyco Fire Products Lp |
| Status | ACTIVE |
| General Characteristics Item Description | BRONZE QQ-P-330A A |
| 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 |
|---|---|
| 20-03381 PRIMARY | Tyco Fire Products Lp (USA) |
| V-3381 | Tyco Fire Products Lp (USA) |
| Reference | Meaning |
|---|---|
| V-5446PIECE7 | C/1 Advisory reference — outside the item-of-supply concept Tyco Fire Products Lp |
| V-3281 | D/9 Drawing number reference only Tyco Fire Products Lp |
| V3381 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-067-3643 is a Locknut,valve, manufactured by Tyco Fire Products Lp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-067-3643 has 2 manufacturer part numbers on file: 20-03381 (Tyco Fire Products Lp), V-3381 (Tyco Fire Products Lp).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-067-3644, 4820-01-185-2297, 6145-01-212-0269. Verify interchangeability with system specifications before substitution.
Key specifications for 20-03381: General Characteristics Item Description: BRONZE QQ-P-330A A; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT. 1 specification is 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.