The Valve,foot, cataloged under National Stock Number 4820-01-331-6595, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-331-6595 |
| Primary Part Number | M1053-2.5IN. |
| Item Name | Valve,foot |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc |
| Status | ACTIVE |
| First End Bolt Hole Quantity | 6 |
| First End Flange Outside Diameter | 6.125 INCHES NOMINAL IN |
| First End Style Designator | PLAIN |
| First End Bolt Hole Diameter | 0.563 INCHES NOMINAL IN |
| First End Bolt Circle Diameter | 5.000 INCHES NOMINAL IN |
| End Connection Quantity | 1 |
| First End Connection Type | PLAIN FACE FLANGE |
| First End Flange Shape Style | ROUND W/ BOLT HOLES |
| Material | COPPER ALLOY BODY |
| 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 |
|---|---|
| M1053-2.5IN. PRIMARY | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| M87-C-500 | Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc (USA) |
| Reference | Meaning |
|---|---|
| M87-C-500 | 5/9 Secondary reference Derbyshire Machine & Tool Co |
| M1053-2.5IN. | 3/9 Design control — primary reference Derbyshire Machine & Tool Co |
NSN 4820-01-331-6595 is a Valve,foot, manufactured by Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-6595 has 2 manufacturer part numbers on file: M1053-2.5IN. (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc), M87-C-500 (Derbyshire Marine Products, Llc Dba Derbyshire Marine Products Llc).
Key specifications for M1053-2.5IN.: First End Bolt Hole Quantity: 6; First End Flange Outside Diameter: 6.125 INCHES NOMINAL IN; First End Style Designator: PLAIN; First End Bolt Hole Diameter: 0.563 INCHES NOMINAL IN. 9 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.