The Cock,shutoff,screw Stem, cataloged under National Stock Number 4820-01-428-9771, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Insinger Machine Co. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-428-9771 |
| Primary Part Number | D-2497 |
| Item Name | Cock,shutoff,screw Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Insinger Machine Co |
| Status | ACTIVE |
| Style Designator | STRAIGHT THRU |
| Media for Which Designed | AIR SINGLE RESPONSE |
| Valve Operation Method | MANUAL |
| 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 |
|---|---|
| SK-2839 IT-17 | Insinger Machine Co (USA) |
| D-2497 PRIMARY | Insinger Machine Co (USA) |
| Reference | Meaning |
|---|---|
| SK-2839 | D/9 Drawing number reference only Insinger Machine Co |
NSN 4820-01-428-9771 is a Cock,shutoff,screw Stem, manufactured by Insinger Machine Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-428-9771 has 2 manufacturer part numbers on file: SK-2839 IT-17 (Insinger Machine Co), D-2497 (Insinger Machine Co).
Key specifications for D-2497: Style Designator: STRAIGHT THRU; Special Features: VALVE SZ 0.250 IN. IN; Media for Which Designed: AIR SINGLE RESPONSE; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; INSINGER MACHINE CO DISHWASHER MODEL NO. 50-20N2-NSU(STANDARD). 3 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.