The Cock,plug, cataloged under National Stock Number 4820-00-790-9930, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Lincoln Brass Works Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-00-790-9930 |
| Primary Part Number | 5992-2 |
| Item Name | Cock,plug |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Lincoln Brass Works Inc |
| Status | ACTIVE |
| Connection Style | PLAIN, OPTIONAL END (PIPE) ALL ENDS |
| Connection Type | THREADED INTERNAL PIPE ALL ENDS |
| Flow Style | THREE-WAY TWO PORT 90 DEGREE PLUG TURN |
| Thread Direction | RIGHT-HAND ALL ENDS |
| Nominal Thread Size | 0.250 INCHES ALL ENDS IN |
| Mounting Facility | BRACKET(S) |
| Material | COPPER ALLOY BODY |
| Material | COPPER ALLOY FLOW CONTROL DEVICE |
| Material | STEEL STEM |
| Material | COPPER ALLOY SEAT |
| Thread Series Designator | NPT ALL ENDS |
| 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 |
|---|---|
| 5992-2 PRIMARY | Lincoln Brass Works Inc (USA) |
| Reference | Meaning |
|---|---|
| 01471 | 5/9 Secondary reference Warwick Electronics Inc Pacific Mercury Div |
NSN 4820-00-790-9930 is a Cock,plug, manufactured by Lincoln Brass Works Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-790-9930 has 1 manufacturer part number on file: 5992-2 (Lincoln Brass Works Inc).
3 possible matches (shared part number, not a government interchangeability claim): 5355-00-920-2500, 5330-01-392-6704, 6520-01-530-5473. Verify interchangeability with system specifications before substitution.
Key specifications for 5992-2: Connection Style: PLAIN, OPTIONAL END (PIPE) ALL ENDS; Connection Type: THREADED INTERNAL PIPE ALL ENDS; Flow Style: THREE-WAY TWO PORT 90 DEGREE PLUG TURN; Thread Direction: RIGHT-HAND ALL ENDS. 12 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.