The Cock,drain, cataloged under National Stock Number 4820-01-643-5330, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-643-5330 |
| Primary Part Number | 4921K34 |
| Item Name | Cock,drain |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Nominal Pipe Size Accommodated | 0.375 INCHES ALL ENDS IN |
| Supplementary Features | MATERIAL: BODY IS BRASS; HEIGHT: 1.25 INCHES; TEMPERATURE RANGE: -65 DEGREES F TO 250 DEGREES F; MAXIMUM PRESSURE: 150 PSI AT 250 DEGREES F; WING-NUT HANDLE - EXTERNAL SEAL; CONNECTION: NPT MALE; OUTER CONNECTION VENTED TO ATMOSPHERE; USE FOR WATER AND OIL ONLY IN |
| Style Designator | STRAIGHT THRU |
| Operating Pressure | 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Maximum Operating Temp | 250.0 FAHRENHEIT SINGLE RESPONSE DEGF |
| 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 |
|---|---|
| 4921K34 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 4820-01-643-5330 is a Cock,drain, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-643-5330 has 1 manufacturer part number on file: 4921K34 (Mcmaster-Carr Supply Co).
Key specifications for 4921K34: Nominal Pipe Size Accommodated: 0.375 INCHES ALL ENDS IN; Supplementary Features: MATERIAL: BODY IS BRASS; HEIGHT: 1.25 INCHES; TEMPERATURE RANGE: -65 DEGREES F TO 250 DEGREES F; MAXIMUM PRESSURE: 150 PSI AT 250 DEGREES F; WING-NUT HANDLE - EXTERNAL SEAL; CONNECTION: NPT MALE; OUTER CONNECTION VENTED TO ATMOSPHERE; USE FOR WATER AND OIL ONLY IN; Style Designator: STRAIGHT THRU; Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 6 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.