NSN 4820-01-663-0678 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-663-0678. Manufacturer of record part number: 4921K1.
Also searched as4820-01-663-0678 ·
4820016630678 ·
NIIN 016630678 ·
01-663-0678 ·
FSC 4820 Valves, Nonpowered · CAGE 39428 · 4921K1
Nominal Pipe Size Accommodated: 0.125 INCHES FIRST END IN
Minimum Operating Temp: -65.0 FAHRENHEIT DEGF
Connection Type: THREADED EXTERNAL PIPE FIRST END
Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Maximum Operating Temp: 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
Thread Series Designator: NPT FIRST END
Identification
NSN: 4820-01-663-0678
NIIN: 016630678
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 4921K1
Manufacturer: Mcmaster-Carr Supply Co
General Description
The Cock,drain, cataloged under National Stock Number 4820-01-663-0678, 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 8 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.
Technical Specifications
Parameter
Value
NSN
4820-01-663-0678
Primary Part Number
4921K1
Item Name
Cock,drain
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Mcmaster-Carr Supply Co
Status
ACTIVE
Furnished Items and Quantity
1 HANDLE
Nominal Pipe Size Accommodated
0.125 INCHES FIRST END IN
Minimum Operating Temp
-65.0 FAHRENHEIT DEGF
Connection Type
THREADED EXTERNAL PIPE FIRST END
Operating Pressure
150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-663-0678?
NSN 4820-01-663-0678 is a Cock,drain, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-663-0678?
NSN 4820-01-663-0678 has 1 manufacturer part number on file: 4921K1 (Mcmaster-Carr Supply Co).
What are the specifications of 4921K1?
Key specifications for 4921K1: Furnished Items and Quantity: 1 HANDLE; Nominal Pipe Size Accommodated: 0.125 INCHES FIRST END IN; Minimum Operating Temp: -65.0 FAHRENHEIT DEGF; Connection Type: THREADED EXTERNAL PIPE FIRST END. 8 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-663-0678 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.