Valve, Relief, Pressure and Temper4820-01-644-3281
NSN 4820-01-644-3281 · NIIN 016443281 · Part number 50020121-06
Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 3FC08
Government record, cited
NSN 4820-01-644-3281 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-644-3281. Manufacturer of record part number: 50020121-06.
Manufacturer of record: Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc
Identification
NSN: 4820-01-644-3281
NIIN: 016443281
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 50020121-06
Manufacturer: Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc
General Description
The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-644-3281, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Catalog Facts
Item Name
Valve,relief,pressure and Temper
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Manufacturers
Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc (CAGE 3FC08)
Technical Specifications
Parameter
Value
NSN
4820-01-644-3281
Primary Part Number
50020121-06
Item Name
Valve,relief,pressure and Temper
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc
Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc (USA)
Reference documents
Reference
Meaning
50020121
D/9Drawing number reference only
Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
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 4820-01-644-3281?
NSN 4820-01-644-3281 is a Valve,relief,pressure and Temper, manufactured by Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-644-3281?
NSN 4820-01-644-3281 has 1 manufacturer part number on file: 50020121-06 (Cm Automotive Systems Group, Llc Dba Cm Automotive Systems Group, Llc).
Is NSN 4820-01-644-3281 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.