NSN 4820-00-933-0734 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-933-0734. Manufacturer of record part number: 50005-01.
General Characteristics Item Description: C/O 1 COPPER BULB,11.500 IN. LG,0.750 IN. DIA; 1 STEEL MTG DISK,5.000 IN. DIA,0.625 IN. THK,4 MTG HOLES;1 COPPER LINE,10.000 IN. LG;1 HOUSING;1 BELLOWS IN
1 manufacturer part number on file
Manufacturer of record: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Identification
NSN: 4820-00-933-0734
NIIN: 009330734
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 50005-01
Manufacturer: Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
General Description
The Thermo Assembly, cataloged under National Stock Number 4820-00-933-0734, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-00-933-0734
Primary Part Number
50005-01
Item Name
Thermo Assembly
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
Status
ACTIVE
General Characteristics Item Description
C/O 1 COPPER BULB,11.500 IN. LG,0.750 IN. DIA; 1 STEEL MTG DISK,5.000 IN. DIA,0.625 IN. THK,4 MTG HOLES;1 COPPER LINE,10.000 IN. LG;1 HOUSING;1 BELLOWS IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-049-1409POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
Possible match (shared part number)
5905-01-061-1214POSSIBLE MATCH
RESISTOR,VARIABLE,WIRE WOUND,NON
Possible match (shared part number)
1630-01-121-31405000501POSSIBLE MATCH
PIN,RETURN
Possible match (shared part number)Meggitt Aircraft Braking Systems Corporation
5985-01-173-940390BX859POSSIBLE MATCH
WAVEGUIDE ASSEMBLY
Possible match (shared part number)Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc
4320-01-178-9606POSSIBLE MATCH
SLEEVE,SHAFT,PUMP
Possible match (shared part number)
5975-01-546-9426500050-1POSSIBLE MATCH
PANEL,ELECTRICAL-ELECTRONIC EQUI
Possible match (shared part number)Frontier Electronic Systems Corp
7025-01-551-2686500501POSSIBLE MATCH
DISPLAY UNIT
Possible match (shared part number)Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA)
Reference documents
Reference
Meaning
5005-01
5/9Secondary reference
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
1227D2
5/9Secondary reference
Lawler Manufacturing Company, Inc.
Related Parts
4820-01-049-1409POSSIBLE MATCH
REGULATOR,THERMOSTATIC TEMPERATU
5905-01-061-1214POSSIBLE MATCH
RESISTOR,VARIABLE,WIRE WOUND,NON
1630-01-121-3140POSSIBLE MATCH
PIN,RETURN
5000501
5985-01-173-9403POSSIBLE MATCH
WAVEGUIDE ASSEMBLY
90BX859
4320-01-178-9606POSSIBLE MATCH
SLEEVE,SHAFT,PUMP
5975-01-546-9426POSSIBLE MATCH
PANEL,ELECTRICAL-ELECTRONIC EQUI
500050-1
7025-01-551-2686POSSIBLE MATCH
DISPLAY UNIT
500501
Frequently Asked Questions
What is NSN 4820-00-933-0734?
NSN 4820-00-933-0734 is a Thermo Assembly, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-933-0734?
NSN 4820-00-933-0734 has 1 manufacturer part number on file: 50005-01 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
What NSN replaces 4820-00-933-0734?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-049-1409, 5905-01-061-1214, 1630-01-121-3140. Verify interchangeability with system specifications before substitution.
What are the specifications of 50005-01?
Key specifications for 50005-01: General Characteristics Item Description: C/O 1 COPPER BULB,11.500 IN. LG,0.750 IN. DIA; 1 STEEL MTG DISK,5.000 IN. DIA,0.625 IN. THK,4 MTG HOLES;1 COPPER LINE,10.000 IN. LG;1 HOUSING;1 BELLOWS IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-00-933-0734 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.