PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20138Heater Cap Assembly

Mesa Microwave Inc. · NSN 5840-01-047-2701 · FSC 5840 · No Item Name Available
Verified by PartsTable
NSN 5840-01-047-2701 — this item is cataloged by the U.S. Government under National Stock Number 5840-01-047-2701. Primary manufacturer part number: 20138.
Features
  • Heater Cap Assembly — FSC 5840
  • 2 verified cross-references
  • Primary manufacturer: Mesa Microwave Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Heater Cap Assembly, cataloged under National Stock Number 5840-01-047-2701, is classified within Federal Supply Class 5840 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Mesa Microwave Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameHeater Cap Assembly
FSC / FSG5840 — No Item Name Available (FSG 58)
ManufacturersMesa Microwave Inc. (CAGE 06868); Raytheon Company Div Rmd Strategic (CAGE 05869)
Technical Specifications
ParameterValue
NSN5840-01-047-2701
Primary Part Number20138
Item NameHeater Cap Assembly
FSC / FSG5840 / 58 — No Item Name Available
ManufacturerMesa Microwave Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5133-00-228-1385 INTERCHANGEABLE
Drill,twist
5133-00-232-8161 INTERCHANGEABLE
Drill,twist
1650-00-364-652220138 INTERCHANGEABLE
Seat Assembly,valve
Pneudraulics, Inc.
5133-00-412-1748 INTERCHANGEABLE
Drill,twist
5930-00-557-6238SMB342717 INTERCHANGEABLE
Switch,push
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6125-00-613-841220138 INTERCHANGEABLE
Motor-Generator
Hyundai Ideal Electric Co.
1005-00-798-099420-138 INTERCHANGEABLE
Control Box Panel a
Cyclohm Motor Corp
4820-01-071-881420138R51SS INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-131-022920138C51SS CDS A15750 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-131-764820138H01S0030 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
Cross-Reference Index
Part NumberManufacturer
20138 PRIMARY Mesa Microwave Inc. (USA)
5041-376 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5133-00-228-1385INTERCHANGEABLE
DRILL,TWIST
5133-00-232-8161INTERCHANGEABLE
DRILL,TWIST
1650-00-364-6522INTERCHANGEABLE
SEAT ASSEMBLY,VALVE
20138
5133-00-412-1748INTERCHANGEABLE
DRILL,TWIST
5930-00-557-6238INTERCHANGEABLE
SWITCH,PUSH
SMB342717
6125-00-613-8412INTERCHANGEABLE
MOTOR-GENERATOR
20138
1005-00-798-0994INTERCHANGEABLE
CONTROL BOX PANEL A
20-138
4820-01-071-8814INTERCHANGEABLE
VALVE,SAFETY RELIEF
20138R51SS
4820-01-131-0229INTERCHANGEABLE
VALVE,SAFETY RELIEF
20138C51SS CDS A15750
4820-01-131-7648INTERCHANGEABLE
VALVE,SAFETY RELIEF
20138H01S0030
4820-01-142-3188INTERCHANGEABLE
VALVE,SAFETY RELIEF
20385A01E0210
4820-01-192-9561INTERCHANGEABLE
VALVE,SAFETY RELIEF
9456-G-41

Frequently Asked Questions

What is NSN 5840-01-047-2701?

NSN 5840-01-047-2701 is a Heater Cap Assembly, manufactured by Mesa Microwave Inc., classified under FSC 5840 (No Item Name Available). Status: active.

What are the part numbers for NSN 5840-01-047-2701?

NSN 5840-01-047-2701 has 2 cross-referenced part numbers: 20138 (Mesa Microwave Inc.), 5041-376 (Raytheon Company Div Rmd Strategic).

What NSN replaces 5840-01-047-2701?

There are 12 known substitutes for 5840-01-047-2701: 5133-00-228-1385, 5133-00-232-8161, 1650-00-364-6522 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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