PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28138Resistor,variable,wire Wound,non

Ohmite Holding, L.l.c. Dba Ohmite Manufacturing · NSN 5905-00-549-1656 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-549-1656 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-549-1656. Primary manufacturer part number: 28138.
Features
  • Resistor,variable,wire Wound,non — FSC 5905
  • Reliability Indicator: NOT ESTABLISHED
  • Screw Thread Series Designator: UNEF
  • Actuator Type: SINGLE SHAFT
  • Shaft Length: 0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
  • Electrical Resistance Per Section: 100.000 OHMS SINGLE SECTION
  • Power Dissipation Rating Per Section in Watts: 12.0 FREE AIR SINGLE SECTION
  • Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power: 85.0 SINGLE SECTION
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Circuit regulation and filtering
  • Signal conditioning
General Description

The Resistor,variable,wire Wound,non, cataloged under National Stock Number 5905-00-549-1656, is classified within Federal Supply Class 5905 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ohmite Holding, L.l.c. Dba Ohmite Manufacturing. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5905-00-549-1656
Primary Part Number28138
Item NameResistor,variable,wire Wound,non
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerOhmite Holding, L.l.c. Dba Ohmite Manufacturing
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Screw Thread Series DesignatorUNEF
Actuator TypeSINGLE SHAFT
Shaft Length0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN
Electrical Resistance Per Section100.000 OHMS SINGLE SECTION
Power Dissipation Rating Per Section in Watts12.0 FREE AIR SINGLE SECTION
Ambient Temp in Deg Celsius Per Section at Zero Percent Rated Power85.0 SINGLE SECTION
Terminal Type and Quantity3 TAB, SOLDER LUG
Terminal LocationREAR END LOCATION NOT OTHERWISE SPECIFIED
Ambient Temp in Deg Celsius Per Section at Full Rated Power40.0 SINGLE SECTION
Resistance Tolerance Per Section in Percent-10.0 TO 10.0 SINGLE SECTION
Mounting MethodSTANDARD BUSHING
Section Quantity1
Shaft Diameter0.250 INCHES NOMINAL IN
Body Diameter1.719 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN
Body StyleCYLINDRICAL BUSHING MOUNTED
Shaft StyleROUND, SLOTTED
Overall Diameter1.719 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN
Mounting Bushing Length0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
Screw Thread Quantity Per Inch32.0
Screw Thread Diameter0.375 INCHES NOMINAL IN
Body Length1.594 INCHES MINIMUM AND 1.656 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5905-00-578-4122 INTERCHANGEABLE
Resistor,variable,wire Wound,non
2990-00-829-498228138 INTERCHANGEABLE
Muffler,exhaust
Stewart & Stevenson Power Products Llc
5330-00-894-8259N28138 INTERCHANGEABLE
Gasket
Leslie Controls, Inc. Dba Leslie Controls Inc
5330-00-912-7196 INTERCHANGEABLE
Gasket
5330-01-270-8336 INTERCHANGEABLE
Gasket
5120-01-505-434428138 INTERCHANGEABLE
Crowfoot Attachment,socket Wrenc
Wta Tool Llc
Cross-Reference Index
Part NumberManufacturer
28138 Ohmite Holding, L.l.c. Dba Ohmite Manufacturing (USA)
AR7500 Superior Electric Holding Group Llc Div Specialty Product Technologies (USA)
Related Parts
5905-00-578-4122INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
2990-00-829-4982INTERCHANGEABLE
MUFFLER,EXHAUST
28138
5330-00-894-8259INTERCHANGEABLE
GASKET
N28138
5330-00-912-7196INTERCHANGEABLE
GASKET
5330-01-270-8336INTERCHANGEABLE
GASKET
5120-01-505-4344INTERCHANGEABLE
CROWFOOT ATTACHMENT,SOCKET WRENC
28138

Frequently Asked Questions

What is NSN 5905-00-549-1656?

NSN 5905-00-549-1656 is a Resistor,variable,wire Wound,non, manufactured by Ohmite Holding, L.l.c. Dba Ohmite Manufacturing, classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-549-1656?

NSN 5905-00-549-1656 has 2 cross-referenced part numbers: 28138 (Ohmite Holding, L.l.c. Dba Ohmite Manufacturing), AR7500 (Superior Electric Holding Group Llc Div Specialty Product Technologies).

What NSN replaces 5905-00-549-1656?

There are 6 known substitutes for 5905-00-549-1656: 5905-00-578-4122, 2990-00-829-4982, 5330-00-894-8259 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28138?

Key specifications for 28138: Reliability Indicator: NOT ESTABLISHED; Screw Thread Series Designator: UNEF; Actuator Type: SINGLE SHAFT; Shaft Length: 0.969 INCHES MINIMUM AND 1.031 INCHES MAXIMUM IN. 23 total characteristics are documented in the Federal Logistics Information System.

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