PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

63A6A1-500R0B21Resistor,fixed,wire Wound,nonind

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5905-00-944-2633 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-944-2633 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-944-2633. Primary manufacturer part number: 63A6A1-500R0B21.
Features
  • Resistor,fixed,wire Wound,nonind — FSC 5905
  • Electrical Resistance: 500.000 OHMS
  • Resistance Tolerance in Percent: -0.100 TO 0.100
  • Temp Range of Temp Coefficient in Deg Celsius: +26.0 TO 145.0
  • Ambient Temp in Deg Celsius at Zero Percent Rated Power: 135.0
  • Reliability Indicator: NOT ESTABLISHED
  • Temp Range of Temp Coefficient in Deg Celsius: -55.0 TO 25.0
  • Terminal Type: WIRE LEAD
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Circuit regulation and filtering
  • Signal conditioning
General Description

The Resistor,fixed,wire Wound,nonind, cataloged under National Stock Number 5905-00-944-2633, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5905-00-944-2633
Primary Part Number63A6A1-500R0B21
Item NameResistor,fixed,wire Wound,nonind
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Electrical Resistance500.000 OHMS
Resistance Tolerance in Percent-0.100 TO 0.100
Temp Range of Temp Coefficient in Deg Celsius+26.0 TO 145.0
Ambient Temp in Deg Celsius at Zero Percent Rated Power135.0
Reliability IndicatorNOT ESTABLISHED
Temp Range of Temp Coefficient in Deg Celsius-55.0 TO 25.0
Terminal TypeWIRE LEAD
Inclosure TypeENCAPSULATED
Ambient Temp at Full Rated Power125.0 CELSIUS DEGC
Body Diameter0.156 INCHES NOMINAL IN
Power Dissipation Rating in Watts0.050 FREE AIR
Body Length0.281 INCHES NOMINAL IN
Style DesignatorAXIAL TERMINAL EACH END
Temp Coefficient of Resistance in Ppm Per Deg Celsius-5.0 TO 5.0
Temp Coefficient of Resistance in Ppm Per Deg Celsius-8.0 TO 8.0
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-204-7691MRE9PK INTERCHANGEABLE
Connector,receptacle,electrical
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
4310-00-273-0323SM3 INTERCHANGEABLE
Ring,piston
Circor Naval Solutions Llc Dba Warren Pumps
3010-00-399-4399150104 INTERCHANGEABLE
Pin Set,coupling
Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division
5905-00-901-952564A6A11-5160R0A21 INTERCHANGEABLE
Resistor,fixed,wire Wound
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5905-00-903-691563A6A1-50000D21 INTERCHANGEABLE
Resistor,fixed,wire Wound
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5925-00-912-2769 INTERCHANGEABLE
Circuit Breaker
5925-00-912-2774 INTERCHANGEABLE
Circuit Breaker
5905-00-934-280563A1-10250B21 INTERCHANGEABLE
Resistor,fixed,wire Wound
Naval Air Warfare Center Aircraft Div
5905-00-939-054264A6A11-3583R0A21 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5905-00-940-940964A6A11-1011R0A21 INTERCHANGEABLE
Resistor,fixed,wire Wound
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
MWA8 Vishay Dale Electronics, Llc Div Vishay Americas (USA)
63A6A1-500R0B21 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
5S8A General Resistance Inc Sub of Prime Technology Inc (USA)
66238 Struthers-Dunn Inc. (USA)
SM3 Tanger Electronics a Div of Verit Industries (USA)
HR41 Shallcross Inc (USA)
5S8A Prime Technology Llc (USA)
R1474 Meggitt (new Hampshire), Inc (USA)
920P Kelvin Industries Inc (USA)
Related Parts
5935-00-204-7691INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
MRE9PK
4310-00-273-0323INTERCHANGEABLE
RING,PISTON
SM3
3010-00-399-4399INTERCHANGEABLE
PIN SET,COUPLING
150104
5905-00-901-9525INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
64A6A11-5160R0A21
5905-00-903-6915INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
63A6A1-50000D21
5925-00-912-2769INTERCHANGEABLE
CIRCUIT BREAKER
5925-00-912-2774INTERCHANGEABLE
CIRCUIT BREAKER
5905-00-934-2805INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
63A1-10250B21
5905-00-939-0542INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
64A6A11-3583R0A21
5905-00-940-9409INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
64A6A11-1011R0A21
3455-01-042-4840INTERCHANGEABLE
FILE,ROTARY
3010-01-548-2525INTERCHANGEABLE
UNIVERSAL JOINT,NONVEHICULAR
SM3

Frequently Asked Questions

What is NSN 5905-00-944-2633?

NSN 5905-00-944-2633 is a Resistor,fixed,wire Wound,nonind, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5905 (No Item Name Available). Status: active.

What are the part numbers for NSN 5905-00-944-2633?

NSN 5905-00-944-2633 has 9 cross-referenced part numbers: MWA8 (Vishay Dale Electronics, Llc Div Vishay Americas), 63A6A1-500R0B21 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 5S8A (General Resistance Inc Sub of Prime Technology Inc), 66238 (Struthers-Dunn Inc.), SM3 (Tanger Electronics a Div of Verit Industries) and 4 more.

What NSN replaces 5905-00-944-2633?

There are 12 known substitutes for 5905-00-944-2633: 5935-00-204-7691, 4310-00-273-0323, 3010-00-399-4399 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 63A6A1-500R0B21?

Key specifications for 63A6A1-500R0B21: Electrical Resistance: 500.000 OHMS; Resistance Tolerance in Percent: -0.100 TO 0.100; Temp Range of Temp Coefficient in Deg Celsius: +26.0 TO 145.0; Ambient Temp in Deg Celsius at Zero Percent Rated Power: 135.0. 15 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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