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Noninductive Wire Wound Fixed Resistor

NSN: 5905-00-001-2920 | Model: A2550-5-000KP0RM

Inc 37404 reinstated on 010303~a resistor whose ohmic value cannot be adjusted or varied. The resistance element consists of high resistance wire (or ribbon) either wound on an insulated form or constructed so as to be self-supporting. The items must have inherent characteristics of inducing little or no self-inductance. Opposition to current flow is an inherent property of the resistance wire and is manifested by the heat dissipation in the resistor. Excludes suppressor, ignition interference. See also resistor (1), fixed, wire wound, inductive.

NSN Properties and Flags
NATO Stock Number
Tempurature Coefficient Of Resistance In Ppm Per Deg Celsius
Electrical Resistance
4.990 kilohms
Resistance Tolerance In Percent
-1.000 to 1.000
Ambient Tempurature In Deg Celsius At Full Rated Power
Ambient Tempurature In Deg Celsius At Zero Percent Rated Power
Tempurature Range Of Tempurature Coefficient In Deg Celsius
Inclosure Method
Terminal Type
Wire lead
Reliability Indicator
Reliability Failure Rate Level In Percent
Terminal Length
1.500 inches
Body Diameter
0.250 inches
Body Length
0.500 inches
Power Dissipation Rating In Watts
0.150 free air
Cubic Measure (non-core)
0.024 cubic inches
Unpackaged Unit Weight
2.0 grams
Style Designator
Axial terminal each end
Test Data Document
81349-mil-r-39005 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Specification Data
81349-mil-r-39005/4 government specification

Inventory Check

The last inventory check on this NSN was done on 05/24/2021. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 145
  • New: 759
  • As Removed: 1
  • Serviceable: 1
  • Overhauled: 1

Pricing and Availability

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NSN 5905-00-001-2920 Datasheet

Supply Class (FSC):
Cross Reference:
  • A2550-5-000KP0RM
  • LR312-5K1PCT
  • RBR55L50000FP
  • RBR55L49900FR
  • MIL-R-39005/4
  • A2550-5000OHMPORM1PCT
  • A2550-5-000K-P0R
  • 9197759
  • 908C966-3
  • 208A50000F
  • MAW5-49900HMSP0RM1PCT
  • 50114-6
  • 30556-6
  • 1250-49760HMSP0RM1PCT
  • WWA24X002B50000F
  • 908C966-3
Cage Codes:
  • R Inc Cal (CAGE 14193)
  • Jordan Electric Co (CAGE 22045)
  • Military Specifications (CAGE 81349)
  • Avox Systems Inc. (CAGE 53655)
  • Chevron Research Co (CAGE 96004)
  • U S Army Aviation and Missile (CAGE 18876)
  • Hamilton Sundstrand Corporation (CAGE 99167)
  • International Resistive Company Inc. (CAGE 11502)
  • Custom Electronics, Inc. (CAGE 23280)
  • The Dewey Electronics Corporation (CAGE 47496)
  • Meggitt (new Hampshire), Inc (CAGE 58880)
  • Vishay Dale Electronics, Llc (CAGE 91637)
  • Sundstrand Corp (CAGE 83843)
  • 5905-00-001-2920 replaces 5905-00-432-0149
  • 5905-00-001-2920 replaces 5905-00-450-3012
  • 5905-00-001-2920 replaces 5905-00-812-2533
Schedule B & Trade:
  • Schedule B: 8533390080 (NAICS 334416)

    Wirewound variable resistors, nesoi

  • SITC: 77233

    Wirewound electrical variable resistors (including rheostats and potentiometers)

  • End Use: 20005

    Electric apparatus


N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.


A - Item does not contain precious metal.


A - No known electrostatic discharge (esd) or electromagnetic interference (emi) sensitivity.


- Represents items with no adp components


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    062960 - Reostats/parts noi

  • TCC:

    3 - Electrostatic sensitive device (esd)

  • WCC:

    658 - Electrical appliances, small

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • LTL:

    P - 77.5

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $74.40 to $124.00..
Does NSN 5905-00-001-2920 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Air Force, Department Of The Navy, Poland, Brazil, Spain, Australia, and Turkey
What is the NIIN of NSN 5905-00-001-2920?
000012920 or 00-001-2920
Does NSN 5905-00-001-2920 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5905-00-001-2920?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Sep 22, 1972