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21WB1-1580 — RESISTOR,VARIABLE,WIRE WOUND,PRE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

21WB1-1580: RESISTOR,VARIABLE,WIRE WOUND,PRE.

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include body_style: CYLINDRICAL BUSHING MOUNTED, body_length: 0.715 INCHES MAXIMUM IN, shaft_style: ROUND, shaft_length: 0.875 INCHES NOMINAL IN, actuator_type: DOUBLE ENDED SHAFT, body_diameter: 1.312 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5905-00-968-4471, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 21WB1-1580
NSN: 5905-00-968-4471
FSC: 5905 — Resistor
CAGE: 19176 — SERVO INSTRUMENT CORPORATION (USA)
SPECIFICATIONS
body_styleCYLINDRICAL BUSHING MOUNTED
body_length0.715 INCHES MAXIMUM IN
shaft_styleROUND
shaft_length0.875 INCHES NOMINAL IN
actuator_typeDOUBLE ENDED SHAFT
body_diameter1.312 INCHES MAXIMUM IN
overall_length2.090 INCHES NOMINAL IN
shaft_diameter0.2497 INCHES NOMINAL IN
mounting_methodSTANDARD BUSHING
overall_diameter1.500 INCHES NOMINAL IN
section_quantity1
features_providedNONMETALLIC SHAFT
NSN5905-00-968-4471
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,PRE TITLE COMPONENT PN 21WB1-1580 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
MAXIMUM RUNNING TORQUE: 0.50 INCH-OUNCES IN
•
NONTURN DEVICE LOCATION: AT 12 OCLOCK
•
BODY DIAMETER: 1.312 INCHES MAXIMUM IN
•
SCREW THREAD QUANTITY PER INCH: 32.0
•
ELECTRICAL RESISTANCE PER SECTION: 5.0 KILOHMS SINGLE SECTION
•
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER: 145.0 SINGLE SECTION
•
SECTION QUANTITY: 1
•
SHAFT DIAMETER: 0.2497 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
MAXIMUM RUNNING TORQUE0.50 INCH-OUNCES IN
NONTURN DEVICE LOCATIONAT 12 OCLOCK
BODY DIAMETER1.312 INCHES MAXIMUM IN
SCREW THREAD QUANTITY PER INCH32.0
ELECTRICAL RESISTANCE PER SECTION5.0 KILOHMS SINGLE SECTION
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER145.0 SINGLE SECTION
SECTION QUANTITY1
SHAFT DIAMETER0.2497 INCHES NOMINAL IN
NONTURN DEVICE RADIUS0.562 INCHES NOMINAL IN
FUNCTION CHARACTERISTIC PER SECTIONSINGLE SECTION LINEAR
SUBSTITUTES & CROSS-REFERENCES 1
100-8027Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21WB1-1580?
21WB1-1580 is a RESISTOR,VARIABLE,WIRE WOUND,PRE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21WB1-1580?
There is 1 known substitute for 21WB1-1580: 100-8027. Substitute compatibility should be verified for your specific system.
What is the NSN for 21WB1-1580?
21WB1-1580 is cataloged in the U.S. Government catalog under NSN 5905-00-968-4471. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.