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1857856 — RESISTOR,VARIABLE,WIRE WOUND,PRE

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

1857856: RESISTOR,VARIABLE,WIRE WOUND,PRE.

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include body_style: CYLINDRICAL SERVO MOUNTED, body_length: 1.750 INCHES MAXIMUM IN, shaft_style: ROUND, bearing_type: BALL SHAFT, pilot_length: 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN, shaft_length: 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5905-00-708-0891, 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→ 1857856
NSN: 5905-00-708-0891
FSC: 5905 — Resistor
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
body_styleCYLINDRICAL SERVO MOUNTED
body_length1.750 INCHES MAXIMUM IN
shaft_styleROUND
bearing_typeBALL SHAFT
pilot_length0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN
shaft_length0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM IN
shaft_runout0.001 INCHES IN
actuator_typeSINGLE SHAFT
body_diameter0.875 INCHES NOMINAL IN
lateral_runout0.002 INCHES IN
overall_length2.406 INCHES NOMINAL IN
pilot_diameter0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
NSN5905-00-708-0891
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,WIRE WOUND,PRE TITLE COMPONENT PN 1857856 MFR RESISTOR,VARIABLE,WIRE
KEY FEATURES
•
MAXIMUM RUNNING TORQUE: 0.60 INCH-OUNCES IN
•
BODY DIAMETER: 0.875 INCHES NOMINAL IN
•
LATERAL RUNOUT: 0.002 INCHES IN
•
ELECTRICAL RESISTANCE PER SECTION: 20.000 KILOHMS SINGLE SECTION
•
MOUNTING LIP DEPTH: 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN
•
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER: 80.0 SINGLE SECTION
•
UNDERCUT WIDTH: 0.0570 INCHES MINIMUM IN
•
SECTION QUANTITY: 1
TECHNICAL CHARACTERISTICS
MAXIMUM RUNNING TORQUE0.60 INCH-OUNCES IN
BODY DIAMETER0.875 INCHES NOMINAL IN
LATERAL RUNOUT0.002 INCHES IN
ELECTRICAL RESISTANCE PER SECTION20.000 KILOHMS SINGLE SECTION
MOUNTING LIP DEPTH0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN
AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER80.0 SINGLE SECTION
UNDERCUT WIDTH0.0570 INCHES MINIMUM IN
SECTION QUANTITY1
SHAFT DIAMETER0.125 INCHES NOMINAL IN
UNDERCUT DIAMETER0.781 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
500-8440Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1857856?
1857856 is a RESISTOR,VARIABLE,WIRE WOUND,PRE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1857856?
There is 1 known substitute for 1857856: 500-8440. Substitute compatibility should be verified for your specific system.
What is the NSN for 1857856?
1857856 is cataloged in the U.S. Government catalog under NSN 5905-00-708-0891. 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.