PartsTable
Technical Data Sheet
PartsTable / MRO / U-4
U-4 ✓ Verified by PartsTable
Middle Atlantic Products · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

Steel construction, black powder coat finish. Key specifications include phase: THREE, length: 1.125 INCHES NOMINAL IN, diameter: 0.125 INCHES NOMINAL IN, material: COPPER ALLOY TERMINALS, body_style: BARRIER TYPE, body_length: 0.375 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-140-3041, 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→ U-4
NSN: 3455-00-140-3041
FSC: 3455
CAGE: 97308 — ATRAX-NEWCARB CORP (USA)
SPECIFICATIONS
phaseTHREE
length1.125 INCHES NOMINAL IN
diameter0.125 INCHES NOMINAL IN
materialCOPPER ALLOY TERMINALS
body_styleBARRIER TYPE
body_length0.375 INCHES NOMINAL IN
design_typeUNIVERSAL
shaft_styleROUND
current_typeAC
power_sourceELECTRIC MOTOR
shaft_length2.375 INCHES NOMINAL IN
usage_designPROTECTIVE COVER FOR ELECTRICAL RELAY
NSN3455-00-140-3041
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Middle Atlantic Products RESISTOR,VARIABLE,NONWIRE WOUND, TITLE COMPONENT PN U-4 MFR Middle Atlantic Products RESISTOR,VARIABLE,NONW
KEY FEATURES
•
CUTTER TOOTH STYLE DESIGNATOR: C1
•
STYLE DESIGNATOR: CONE SHAPE
•
MATERIAL: TUNGSTEN CARBIDE
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND A STYLE AND 1 SIZE AND B CLASS
•
CUTTER TOOTH SHAPING METHOD: GROUND FROM SOLID
•
OVERALL DIAMETER: 0.125 INCHES NOMINAL IN
•
CUTTING SURFACE LENGTH: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CUTTER TOOTH STYLE DESIGNATORC1
STYLE DESIGNATORCONE SHAPE
MATERIALTUNGSTEN CARBIDE
NONDEFINITIVE SPEC/STD DATA2 TYPE AND A STYLE AND 1 SIZE AND B CLASS
CUTTER TOOTH SHAPING METHODGROUND FROM SOLID
OVERALL DIAMETER0.125 INCHES NOMINAL IN
CUTTING SURFACE LENGTH0.375 INCHES NOMINAL IN
SPECIAL FEATURES8 DEG INCLUDED ANGLE OF CONE
DIAMETER0.125 INCHES NOMINAL IN
CUTTER TOOTH CUT STYLEMEDIUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
88-17850Interchangeable
interchangeable cross-reference
interchangeable
H48MInterchangeable
interchangeable cross-reference
interchangeable
736-003716Interchangeable
interchangeable cross-reference
interchangeable
GGG-F-00340Interchangeable
interchangeable cross-reference
interchangeable
HG48MInterchangeable
interchangeable cross-reference
interchangeable
TCR-223-DCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is U-4?
U-4 is a RESISTOR,VARIABLE,NONWIRE WOUND, manufactured by Middle Atlantic Products. It is classified as a MRO (MRO_GENERAL).
What parts can replace U-4?
There are 33 known substitutes for U-4: 88-17850, H48M, 736-003716 and 30 more. Substitute compatibility should be verified for your specific system.
Is U-4 still available?
U-4 is currently cancelled.
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Last verified: July 2026