PartsTable
Technical Data Sheet
R121 ✓ Verified by PartsTable
· 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

The RESISTOR ASSEMBLY is a the manufacturer industrial component. Key specifications include handle_type: TEE, reamer_type: REPAIRMANS TAPER, flute_design: STRAIGHT, overall_width: 2.312 INCHES NOMINAL IN, terminal_type: TAB, SOLDER LUG, component_name: VARIABLE WIRE WOUND RESISTOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5905-00-440-1569, 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 R121
NSN: 5905-00-440-1569
FSC: 5905
CAGE: 77260 — PIERCE CO INC THE SUB OF AVIS INDUSTRIAL CORP (USA)
SPECIFICATIONS
handle_typeTEE
reamer_typeREPAIRMANS TAPER
flute_designSTRAIGHT
overall_width2.312 INCHES NOMINAL IN
terminal_typeTAB, SOLDER LUG
component_nameVARIABLE WIRE WOUND RESISTOR
overall_height2.719 INCHES NOMINAL IN
overall_length4.406 INCHES NOMINAL IN
mounting_methodBRACKET(S)
special_features3/8 IN. SQ HEAD FOR USE WITH SOCKET WRENCH IN
terminal_quantity6
component_quantity2
NSN5905-00-440-1569
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR ASSEMBLY TITLE COMPONENT PN R121 MFR RESISTOR ASSEMBLY
KEY FEATURES
COMPONENT NAME: VARIABLE WIRE WOUND RESISTOR
COMPONENT IDENTIFYING NUMBER: R121 PART NO.
COMPONENT QUANTITY: 2
TERMINAL TYPE: TAB, SOLDER LUG
MOUNTING METHOD: BRACKET(S)
COMPONENT RELATIONSHIP: MATCHED TO EACH OTHER
TECHNICAL CHARACTERISTICS (FLIS)
COMPONENT NAMEVARIABLE WIRE WOUND RESISTOR
COMPONENT IDENTIFYING NUMBERR121 PART NO.
OVERALL WIDTH2.312 INCHES NOMINAL IN
COMPONENT QUANTITY2
TERMINAL TYPETAB, SOLDER LUG
OVERALL HEIGHT2.719 INCHES NOMINAL IN
MOUNTING METHODBRACKET(S)
COMPONENT RELATIONSHIPMATCHED TO EACH OTHER
OVERALL LENGTH4.406 INCHES NOMINAL IN
ASSEMBLY CONSTRUCTION METHODMOUNTED BETWEEN U-BRACKETS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
17236Interchangeable
interchangeable cross-reference
interchangeable
R121Interchangeable
interchangeable cross-reference
interchangeable
E5041Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R121?
R121 is a RESISTOR ASSEMBLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace R121?
There are 3 known substitutes for R121: 17236, R121, E5041. Substitute compatibility should be verified for your specific system.
What is the NSN for R121?
R121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5905-00-440-1569. This indicates validated use in U.S. government and defense supply chains.
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