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PartsTable / COMPONENT / 45-121
45-121 ✓ Verified by PartsTable
— · COMPONENT
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

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include material: STEEL OVERALL, body_style: BUSHING MOUNT, body_width: 1.025 INCHES MAXIMUM IN, core_depth: 0.375 INCHES NOMINAL IN, face_width: 0.312 INCHES NOMINAL IN, head_style: PAN NO. 2.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-050-7939, 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
45-121
NSN: 5365-00-050-7939
FSC: 5365
CAGE: 5RQL2 — DRS ENVIRONMENTAL SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_styleBUSHING MOUNT
body_width1.025 INCHES MAXIMUM IN
core_depth0.375 INCHES NOMINAL IN
face_width0.312 INCHES NOMINAL IN
head_stylePAN NO. 2
ring_styleCONCENTRIC
tooth_typeINTEGRAL
body_height1.250 INCHES MAXIMUM IN
body_length1.346 INCHES MAXIMUM IN
design_typeMAINSPRING W/AUXILIARY LEAF
head_height0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
NSN5365-00-050-7939
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,FIXED,WIRE WOUND,INDUCT TITLE COMPONENT PN 45-121 MFR RESISTOR,FIXED,WIRE WO
KEY FEATURES
•
CORE DEPTH: 0.375 INCHES NOMINAL IN
•
THREAD LENGTH: 0.105 INCHES NOMINAL EXTERNAL IN
•
THREAD SERIES DESIGNATOR: UNF EXTERNAL
•
STYLE DESIGNATOR: PLUG, MACHINE
•
BODY CORE DIAMETER: 0.281 INCHES NOMINAL IN
•
THREAD CLASS: 2A EXTERNAL A
•
NOMINAL THREAD SIZE: 0.438 INCHES EXTERNAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CORE DEPTH0.375 INCHES NOMINAL IN
THREAD LENGTH0.105 INCHES NOMINAL EXTERNAL IN
THREAD SERIES DESIGNATORUNF EXTERNAL
STYLE DESIGNATORPLUG, MACHINE
BODY CORE DIAMETER0.281 INCHES NOMINAL IN
THREAD CLASS2A EXTERNAL A
OVERALL LENGTH0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.438 INCHES EXTERNAL IN
THREAD DIRECTIONRIGHT-HAND EXTERNAL
CONNECTION STYLEPLAIN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
45121Interchangeable
interchangeable cross-reference
interchangeable
43321Interchangeable
interchangeable cross-reference
interchangeable
B94.19 TABLE 49Interchangeable
interchangeable cross-reference
interchangeable
1278531-1Interchangeable
interchangeable cross-reference
interchangeable
B107.37 TY2CL1Interchangeable
interchangeable cross-reference
interchangeable
7014622-32Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 45-121?
45-121 is a RESISTOR,FIXED,WIRE WOUND,INDUCT.
What parts can replace 45-121?
There are 13 known substitutes for 45-121: 45121, 43321, B94.19 TABLE 49 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 45-121?
45-121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5365-00-050-7939. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026