PartsTable
Technical Data Sheet
PartsTable / MRO / B4-1
B4-1 ✓ 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

RESISTOR NETWORK,FIXED,WIRE WOUN. Key specifications include material: FIBER AND RUBBER AND FIBER SYNTHETIC AND RUBBER CHLOROPRENE CLASS CR AND RUBBER SYNTHETIC BODY, body_length: 2.625 INCHES NOMINAL IN, construction: ONE-PIECE, body_diameter: 1.250 INCHES NOMINAL IN, terminal_type: PIN, overall_length: 1.344 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-129-5716, 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→ B4-1
NSN: 3455-00-129-5716
FSC: 3455
CAGE: 89925 — ALTEC INDUSTRIES INC EASTERN DIV (USA)
SPECIFICATIONS
materialFIBER AND RUBBER AND FIBER SYNTHETIC AND RUBBER CHLOROPRENE CLASS CR AND RUBBER SYNTHETIC BODY
body_length2.625 INCHES NOMINAL IN
constructionONE-PIECE
body_diameter1.250 INCHES NOMINAL IN
terminal_typePIN
overall_length1.344 INCHES IN
inclosure_methodENCASED
outside_diameter0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
overall_diameter0.781 INCHES IN
performance_typeSTANDARD CAPACITY
style_designatorPLAIN
aperture_diameter0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN
NSN3455-00-129-5716
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR NETWORK,FIXED,WIRE WOUN TITLE COMPONENT PN B4-1 MFR RESISTOR NETWORK,FIXED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
26139Interchangeable
interchangeable cross-reference
interchangeable
2815000741929Interchangeable
interchangeable cross-reference
interchangeable
52141Interchangeable
interchangeable cross-reference
interchangeable
PC5100104Interchangeable
interchangeable cross-reference
interchangeable
B4-1Interchangeable
interchangeable cross-reference
interchangeable
S2830Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B4-1?
B4-1 is a RESISTOR NETWORK,FIXED,WIRE WOUN. It is classified as a MRO (MRO_GENERAL).
What parts can replace B4-1?
There are 23 known substitutes for B4-1: 26139, 2815000741929, 52141 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B4-1?
B4-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3455-00-129-5716. 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