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Technical Data Sheet
4858 ✓ 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 TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include ringer_type: NONBIASED, gong_diameter: 2.938 INCHES IN, armature_adjustability: ADJUSTABLE, functional_description: RINGER,TELEPHONE,2.938 IN. DIA X 1.725 IN.

DEEP IN, mounting_configuration: TWO NO. 6-32 IN. DIA MTG HOLES,SPACED 2-5/8 IN.

C TO C 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 5977-00-065-5600, 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 4858
NSN: 5977-00-065-5600
FSC: 5977
CAGE: 55111 — SKIL CORP (USA)
SPECIFICATIONS
ringer_typeNONBIASED
gong_diameter2.938 INCHES IN
armature_adjustabilityADJUSTABLE
functional_descriptionRINGER,TELEPHONE,2.938 IN. DIA X 1.725 IN. DEEP IN
mounting_configurationTWO NO. 6-32 IN. DIA MTG HOLES,SPACED 2-5/8 IN. C TO C IN
NSN5977-00-065-5600
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN 4858 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
CONTACT FACE STYLE: CONCAVE
WIDTH: 0.433 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
LENGTH: 0.656 INCHES NOMINAL IN
RADIUS: 0.562 INCHES NOMINAL IN
PRESSURE SPRING TYPE AND QUANTITY: 1 CYLINDRICAL
TERMINAL TYPE AND QUANTITY: 1 ROUND CAP
BODY STYLE: RECTANGULAR COMMUTATOR
THICKNESS: 0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CONTACT FACE STYLECONCAVE
WIDTH0.433 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
LENGTH0.656 INCHES NOMINAL IN
RADIUS0.562 INCHES NOMINAL IN
PRESSURE SPRING TYPE AND QUANTITY1 CYLINDRICAL
TERMINAL TYPE AND QUANTITY1 ROUND CAP
BODY STYLERECTANGULAR COMMUTATOR
THICKNESS0.248 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
SPRING FREE LENGTH1.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONUNITED STATES GRAPHITE CO,GRADE 235 MFR REF 1ST MATERIAL RESPONSE AND MORGANITE INC,GRADE EG801 MFR REF 2ND MATERIAL RESPONSE AND UNION CARBIDE CORP,GRADE F35 MFR REF 3RD MATERIAL RESPONSE AND GGENERAL CARBON CO,GRADE XB MFR REF 4TH MATERIAL RESPONSE AND STACKPOLE CARBON CO,GRADE 124 MFR REF 5TH MATERIAL RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
485-8Interchangeable
interchangeable cross-reference
interchangeable
485-13Interchangeable
interchangeable cross-reference
interchangeable
2023980Interchangeable
interchangeable cross-reference
interchangeable
MC131Interchangeable
interchangeable cross-reference
interchangeable
60533-060Interchangeable
interchangeable cross-reference
interchangeable
K15-350ADPC84Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4858?
4858 is a TRANSFORMER,AUDIO FREQUENCY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4858?
There are 10 known substitutes for 4858: 485-8, 485-13, 2023980 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4858?
4858 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5977-00-065-5600. This indicates validated use in U.S. government and defense supply chains.
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