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Technical Data Sheet
PartsTable / MRO / 28013
28013 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BLOCK,TELEPHONE PROTECTOR is a the manufacturer industrial component. Key specifications include shape: RECTANGULAR, material: STEEL COMP 4130 OVERALL, body_style: BARRIER TYPE, cone_width: 1.1830 INCHES NOMINAL IN, teeth_type: SPUR, usage_design: USED IN TELEPHONE CIRCUITS FOR PROTECTION AGAINST LIGHTNING OR HIGH VOLTAGE SURGES. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-100-3115, 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→ 28013
NSN: 3110-00-100-3115
FSC: 3110
CAGE: 30076 — HYSTER-YALE GROUP, INC. (USA)
SPECIFICATIONS
shapeRECTANGULAR
materialSTEEL COMP 4130 OVERALL
body_styleBARRIER TYPE
cone_width1.1830 INCHES NOMINAL IN
teeth_typeSPUR
usage_designUSED IN TELEPHONE CIRCUITS FOR PROTECTION AGAINST LIGHTNING OR HIGH VOLTAGE SURGES
bore_diameter2.5000 INCHES NOMINAL IN
overall_width0.370 INCHES NOMINAL IN
base_thickness0.391 INCHES IN
overall_length5.120 INCHES NOMINAL IN
teeth_quantity61
voltage_rating120.000 VOLTS NOMINAL
NSN3110-00-100-3115
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 28013 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONE CORNER RADIUS: 0.1406 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NORMAL ANGLE
•
CONE WIDTH: 1.1830 INCHES NOMINAL IN
•
BORE DIAMETER: 2.5000 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CONE CORNER RADIUS0.1406 INCHES NOMINAL IN
STYLE DESIGNATORNORMAL ANGLE
CONE WIDTH1.1830 INCHES NOMINAL IN
BORE DIAMETER2.5000 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
308B308FInterchangeable
interchangeable cross-reference
interchangeable
3-9306Interchangeable
interchangeable cross-reference
interchangeable
308B5Interchangeable
interchangeable cross-reference
interchangeable
137350Interchangeable
interchangeable cross-reference
interchangeable
451084-1Interchangeable
interchangeable cross-reference
interchangeable
7717-6DAPBLACKInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28013?
28013 is a BLOCK,TELEPHONE PROTECTOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 28013?
There are 28 known substitutes for 28013: 308B308F, 3-9306, 308B5 and 25 more. Substitute compatibility should be verified for your specific system.
Is 28013 still available?
28013 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026