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Technical Data Sheet
PartsTable / MRO / 4644
4644 ✓ Verified by PartsTable
Zyxel · 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

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include width: 1.000 INCHES MAXIMUM IN, length: 3.000 INCHES MAXIMUM IN, material: COPPER ALLOY, body_style: RECTANGULAR SHAPE, bore_shape: STRAIGHT, head_style: HEXAGON. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2454, 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→ 4644
NSN: 3110-00-198-2454
FSC: 3110
CAGE: 99557 — GUNNEBO JOHNSON CORPORATION DIV GUNNEBO INDUSTRIES, INC. (USA)
SPECIFICATIONS
width1.000 INCHES MAXIMUM IN
length3.000 INCHES MAXIMUM IN
materialCOPPER ALLOY
body_styleRECTANGULAR SHAPE
bore_shapeSTRAIGHT
head_styleHEXAGON
shell_typeSOLID
body_length0.875 INCHES NOMINAL IN
head_height0.281 INCHES NOMINAL IN
thread_class2A A
body_diameter0.312 INCHES NOMINAL IN
bore_diameter2.5000 INCHES NOMINAL IN
NSN3110-00-198-2454
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 4644 · Zyxel ⚠ 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
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
•
BORE SHAPE: STRAIGHT
•
BORE DIAMETER: 2.5000 INCHES NOMINAL IN
•
OVERALL OUTSIDE DIAMETER: 3.0000 INCHES NOMINAL IN
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: SOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
BORE SHAPESTRAIGHT
BORE DIAMETER2.5000 INCHES NOMINAL IN
SPECIAL FEATURESOIL HOLE AND OIL GROOVE
OVERALL OUTSIDE DIAMETER3.0000 INCHES NOMINAL IN
SURFACE FINISHGROUND
STYLE DESIGNATORSOLID INNER RACE, WITH BORE CHAMFER, JOURNAL AND NEEDLE
MATERIALSTEEL OVERALL
OVERALL WIDTH1.7500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
70-1322Interchangeable
interchangeable cross-reference
interchangeable
4644Interchangeable
interchangeable cross-reference
interchangeable
13X422Interchangeable
interchangeable cross-reference
interchangeable
DT10FInterchangeable
interchangeable cross-reference
interchangeable
1X529Interchangeable
interchangeable cross-reference
interchangeable
30121C100-20Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4644?
4644 is a RESISTOR,FIXED,WIRE WOUND,INDUCT manufactured by Zyxel. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4644?
There are 19 known substitutes for 4644: 70-1322, 4644, 13X422 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4644?
4644 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-198-2454. 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