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3039-20 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

3039-20: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include unit_type: TRANSMISSION LINETRANSMISSION LINE, design_type: BIDIRECTIONALBIDIRECTIONAL, usage_design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING, bore_diameter: 1.8750 INCHES NOMINAL IN, overall_width: 5.125 INCHES NOMINAL5.125 INCHES NOMINAL IN, alignment_type: RIGID. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-277-0649, 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
3039-20
NSN: 3110-00-277-0649
NIINs: 002770649, 004784307
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
unit_typeTRANSMISSION LINETRANSMISSION LINE
design_typeBIDIRECTIONALBIDIRECTIONAL
usage_designMAIN LINE AND SECONDARY LINE TERMINAL FITTING
bore_diameter1.8750 INCHES NOMINAL IN
overall_width5.125 INCHES NOMINAL5.125 INCHES NOMINAL IN
alignment_typeRIGID
overall_height2.125 INCHES NOMINAL2.125 INCHES NOMINAL IN
overall_length8.141 INCHES NOMINAL8.141 INCHES NOMINAL IN
identifying_numberTERMINAL FITTING TYPE N
fsc_application_dataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENTANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
power_loss_in_decibels20.0
radio_frequency_rating125.0 MEGAHERTZ MINIMUM AND 125.0 MEGAHERTZ MINIMUM AND 250.0 MEGAHERTZ MAXIMUM250.0 MEGAHERTZ MAXIMUM
NSN3110-00-277-0649
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 3039-20 · 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
•
OVERALL OUTSIDE DIAMETER: 2.4380 INCHES NOMINAL IN
•
ALIGNMENT TYPE: RIGID
•
STANDARD TOLERANCE DESIGNATION: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
•
BORE DIAMETER: 1.8750 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL OUTSIDE DIAMETER2.4380 INCHES NOMINAL IN
ALIGNMENT TYPERIGID
STANDARD TOLERANCE DESIGNATIONAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
BORE DIAMETER1.8750 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
M030Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3039-20?
3039-20 is a BEARING,ROLLER,NEEDLE.
What parts can replace 3039-20?
There is 1 known substitute for 3039-20: M030. Substitute compatibility should be verified for your specific system.
What is the NSN for 3039-20?
3039-20 is cataloged in the U.S. Government catalog under NSN 3110-00-277-0649. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.