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D539 — FILTER,RADIO FREQUENCY INTERFERE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

D539: FILTER,RADIO FREQUENCY INTERFERE.

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: STEEL OVERALL, head_style: BRAZIER, shank_style: TAPERED HOLLOW, overall_length: 1.5000 INCHES NOMINAL IN, shank_diameter: 0.142 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN, fastener_length: 0.906 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-120-4200, 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
D539
NSN: 3110-00-120-4200
NIINs: 001204200, 011434190
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 51665 — RIVINIUS INC LITTLEFORD MACHINERY DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleBRAZIER
shank_styleTAPERED HOLLOW
overall_length1.5000 INCHES NOMINAL IN
shank_diameter0.142 INCHES MINIMUM AND 0.146 INCHES MAXIMUM IN
fastener_length0.906 INCHES NOMINAL IN
special_featuresROLLER TYPE: SOLID
surface_treatmentCADMIUM OVERALL
head_major_diameter0.312 INCHES NOMINAL IN
overall_outside_diameter1.3120 INCHES NOMINAL IN
NSN3110-00-120-4200
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: D539 · 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: 1.3120 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL LENGTH1.5000 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER1.3120 INCHES NOMINAL IN
SPECIAL FEATURESROLLER TYPE: SOLID
SUBSTITUTES & CROSS-REFERENCES 9
27009HReference document
Same NSN cross-reference
Reference document — Secondary reference
RA99000Reference document
Same NSN cross-reference
Reference document — Secondary reference
BB7120AReference document
Same NSN cross-reference
Reference document — Secondary reference
001-27960Reference document
Same NSN cross-reference
Reference document — Secondary reference
A42226XReference document
Same NSN cross-reference
Reference document — Secondary reference
67AX135Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D539?
D539 is a FILTER,RADIO FREQUENCY INTERFERE.
What parts can replace D539?
There are 9 known substitutes for D539: 27009H, RA99000, BB7120A and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D539?
D539 is cataloged in the U.S. Government catalog under NSN 3110-00-120-4200. 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.