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121990 — ACCESSORY KIT,ANTENNA

✓ Government record, cited
Hama · TAPERED BEARING
PRODUCT OVERVIEW

121990: ACCESSORY KIT,ANTENNA.

- Allows you to connect electrical appliances in countries with other socket systems - Adapts from German sockets with earth contact to US plugs type A + B - White designer housing with an integrated blue LED light - For the following countries: Germany, Spain, France, Austria, Russia, Turkey, Netherlands, Belgium, Poland, Hungary, Sweden, Norway, Czech Republic - For devices from: the USA, Canada, Japan, Brazil This part is cataloged in the U.S. Government catalog under NSN 3110-00-100-0355, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
121990
NSN: 3110-00-100-0355
NIINs: 001000355, 017292686
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_width0.7500 INCHES NOMINAL IN
outside_diameter2.7500 INCHES NOMINAL IN
style_designatorNORMAL ANGLE
backface_corner_radius0.0469 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 2
NSN3110-00-100-0355
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 121990 · Hama ⚠ 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
•
STYLE DESIGNATOR: NORMAL ANGLE
•
OUTSIDE DIAMETER: 2.7500 INCHES NOMINAL IN
•
BACKFACE CORNER RADIUS: 0.0469 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 2
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORNORMAL ANGLE
OVERALL WIDTH0.7500 INCHES NOMINAL IN
OUTSIDE DIAMETER2.7500 INCHES NOMINAL IN
BACKFACE CORNER RADIUS0.0469 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 2
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 7
103S14Reference document
Same NSN cross-reference
Reference document — Secondary reference
2523Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
302677Reference document
Same NSN cross-reference
Reference document — Secondary reference
FS4030Reference document
Same NSN cross-reference
Reference document — Secondary reference
535667Reference document
Same NSN cross-reference
Reference document — Secondary reference
21386Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 121990?
121990 is a ACCESSORY KIT,ANTENNA manufactured by Hama.
What parts can replace 121990?
There are 7 known substitutes for 121990: 103S14, 2523, 302677 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121990?
121990 is cataloged in the U.S. Government catalog under NSN 3110-00-100-0355. 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.