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FB121-1 — RELAY,ELECTROMAGNETIC

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

FB121-1: RELAY,ELECTROMAGNETIC.

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: COPPER CONTACT, bore_shape: STRAIGHT, bore_diameter: 11.00 MILLIMETERS NOMINAL MM, overall_width: 7.0 MILLIMETERS NOMINAL MM, load_direction: RADIAL, surface_finish: GROUND. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-554-6152, 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→ FB121-1
NSN: 3110-00-554-6152
NIINs: 005546152, 013623420
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 21760 — SCHATZ BEARING CORPORATION DBA SCHATZ BEARING CORP (USA)
SPECIFICATIONS
materialCOPPER CONTACT
bore_shapeSTRAIGHT
bore_diameter11.00 MILLIMETERS NOMINAL MM
overall_width7.0 MILLIMETERS NOMINAL MM
load_directionRADIAL
surface_finishGROUND
style_designatorCOUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
voltage_in_volts250.0
features_providedALIGNING RING
overall_outside_diameter32.00 MILLIMETERS NOMINAL MM
terminal_type_and_quantity2 SCREW
fuse_accommodation_quantity1
NSN3110-00-554-6152
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: FB121-1 · 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
•
RETAINER FABRICATION METHOD: PRESSED
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: COUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
•
OVERALL OUTSIDE DIAMETER: 32.00 MILLIMETERS NOMINAL MM
•
FEATURES PROVIDED: ALIGNING RING
•
BORE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORCOUNTERBORED OUTER RING, MAGNETO TYPE, S EPARABLE
OVERALL WIDTH7.0 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER32.00 MILLIMETERS NOMINAL MM
FEATURES PROVIDEDALIGNING RING
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
SUBSTITUTES & CROSS-REFERENCES 7
NP12-11-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
FF-B-171B SUPP 1 TYPE 132 GR00Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
FB11Reference document
Same NSN cross-reference
Reference document — Secondary reference
E11Reference document
Same NSN cross-reference
Reference document — Secondary reference
319696-580Reference document
Same NSN cross-reference
Reference document — Secondary reference
504902-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FB121-1?
FB121-1 is a RELAY,ELECTROMAGNETIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace FB121-1?
There are 7 known substitutes for FB121-1: NP12-11-1, FF-B-171B SUPP 1 TYPE 132 GR00, FB11 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FB121-1?
FB121-1 is cataloged in the U.S. Government catalog under NSN 3110-00-554-6152. 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.