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Technical Data Sheet
PartsTable / COMPONENT / 303G
303G ✓ Verified by PartsTable
— · TAPERED BEARING
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

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include material: SILICON SEMICONDUCTOR, duty_type: CONTINUOUS, overall_width: 1.310 INCHES NOMINAL IN, overall_length: 3.180 INCHES NOMINAL IN, mounting_method: THREADED STUD(S), features_provided: HERMETICALLY SEALED CASE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8789, 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
303G
NSN: 3110-00-144-8789
FSC: 3110
CAGE: 39317 — MCGILL MANUFACTURING COMPANY INC USE CAGE CODE 92563 FOR CATALOGING. (USA)
SPECIFICATIONS
materialSILICON SEMICONDUCTOR
duty_typeCONTINUOUS
coil_quantity1
overall_width1.310 INCHES NOMINAL IN
overall_length3.180 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S)
winding_quantity2
features_providedHERMETICALLY SEALED CASE
nominal_thread_size0.250 INCHES IN
environmental_protectionHERMETIC
thread_series_designatorUNF
mounting_facility_quantity1
NSN3110-00-144-8789
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 303G · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
12J5Interchangeable
interchangeable cross-reference
interchangeable
304MInterchangeable
interchangeable cross-reference
interchangeable
43847Interchangeable
interchangeable cross-reference
interchangeable
700788Interchangeable
interchangeable cross-reference
interchangeable
DIT-255Interchangeable
interchangeable cross-reference
interchangeable
PD52414Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 303G?
303G is a RELAY,ELECTROMAGNETIC.
What parts can replace 303G?
There are 21 known substitutes for 303G: 12J5, 304M, 43847 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 303G?
303G is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-144-8789. 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