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Technical Data Sheet
PartsTable / COMPONENT / E4877G1
E4877G1 ✓ Verified by PartsTable
— · BALL BEARING
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

The FUSEHOLDER SUBASSEMBLY is a the manufacturer industrial component. Key specifications include base_style: FOUR PIN INDEXING, bulb_style: T ("U" SHAPED TUBULAR), bulb_diameter: 1.100 INCHES NOMINAL IN, overall_width: 2.000 INCHES MAXIMUM IN, conductor_form: STRANDED ALL CONDUCTORS, inclosure_type: FULLY INCLOSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-337-6992, 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
E4877G1
NSN: 3120-00-337-6992
FSC: 3120
CAGE: 11349 — CENTURY ELECTRIC INC (USA)
SPECIFICATIONS
base_styleFOUR PIN INDEXING
bulb_styleT ("U" SHAPED TUBULAR)
bulb_diameter1.100 INCHES NOMINAL IN
overall_width2.000 INCHES MAXIMUM IN
conductor_formSTRANDED ALL CONDUCTORS
inclosure_typeFULLY INCLOSED
overall_height2.750 INCHES MAXIMUM IN
overall_length5.800 INCHES NOMINAL IN
voltage_rating100.000 VOLTS NOMINAL
wattage_rating18.000 WATTS
bulb_designatorT-4
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
NSN3120-00-337-6992
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: E4877G1 · OEM ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
1287-5Interchangeable
interchangeable cross-reference
interchangeable
1286-5Interchangeable
interchangeable cross-reference
interchangeable
ST5M1324-001Interchangeable
interchangeable cross-reference
interchangeable
24-0682-00Interchangeable
interchangeable cross-reference
interchangeable
2S5012Interchangeable
interchangeable cross-reference
interchangeable
012865Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E4877G1?
E4877G1 is a FUSEHOLDER SUBASSEMBLY.
What parts can replace E4877G1?
There are 12 known substitutes for E4877G1: 1287-5, 1286-5, ST5M1324-001 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E4877G1?
E4877G1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3120-00-337-6992. 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