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PartsTable / COMPONENT / G4-128
G4-128 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The LEVER,EMERGENCY RESERVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, lens_color: CLEAR, carrying_case: NOT PROVIDED, end_similarity: IDENTICAL, overall_length: 16.000 INCHES NOMINAL IN, surface_finish: 10.0 MICROINCHES. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4240-00-278-9646, 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
G4-128
NSN: 4240-00-278-9646
FSC: 4240
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
lens_colorCLEAR
carrying_caseNOT PROVIDED
end_similarityIDENTICAL
overall_length16.000 INCHES NOMINAL IN
surface_finish10.0 MICROINCHES
first_end_stylePLAIN
special_featuresSUPPORT METHOD: HEADBAND; FRAME VENTILATION FEATURE INCLUDED
first_end_diameter0.2497 INCHES NOMINAL IN
lens_polarization_featureINCLUDED
NSN4240-00-278-9646
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LEVER,EMERGENCY RESERVE TITLE COMPONENT PN G4-128 MFR LEVER,EMERGENCY RESERV
KEY FEATURES
•
LENS POLARIZATION FEATURE: INCLUDED
•
CARRYING CASE: NOT PROVIDED
•
MATERIAL: PLASTIC LENS
•
LENS COLOR: CLEAR
TECHNICAL CHARACTERISTICS (FLIS)
LENS POLARIZATION FEATUREINCLUDED
SPECIAL FEATURESSUPPORT METHOD: HEADBAND; FRAME VENTILATION FEATURE INCLUDED
CARRYING CASENOT PROVIDED
MATERIALPLASTIC LENS
MATERIALPLASTIC FRAME
LENS COLORCLEAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
S4-160Interchangeable
interchangeable cross-reference
interchangeable
764Interchangeable
interchangeable cross-reference
interchangeable
DA3D160Interchangeable
interchangeable cross-reference
interchangeable
CW60Interchangeable
Same NIIN cross-reference
interchangeable
MILG4128Interchangeable
Same NIIN cross-reference
interchangeable
F1GCW60Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G4-128?
G4-128 is a LEVER,EMERGENCY RESERVE.
What parts can replace G4-128?
There are 6 known substitutes for G4-128: S4-160, 764, DA3D160 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G4-128?
G4-128 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4240-00-278-9646. 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