Leviton 29816-C 660W/250V Medium Base One-Piece Glazed Porcelain Outlet Box Mount Incandescent Lampholder,
Leviton 124-D Incandescent Lampholder, Medium Base, Single Circuit, 660W- 250V
LH0096 E26/E27 medium base porcelain lamp holder/socket with captive screws and 9" leads
660W/250V Medium Base One-Piece Glazed Porcelain Outlet Box Mount Incandescent Lampholder, Keyless, Single Circuit, 4 Screws with Case Lip, Top Wired - White | Loeb Electric
Amazon.com: Leviton 55 Weatherproof Lampholder, Single Circuit, 660W-250V; With Two 6 Inch Leads, One Black And One White, 14AWG 60C 600V, Free Ends Stripped 3/4 Inch. : Industrial & Scientific
Eagle 940 660W 250V E26 Medium Screw Lamp Socket
Push-Thru On-Off Light Socket (LEVITON), Brass, Polished & Lacquered - NO SET SCREW (40144) - Antique Lamp Supply - Quality Lamp Parts Since 1952
Leviton - Unfinished Brass E-26 Push Through Bridge Lamp Socket