Tubes - Transmitting, Audio, Misc.
Please choose from the following TUBES Sub-Catagory choices:
572B![]() |
811A![]() |
6146![]() |
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4CX350 Series![]() |
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SOCKETS![]() |
CHIMNEYS![]() |
PLATE CAPS![]() |
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BASES![]() |
PARASITIC SUPPRESSOR![]() |

Grid Ring Collet for 3CPX800A7/3CX400A7 Silver Plated
In Stock
Grid Ring Collet, Silver Plated
Size: 2.5" Diameter x 0.13" Thickness. Finger stock hole opening is 1.4", 6 holes for mounting
MFR: AMPLIFIER SYSTEMS INC.
SKU: GRIDCOL

001838-EI Eimac Middle Filament Collet for SK300 Socket (NOS)
In Stock
Middle Filament Collet for Eimac SK300 tube Socket used for 4CX5000A transmitting tube
New Old Stock * No longer available for export
MFR: Eimac
SKU: 001838-EI
Six Month Warranty

001839 Eimac Control Grid Collet for SK300 Socket (NOS)
In Stock
This is the collet that fits on the outside of 001837 & 001838 Collects on SK300 Eimac tube socket. Size: 3.8" Inside Diameter
New Old Stock
MFR: Eimac
SKU: 001839-EI

001839 Eimac Control Grid Collet for SK-300 Socket (Pull)
In Stock
This is the collet that fits on the outside of 001837 & 001838 Collects on SK300A Eimac tube socket. Size: 3.8" Inside Diameter
Comes with the spring ring. Missing two teeth on the ring.
Used
MFR: Eimac
SKU: 001839-P

001838 Eimac Middle Filament Collet for SK300 Socket (Pull)
In Stock
This is the collet that fits in middle of 001837 & 001839
Size: 2.8" Inside Diameter
Used
MFR: Eimac
SKU: 001838-P