Plate Caps
Plate Caps, Heat Radiators and Clips
RF Parts offers plate caps, heat radiators and clips for many popular tubes. This includes popular tubes, such as the 3-400Z/3-500Z.
The following is a list of plate caps and heat radiators and their matching tubes.
The following is a list of clips and their matching tubes.
Clips | Matching Tubes |
---|---|
AC1 Anode clip for 4cx150a-400a O.565" /11 mm typ. diameter (Default) | 4cx150a-400a O.565" /11 mm typ. diameter |
AC2 Anode Clip for 4CX800A / 4CX1600B / 3CX3000A7, etc | 4CX800A / 4CX1600B / 3CX3000A7, etc |
AC3 Anode Clip for Large 3CX & 4CX tubes thru 15000 | Large 3CX & 4CX tubes thru 15000 |
AC4 Anode Clip for 833A & C tubes or with 0.45 diameter plate cap | 833A & C tubes or with 0.45 diameter plate cap |
AC5 Anode Clip, Plate/Grid, 0.57", 4CX250B, 4CX350A | Plate/Grid, 0.57", 4CX250B, 4CX350A |
SPRCLP Spring clip for smaller plate caps 0.24-0.25" Dia | smaller plate caps 0.24-0.25" Dia |
SPRCLP-L Spring clip, large. fits 572B, 810, 866, 813 | 572B, 810, 866, 813 |

926H-138 Birtcher Anode Clamp for 4CX250B, 4X150, 4CX150, 4CX350 (Pull)
In Stock
926H-138 Birtcher Anode Clamp for 4CX250B, 4X150, 4CX150, 4CX350 (Pull)
Used
MFR: Birtcher
SKU: 926H-138-P

Vintage Millen Ceramic Plate Cap For 6146B / 6146W / 6LQ6 / 6LF6 / 8950 (NOS)
In Stock
- Size: 1-1/8" long x 5/8" wide x 7/16" High
- Internal Diameter: 3/8"
- Tested and verified
Used
MFR: Millen Manufacturing Company
SKU: PLCAP2-MILLEN-P

PLCAP3N National Ceramic Plate Cap for Tubes with Plate Diameter of 1/4" (Pull)
In Stock
This plate cap is sized to fit the popular 6146B / 6146W / 6LQ6 / 8950 / etc style plate cap of approximately 1/4" diameter.
- Size: 1-1/16" long x 9/16" wide x 17/32" High
- Internal spring opening: 1/4" diameter
Used * No longer availabe for export
MFR: National Company
SKU: PLCAP3N-P

Vintage Millen Ceramic Plate Cap For 811A , 572B, 866, and 833 Tubes (NOS)
In Stock
This plate cap is sized to fit the popular 811A / 572B style plate cap of approximately 9/16" diameter.
- Size: 1-1/2" long x 13/16" wide x 3/4" High
- Internal Diameter: 9/16"
- Tested and verified
New Old Stock * No longer available fo reexport
MFR: Millen Manufacturing Company
SKU: PLCAP4-MILLEN

Vintage National Ceramic Plate Cap For 811A , 572B, 866, 813, and 833 Tubes (Pull)
In Stock
This plate cap is sized to fit the popular 811A / 572B style plate cap of approximately 9/16" diameter.
- Size: 1-1/2" long x 13/16" wide x 3/4" High
- Internal Diameter: 9/16"
- Tested and verified
MFR: National Company
SKU: PLCAP4-P

HR-7 Heat-Dissipating Connector Top Cap (Pull)
In Stock
Replacement Aluminum Plate Cap / Anode Heat Radiator for 304TL, 304TH, or tubes having 0.126 diameter anode stem. New. Diameter: 1 3/8" Height: 1 3/8" Hole Size: 0.127. Heat dissipating connectors are used to make electrical connections to the plate and grid terminals of Transmitting tubes, and at same time, provide efficient heat transfer from the tube element and glass seal to the air.
Used * No longer availabale for export
MFR: Generic Brand
SKU: HR-7-GEN-P

HR-8 Eimac Heat-Dissipating Connector Top Cap (NOS)
In Stock
New Old Stock * No longer available for export
Fits 3-1000Z, 4-1000A, 4PR1000A and 833 tubes
MFR: Eimac
SKU: HR-8-EI-NOS
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HR-1 Eimac Heat-Dissipating Connector Top Cap (NOS)
In Stock
For 2-25A and 3C24 tubes and tubes with a .052" pin.
New Old Stock * No longer available for export
MFR: Eimac
SKU: HR-1-EI

HR-6 Eimac Heat-Dissipating Connector Top Cap (Pull)
In Stock
Will fit 3-400Z, 3-500Z & ZG, 4-400A, & 4-400C
Size: 0.88" High x 0.82" Diameter
0.367" Hole Diameter
Used * No longer available for export
MFR: EIMAC
SKU: HR-6-P

PLCAP3 Ceramic Plate cap for tubes with plate diameter of 0.25"
In Stock
Ceramic Plate cap for tubes with plate diameter of 0.25",
MFR: China
SKU: PLCAP3
Add to Cart