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.

Heat Radiators and Plate Clips	Matching Tubes
HR2 Heat radiator, tube plate cap, finned	For tubes with .0625" pin.
HR3 Heat radiator, tube plate cap, Eimac	Works with tubes with 0.72" Plate terminal
HR4 Heat radiator, tube plate cap, finned	For tubes with .1015 " dia. pin
HR6-SHORT Plate Cap Heat radiator, short version 3-400Z/3-500Z & ZG, 4-400A	short version 3-400Z/3-500Z & ZG, 4-400A
HR6-TALL Plate Cap Finned plate cap 3-500/4-400	3-500/4-400
HR7 Plate Cap / Anode Heat Radiator for 304TL or 304TH	304TL or 304TH
HR8 Plate cap, Finned Aluminum, Fits on 3-1000Z / 4-1000A / 4PR1000A/ 833	3-1000Z / 4-1000A / 4PR1000A/ 833
PC509 Plate cap, 1/4" for EL509 / EL519 / 6KG6	EL509 / EL519 / 6KG6
PLCAP1 Ceramic Plate cap for Tubes: 811A / 572B / 866 / 833,	811A / 572B / 866 / 833
PLCAP2 Ceramic Plate cap for tubes with plate diameter of 0.35": 6146B / 6146W / 6LQ6 / 8950 tubes,	tubes with plate diameter of 0.35": 6146B / 6146W / 6LQ6 / 8950 tubes
PLCAP3 Ceramic Plate cap for tubes with plate diameter of 0.25"	tubes with plate diameter of 0.25"
HR7 Plate Cap / Anode Heat Radiator for 304TL or 304TH, Eimac (NOS)	304TL or 304TH
HR6-1 Plate Cap Finned, 3-500Z & 4-400A	3-500Z & 4-400A

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

Vintage National Ceramic Plate Cap For 811A , 572B, 866, and 833 Tubes (Pull)

$8.91
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
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HR-7 Heat-Dissipating Connector Top Cap (Pull)

$23.91

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

Made in the USA
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HR-8 Eimac Heat-Dissipating Connector Top Cap (NOS)

$38.91

New Old Stock * No longer available for export
Fits 3-1000Z, 4-1000A, 4PR1000A and 833 tubes
MFR: Eimac
SKU: HR-8-EI-NOS

Made in the USA
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HR-1 Eimac Heat-Dissipating Connector Top Cap (NOS)

$9.91

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
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HR-6 Eimac Heat-Dissipating Connector Top Cap (Pull)

$13.91

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
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PLCAP3 Ceramic Plate cap for tubes with plate diameter of 0.25"

$1.95 As low as: $1.65

Ceramic Plate cap for tubes with plate diameter of 0.25",

MFR: China

SKU: PLCAP3
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Tube Plate Cap for 3CX3000A7 (Pull)

$39.91
- Used in Henry 3000D
- Silver Plated
Used * No longer available for export
MFR: Henry Radio Company
SKU: HTPC-3000-P
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