Part# 05-01381
MFR Model# TTP-218S


The S series firewall fitting has a 1 inch steel ball held in place by 2 stainless steel pressure plates. It has a swivel angle up to 50 degrees from straight and is held to the firewall with 6 #4 screws.

Assembly weighs only 1.0oz-1.9oz (.06lb-.12lb) depending on ball hole size.

Ball hole sizes available are .125, .188, .218, .240, .250, .260, .312, .330, .375, .438, .500, .562 and .750.

Meets FAR 23.1191 and AC 20-135 requirements.

Order example: TTP-125S (.125 ball hole size)
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Good quality manufactured part, however, it is NOT easy to install. I would not recommend this installation on an already completed aircraft with limited work space. The size .25 does NOT fit over a .25 control cable, try .26.

John S
April 4, 2020


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is part # 05-01382 appropriate for use with A-920 push pull cables?

Yes, 05-01382 will secure an A920 outer housing.

Q: Is the 05-00767 the appropriate fitting to secure an A-760 outer housing firmly in the firewall? Or would the 05-01379 or 05-00958 be the correct part?

I could not identify an A-760 cable, but if you are referring to an A-1760 cable, the best eyeball assembly to use is one with a 0.240" hole. There are several to choose from this size. You will just need to select the style of assembly you want and then the hole size 0.240".

Q: For part 05-12502, what is the diameter of the hole in the firewall that this will fit into?

You will need to drill a 1.125" diameter hole.

Q: Which hole size for this item 05-01435 do I have to buy?

If you need the housing to go through the eyeball firewall fitting, then you would use Part # 05-01381.

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