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Here is what I used. The middle hex part has a thru hole and use a hardened washer on top. hold hex part in place and use rachet to compress nut. Works good if you only have a few of them to replace. I bought metric rivnuts from McMaster-Carr.



Scott

Scooter wrote:Here is what I used. The middle hex part has a thru hole and use a hardened washer on top. hold hex part in place and use rachet to compress nut. Works good if you only have a few of them to replace. I bought metric rivnuts from McMaster-Carr.

Hey Scott.

Which rivnut did you buy? I am looking at the following part:

M6x1.00 10.00 0.7-4.2 95105A183 9.08

Zinc-Plated Steel Open-End Knurled Rivet Nut M6X1.0 Internal Thread, .7-4.2mm Material Thk

I assume I want the rivnut that only goes from .7-4.2mm material thickness?

I have decided to go with 1/4-20 rivnuts for this, rather than the M6-1.0. I bought a 3-1 rivet gun which does 1/4"-20 rivnuts, but not M6. The two are identical as far as the hole required and the material thickness etc. This is the part number for the rivnuts from McMaster-Carr:

1/4"-20 25/64" 0.027"-0.165" 95105A143 9.08

Buy the right rivnuts... too many Pinzes have been repaired with "close" and the poor sap that owns it next is stuck with a repair bill that didn't have to be ( or the owner forgot what he did).
A rivnut isn't a big thing except you have a mix of bolts for the same thing, and they can get buggered by trying to force them "a little" into the wrong pitch thread, and end up replacing nutserts needlessly ( and enlarging the original hole)
Carbs are becoming henteeths because of parts being destroyed because of people putting SAE and sheetmetal screws where a metric belongs.

Remember, all Pinzes have a previous owner, and some of your problems could come from one of those repairs.... think of the next owner when you fix something.... I know, you'll never sell it but you may move up some day to TD, and you'll never want to drive that old gasser again

David Dunn wrote:Buy the right rivnuts... too many Pinzes have been repaired with "close" and the poor sap that owns it next is stuck with a repair bill that didn't have to be ( or the owner forgot what he did).
A rivnut isn't a big thing except you have a mix of bolts for the same thing, and they can get buggered by trying to force them "a little" into the wrong pitch thread, and end up replacing nutserts needlessly ( and enlarging the original hole)
Carbs are becoming henteeths because of parts being destroyed because of people putting SAE and sheetmetal screws where a metric belongs.

Remember, all Pinzes have a previous owner, and some of your problems could come from one of those repairs.... think of the next owner when you fix something.... I know, you'll never sell it but you may move up some day to TD, and you'll never want to drive that old gasser again

Hey David.

Believe me, I agree with you, and I come from the land of metric!

I am not so concerned in this case simply because I am going to use Philips or Robertson (Canadian!) bolts, so I won't need an SAE tool in my kit....although I keep a complete set with me anyway...

I am not so concerned in this case simply because I am going to use Philips or Robertson (Canadian!) bolts, so I won't need an SAE tool in my kit....although I keep a complete set with me anyway...

And in there lies the slip... first a single SAE... then another.. then a USS until finally you use a Wentworth bolt !

David Dunn wrote:

I am not so concerned in this case simply because I am going to use Philips or Robertson (Canadian!) bolts, so I won't need an SAE tool in my kit....although I keep a complete set with me anyway...

And in there lies the slip... first a single SAE... then another.. then a USS until finally you use a Wentworth bolt !

I will make sure to contact my sponsor if I start losing control...

Also, I like Robertson head bolts.... I use them when someone peeves me

Neat little rivnut tool along the same lines as the home made.

http://www.aircraftspruce.com/catalog/t ... uttool.php

Probably have to buy a hardened M6 cap screw for M size, but that seems to get good marks in the aviation community.

I use this one which works like a pop rivet tool for the rivnuts (as long as they are SAE as it does not have metric heads): http://www.use-enco.com/CGI/INSRIT?PMAK ... TPG=INLMK3
Works pretty good so far.

I've found this plier type one to work well for me. I purchased the 4, 5 & 6mm mandrels to go along with it.

http://www.mcmaster.com/#rivet-nut-inst ... ls/=gvoijm

check out Hanson rivet and supply co. out of Pacoima, Ca. largest selection of rivnuts Ive found to include sealed, aerospace, and comercial fastners. www.hansonrivet.com

berger wrote:

Scooter wrote:Here is what I used. The middle hex part has a thru hole and use a hardened washer on top. hold hex part in place and use rachet to compress nut. Works good if you only have a few of them to replace. I bought metric rivnuts from McMaster-Carr.

Hey Scott.

Which rivnut did you buy? I am looking at the following part:

M6x1.00 10.00 0.7-4.2 95105A183 9.08

Zinc-Plated Steel Open-End Knurled Rivet Nut M6X1.0 Internal Thread, .7-4.2mm Material Thk

I assume I want the rivnut that only goes from .7-4.2mm material thickness?

Fwiw, I found those 10mm rivnuts too big for the existing holes on my K. I used their SS 9mm M6 rivnuts instead and they were fine.

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