Author Topic: source for M5 thread chasers  (Read 1861 times)

merrill

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source for M5 thread chasers
« on: May 26, 2024, 12:21:40 »
hello,
looking for where i can find M5 thread chasers.
M5 x 0.8
M5 x 0.7

i did a google search but really did not have any luck.


i may need to search Ebay in the EU.

thanks in advance Matt
Matt
Austin Tx
66 230 sl - "white"
78 300 D - Blue
98 C230

MikeSimon

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Re: source for M5 thread chasers
« Reply #1 on: May 26, 2024, 15:41:22 »
Going out on a limb here - I have never seen a M5x0.7. standard is M4x0.7 and M5x0.8
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner

Jordan

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Re: source for M5 thread chasers
« Reply #2 on: May 26, 2024, 16:13:31 »
I have a set I purchased from my local hardware store.  It has M4x0.7, M4x0.75, M5x0.8 and M5x0.9 amongst others.  Have not seen an M4x0.8
Marcus
66 230SL  Euro 4 speed

merrill

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Re: source for M5 thread chasers
« Reply #3 on: May 26, 2024, 16:50:20 »
MikeSimon
hi,
im am guessing this is an M5x0.7

M5X28-A2-70   

maybe its not, 
Matt
Austin Tx
66 230 sl - "white"
78 300 D - Blue
98 C230

MikeSimon

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Re: source for M5 thread chasers
« Reply #4 on: June 01, 2024, 21:10:10 »
MikeSimon
hi,
im am guessing this is an M5x0.7

M5X28-A2-70   

maybe its not,

No idea!
1970/71 280SL Automatic
Sandy Beige
Parchment Leather
Power Steering
Automatic
Hardtop
Heated Tinted Rear Window
German specs
3rd owner

Pawel66

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Re: source for M5 thread chasers
« Reply #5 on: June 02, 2024, 00:51:45 »
Original text:
A2 - Stal nierdzewna AISI 304 - najpopularniejszy gatunek stali austenicznych o zawartości około 18% chromu i około 8% niklu. Dobra odporność na korozję. Typowa wytrzymałość to 700 MPa, czyli A2-70.

Google translated:

A2 - AISI 304 stainless steel - the most popular grade of austenitic steel with a content of approximately 18% chromium and approximately 8% nickel. Good corrosion resistance. Typical strength is 700 MPa, i.e. A2-70.
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

mdsalemi

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Re: source for M5 thread chasers
« Reply #6 on: June 03, 2024, 14:34:44 »
If you really, honestly and truly, have a non-standard thread size or one so obscure that you cannot find an off the shelf die or tap, you can always go custom: https://www.tapcotaps.com. I'm sure there are plenty more around the country or world.

Back in the mid 1970s when working on an Austin America (Austin 1200 to those across the world) we ran into such a threaded hole; I cannot be sure but it may have been on a flywheel or something. My father, then working in a research lab like Bell Labs, brought the part into the machine shop at work. Run by a German and so neat and clean, you could eat off the floor. Guenther measured the undamaged threads, decided they don't have a tap for that size...and made one for my father. We used it to chase the threads with a little bit of cutting oil. During the same era, he also made a clutch alignment tool for my Datsun 510. The local Datsun dealer was nice enough to let me look at it but wouldn't let it out of the shop. Armed with a caliper and graph paper, I drew the tool and Guenther made it for us. Sometimes that's what you have to do.
Michael Salemi
Davidson, North Carolina (Charlotte Area) USA
1969 280SL (USA-Spec)
Signal Red 568G w/Black Leather (Restored)
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