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SheltathaLore

Lost a screw - anyone know what replacement I need?

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This weekend was an adventure - broke my garment machine twice attempting to sew light leather on it with a self-modified foot (whoops.  extreme regret), fixed it twice (extremely proud of myself!), and lost some screws in the process.  After some creative deciphering of the parts list, I'm fairly certain I know what I need to replace the missing feed dog screw with, but I also lost one of the screws that holds the hook on (WHY ARE THEY SO IMPOSSIBLY TINY).  Anyone know what I need for a replacement?  I assume the dealer replaced the hook before sending it to me (it seems improbable that a Chinese knockoff brand installs Japanese hooks by default) - but if it helps, it's a Typical GC6760, and this is the manual + parts list: https://www.dropbox.com/s/4q5z7a550assjfw/TY_manual_GC6760_en_01.pdf?dl=0

 

Relatedly, I assume this machine is a clone, but if anyone knows what it's a clone *of*, it might save some puzzling over e.g. what the heck a "Screw SM3.18-44x6.5" is, in the future.

 

Picture:

YSeu8sP.jpg

20111101090049064906.jpg

 

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7 hours ago, SheltathaLore said:

Screw SM3.18-44x6.5

That's probably a 1/8"-44 or #5-44 screw written in weird metric/imperial mishmash dimensions. 1/8"=3.175mm

That missing hook screw might be tough to find individually. Your best bet may be to buy a cheap hook that has a good chance of using the same screw. I doubt Hirose invented a new screw for each of their hundreds of hook variations.

One candidate is the Hirose HSH-7.94B hook,  which is used in dozens of machines and therefore cheap. Available for around $15 on Ebay and I guess some of our trusty banner vendor have them, too. At this prices, the clone manufacturers have little incentive to make their own.

Hirose_HSH-794BLarge.jpg

Here's the list of machines this hook fits, according to the Hirose Catalog (Hirose Catalog Low Resolution OCR.pdf) :

Hirose HSH-79.4B.jpg

 

 

Edited by Uwe

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I would guess it is a BROTHER S-1000 / S-7200 clone or similar - check pictures at the College Sewing Website (see link below). I guess most of the brother machine of this type will use the same hook.

if you find the screw - order 2 or 3 of them along with needle screws, tension spring and screws a thread regulator spring, maybe tension unit nut spring and discs, needle plate screws, feed dog screws and other useful screws and small parts  - you will be literally "screwed" if you loose them in the middle of a project (this happens) and you have no replacements. Better have 2 of each as spare!

When I setup a new old cast iron clunker for my self, the 2nd thing (after restoring and adjusting) is looking for small screws and bits. I get most f my stuff from College Sewing in the UK.

Their Brother section:

https://www.college-sewing.co.uk/brother-industrial-sewing-machine-spare-parts/

Edited by Constabulary

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Oh, I hadn't thought of looking at the Brother machines!  I bet I have a clone of the 7220, since mine's a needle feed, and it looks exactly the same - right down to the incredibly annoying thread wiper placement.

Definitely going to snag some spare screws.  Thanks for the tip!

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This should help, and can be ordered by part number.  Here, Juki numbers are being used.

JukiHookParts.JPG

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