Looking for Singer 29k thumb nut #113088/nn88w

[Uwe]

Juki is happily mixing metric, SAE, and specialty Singer threads on their machines. Sometimes they're just messing with you. The 15/64-28 is in the parts list snippet below (from Juki TSC-441). Also note the 3/16-28 and 3/16-32 screws to drive you to the edge of insanity trying to match up threads.

15/64-28 is also dangerously close to an M6-1.0 screw. 15/64"=5.953mm, 1mm pitch is 25.4/inch. Both 1/4-28 and M6 screws will thread a few turns into an 15/64-28 threaded hole before binding. 

Edited August 1, 2017 by Uwe

[GPaudler]

Thanks Evo and Uwe! Pretty diabolical to change a screw size by 0.015". 

 

[GPaudler]

That parts list snippet also shows a 9/32-28 nut, .015" over 1/4-28. They - Singer, then Juki - really want to make sure you can't just buy a nut at the hardware store.

My 130 year-old French Cornely mixes English and Metric but I haven't found any proprietary-size fasteners on it.

 

[shoepatcher]

 

Singer used a lot of odd ball threads on screws and nuts.  They wanted you to buy it from them.  However, when they no longer make the oddball screws and nuts, you are forced to go else where.  Fortunately, Juki copied a lot of the Singer screw and nut specs in their machines so you can find replacements on a lot of screws and nuts but not  all.

The one thing Juki has never printed up is a general screw and nut book to show you all that is available  You must do like Uwe and find them in specific parts books.

glenn

[Darren Brosowski]

Seiko make it even easier as they use the Singer part numbers!