SINGER 31K & 331K (Also For 431 Class) Low Speed CB Shuttle Medium Weight Lockstitch Machines
A trailing walking foot type  machine with shuttle, suitable for Medium/Heavy work.  Popular for many years with Upholsters and Light Leather Work Manufacturers. Base model was the 31K series from which the 331K and the 431K evolved.  

Most Popular Models   31K16   31K47   331K1   331K4   331K5			Need A Part For Your SINGER 31K or 331K Machine ? We Carry Most Everyday Items for these classes of machine. This is just a selection of the most popular parts we sell.  Whatever you need, simply call us and we'll do our best to help. PIPING SETS for these machines are In Stock 3/16" & 1/4".
62740 Bobbincase	12393 Shuttle Hook	2996 Bobbin	S35 Piping Foot Set	Tension Spring	24983 Std.Foot
12481 & 12482 Medium Feed Set		20159 & 20160 Med/Heavy Feed Set		24415 Shuttle Race
SCREWS  -  TENSION PARTS  -  INTERNAL PARTS MACHINE & MACHINIST ACCESSORIES
Need Help or Advice?  Unsure of exactly what you need?  Or can't see your parts here?  Please Call one of our Engineers who will be delighted to help.