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The nomal standart screw has a diameter of about 5,15mm and
the thread is called
BSW 7/32 inch 24G which means we have 24 threads on a lenght of 1 inch .This screw is used on most of modern and vintage drums like Ludwig,Rogers,Gretsch,Slingerland and others some say 12/24 UNC is about the same
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The SONOR screw has a diameter of about 6,20mm and has 20
threats on a lenght of 1 inch.This Version is called
BSW 1/4 inch 20G its used by SONOR only as far as i know |
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This is a M6 screw used on BDs of Pearl Drums for example. Its a regular DIN M6 thread diameter is about 5,75mm and one thread is 1 mm high |
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This is a M5 screw used on Trixon Drums and Tromsa Its a regular DIN M5 thread diameter is about 4,70mm and one thread is 0,8 mm high |
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This is a special M5 screw used on some old Japanese Drums
(Star,Drummate etc..) Diameter about 4,9mm and one thread is 0,9 mm high
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more when i have time,Suggestions and pictures welcome Greetings GERD |
You can measure that with a thing called
" Gewindelehre" available in shop for screws and nuts for about 10.- Euro
Or use a screw you be sure about the thread and hold it on the unknown screw like the picture shows.If its threads fit in like in the picture and the diameter is the same you are sure to have the same thread |
