Winmate 98T012A0002G, Service Manual

Page: 84 / 92

SERVICE MANUAL
(
本文件不得擅自塗改或影印
) FMRD33B
84
2.
Unified thread standard:
Label as “Major diameter number - Threads per inch and Pitch number”, ex: #2-56, #4-40,
#6-32, #8-32.
Note: Major diameter number function (inches):
0.060”+ Major diameter number*0.013” (inches)
Ex:
#4: 0.060" + 4*0.013" =0.112"
3. British Standard Whitworth:
Pound times foot (lbf-ft,lbf-in)
The labeling method is as follow: First, set the denominator to 8, and then times the
numerator.
Ex: 1/8 x 0.50 –PPB: 1 thread x 0.50” inches, PPB
4. Conversion Chart
1 ft = 30.4cm, 1 lbf-ft =13.83kgf-cm, 1kgf =2.205lbf
1 lb = 0.454kg,1 kgf-cm =0.8673 lbf-in, 1N = 0.101972kgf
1N = 0.224809lbf
100Kgf-cm=10N-m=90lbf-in