ข้อต่อสตัด

D (DIAMETER) 1/4 5/16 3/8 1/2 5/8 M6 M8 M10 M12 M16 M20
P (PICTH)  20  18 16 12 11 1.0 1.25 1.5 1.75 2.0 2.0
m  38.5 44 44 44 53.9 40 40 40 40 40 60
S (WIDTH ACROSS FLAT)            10  13  17  19  24 30
Visitors: 27,431