เกลียวตลอด ASTM A193

D (DIAMETER) M12 M14 M16 M20 M22 M24 M27 M30 M36 M42 M48    
P (PICTH) 1.75 2.0 2.0 2.5 2.5 3.0 3.0 3.5 4.0 4.5 5.0    
M (HEAD THICKNESS) 12 14 17 20 23 24 27 30 36 42 48    
B  (WIDTH ACROSS FLAT) 21 24 27 34 36 41 46 50 60 70 80    
D (DIAMETER) 1/2 5/8 3/4 7/8 1” 1.1/8 1.1/4 1.1/2 1.5/8 1.3/4 1.7/8 2” 2.1/2
P (PICTH) 13 11 10 9 8 8 8 8 8 8 8 8 8
M 12.8 16 19.25 22.47 25.7 28.93 31.77 38.22 41.3 44.5 47.7 50.8  
B 7/8 1.1/16 1.1/4 1.7/16 1.5/8 1.13/16 2” 2.3/8 2.9/16 2.3/4 2.15/16 3.1/8 3.7/8
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