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  Carriage Bolt  
    Product Model :  GB801
 
 
GB801 M5 M6 M8 M10 M12 M16 M20
Screw Length when Bolt Length 125L     18+2.50 22+3.00 26+3.50 30+4.00        
When Bolt Length but 200 - L     24+2.50 28+3.00 32+3.50 36+4.00        
When Bolt Length but 200200 L             45+3.50 49+4.00        
Reduced Shank (Grade 8g) D MAX      5.30 7.10 8.90 10.70        
MIN      5.23 7.02 8.82 10.62        
Normal Shank D3 MAX      6.00 8.00 10.00 12.00        
MIN       5.52 7.42 9.42 11.30        
Square Nack Across Flats S MAX     6.30 8.36 10.36 12.43        
MIN     5.84 7.80 9.80 11.76        
Lenght of Square Neck H2 MAX     3.40 3.40 4.40 5.40        
MIN     2.60 2.60 3.60 4.60        
Head Diameter D2 MAX     13.10 17.10 21.30 25.30        
MIN     11.30 15.30 19.16 23.16        
Head Height H MAX     4.08 5.28 6.48 8.90        
MIN     3.20 4.40 5.60 7.55        
When Bolt Length but 200 Tolerance L2

DiameterM5 - M20

20 20-30 35-50 55-80 90-120 130-150 160-180 200
+0.90 +1.05 +1.25 +1.50 +1.75 +2.00 +4.00 +4.60
-0.90 -1.05 -1.25 -1.50 -1.75 -2.00 -4.00 -4.60
Max Rod Length     200 250 400 400 400 500 500
 
  4.6,4.8,6.8,8.8 Grade)
 
 
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