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  Carriage Bolt  
    Product Model :  GB14-76
 
 
GB14-76 M6 M8 M10 M12 M14 M16 M20
Screw Length when Bolt Length 125L 18+2.50 22+3.00 26+3.50 30+4.00 34+4.00 38+4.50 46+5.00
When Bolt Length but 200 - L 24+2.50 28+3.00 32+3.50 36+4.00 40+4.00 44+4.50 52+5.00
When Bolt Length but 200200 L         45+3.50 49+4.00 53+4.00 57+4.50 65+5.00
Reduced Shank (Grade 8g) D MAX 5.30 7.10 8.90 10.70 12.55 14.55 18.20
MIN 5.23 7.02 8.82 10.62 12.47 14.47 18.12
Normal Shank D3 MAX 6.00 8.00 10.00 12.00 14.00 16.00 20.00
MIN 5.23 7.02 8.82 10.62 12.47 14.47 18.12
Square Nack Across Flats S MAX 6.30 8.36 10.36 12.43 14.43 16.43 20.52
MIN 5.84 7.80 9.80 11.76 13.76 15.76 19.72
Lenght of Square Neck H2 MAX 4.40 5.40 6.40 8.45 9.45 10.45 12.55
MIN 3.60 4.60 5.60 7.55 8.55 9.55 11.45
Head Diameter D2 MAX 13.10 17.10 21.30 25.30 29.30 33.60 41.60
MIN 11.30 15.30 19.16 23.16 27.16 31.00 39.00
Head Height H MAX 4.08 5.28 6.48 8.90 9.90 11.10 13.10
MIN 3.20 4.40 5.60 7.55 8.55 9.45 11.45
When Bolt Length but 200 Tolerance L2

DiameterM5 - M20

16-50 55-100 110-200 >200                
+1.50 +1.80 +2.00 +2.00                
-1.50 -1.80 +2.00 -2.00                
Max Rod Length     200 250 400 400 400 500 500
 
  (4.6,4.8,6.8,8.8 Grade)
 
 
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