View Larger Map
THREAD SIZE COMPARISON
METRIC PRODUCTS UNIFIED INCH PRODUCTS B.S.INCH PRODUCTS
SIZE THREAD PITCH & T.P.I. Major Dia. SIZE T.P.I. Major SIZE T.P.I. Major   Major 
COARSE FINE Dia. Dia T.P.I. Dia
  PITCH T.P.I. PITCH T.P.I.       UNC UNF     BSW BSF   BA  
  mm   mm   mm inch       inch       inch   inch
M3 0.50 51.00     3.00 0.118 # 5 40 44 0.125   40   0.125    
                      5BA       43.1 0.126
              # 6 32 40 0.138 4BA       38.5 0.142
M4 0.70 36.00     4.00 0.157 # 8 32 36 0.164 3BA       34.8 0.161
M5 0.80 32.00     5.00 0.197 # 10 24 32 0.190 3/16" 24 32 0.187    
                      2BA       31.3 0.185
                      1BA       28.2 0.209
M6 1.00 25.00     6.00 0.236 1/4" 20 28 0.250 0BA       25.4 0.236
                      1/4" 20 26 0.250    
M8 1.25 20.00 1.00 25 8.00 0.315 5/16" 18 24 0.313 5/16" 18 22 0.313    
M10 1.50 17.00 1.25 20 10.00 0.394                    
      1.00 25 10.00 0.394 3/8" 16 24 0.375 3/8" 16 20 0.375    
              7/16" 14 20 0.438            
M12 1.75 14.50 1.50 17 12.00 0.472                    
      1.25 20 12.00 0.472 1/2" 13 20 0.500 1/2" 12 16 0.500    
(M14) 2.00 12.50 1.50 17 14.00 0.551                    
M16 2.00 12.50 1.50 17 16.00 0.630 5/8" 11 18 0.625 5/8" 11 14 0.625    
(M18) 2.50 10.00 1.50 17 18.00 0.709                    
M20 2.50 10.00 1.50 17 20.00 0.787 3/4" 10 16 0.750 3/4" 10 12 0.750    
M22 2.50 10.00 1.50 17 22.00 0.866 7/8" 9 14 0.875 7/8" 9 11 0.875    
M24 3.00 8.50 2.00 13 24.00 0.945 1" 8 12 1.000 1" 8 10 1.000    
          24.00 0.945                    
M27 3.00 8.50     27.00 1.060 1.1/8" 7 12 1.125 1.1/8" 7 9 1.125    
M30 3.50 7.30     30.00 1.181 1.1/4" 7 12 1.250 1.1/4" 7 9 1.250    
M33 3.50 7.30     33.00 1.299                    
M36 4.00 6.30     36.00 1.417 1.1/2" 6 12 1.500 1.1/2" 6 8 1.500    
M42 4.50 5.60     42.00 1.653                    
                                 
SHCS  of size above 1" are either as per ANSI B18.3 OR as per LPS-STANDARD      
All Copyright Reserved.