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Basic Part Information MS51848 Dash Numbers NAS1676 Dash Numbers
Nominal Inside Diameter Outside Width Thickness WCL Steel Stainless Steel
Washer A Diameter C D Product Number Finish ZN2 or Type Finish
Size
Min.
Max.
B
 
 
 
PHO
CD2
300
300
CD2
  0     .062     .068     .112     .018     .018   #0 018 x 018   21     1     41     C0    
  1     .075     .081     .123     .022     .022   #1 022 x 022         C1    
  2     .088     .094     .142   0.022 0.022 #2 HC   23     3     43     C2     2  
  4     .114     .120     .173     .022     .022   #4 HC   25     5     45     C4     4  
  5     .127     .133     .202     .030     .030   #5 HC          
  6     .141     .148     .216     .030     .030   #6 HC   27     7     47     C6     6  
  8     .167     .174     .267     .042     .047   #8 HC   28     8     48     C8     8  
  10     .193     .200     .294     .042     .047   #10 HC   29     9     49     C10     10  
  12     .220     .227     .331     .047     .078   #12 HC          
  1/4     .252     .260     .363     .047     .078   1/4 HC   30     10     50     C416     416  
  5/16     .314     .322     .457     .062     .093   5/16 HC   31     11     51     C516     516  
  3/8     .377     .385     .550     .076     .125   3/8 HC   32     12     52     C616     616  
  7/16     .440     .450     .644     .090     .140   7/16 HC   33     13     53     C716     716  
  1/2     .502     .512     .733     .103     .172   1/2 HC   34     14     54     C816     816  
  9/16     .564     .574     .819     .116     .187   9/16 HC          
  5/8     .628     .641     .917     .125     .203   5/8 HC     15     55     C1016     1016  
  3/4     .753     .766     1.105     .154     .218   3/4 HC     16       C1216     1216  
  7/8     .878     .894     1.291     .182     .234   7/8 HC     17       C1416     1416  
  1     1.003     1.024     1.478     .208     .250   1" HC     18       C1616     1616  
  1-1/8     1.129     1.153     1.663     .236     .313   1 1/8 HC          
  1-1/4     1.254     1.280     1.790     .236     .313   1 1/4 HC          
  1-3/8     1.397     1.408     2.031     .292     .375   1 3/8 HC          
  1-1/2     1.504     1.534     2.159     .292     .375   1 1/2 HC          
  1-3/4     1.758     1.789     2.596     .383     .469   1 3/4 HC          
  2     2.008     2.039     2.846     .383     .469   2" HC          
  2-1/4     2.262     2.293     3.345     .508     .508   2 1/4 HC          
  2-1/2     2.512     2.543     3.595     .508     .508   2 1/2 HC          
Footnotes:
  1. MS51848-I indicates #0 HC C/S CD1 or ZNI
    MS51848 series was designated to supercede the NAS1676 specifications; however the NAS1676 Print has not been cancelled.
  2. NAS1676 add a P after dash # to indicate BKO finish on Stainless Steel.
  3. NAS1676 steel dash numbers add a P to indicate Cad with a black Chromate finish (CD3).

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WCL Company specializes in reliable low-cost, engineered high-performance fasteners, fittings, plastic components, washers, nuts, and a wide array of fastener components. WCL has 50 years of experience with all types of standard and engineered fasteners, and provides a comprehensive line of fastener products for sale from some of the world's leading manufacturers.
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