To elevate and locate a part

PART#                  THREAD        DIA.     HT.         PRICE       
R20-5075-PSO        1/4"-20          .50"      .75"          $14.90     
R20-501-PSO          1/4"-20          .50"      1.0"          $15.20   
R20-7575-PSO        1/4"-20           75"      .75"          $16.70     
R20-175-PSO          1/4"-20          1.0"      .75"          $22.10    

PART#                  THREAD       DIA.       HT.        PRICE          
R8-1320-PSO            M8            13mm      20mm      $16.20     
R8-1325-PSO            M8            13mm      25mm      $16.20      
R8-1920-PSO            M8            19mm      20mm      $22.10