The Pietta 1873 Cattleman Black Powder Revolver Screw Kit is manufactured by Pietta for their 1873 single action models. These parts are not guaranteed to fit older Pietta models, other manufacturer's guns, or original firearms. All screws included are stainless steel. Refer to the full view schematic picture labeled with reference numbers for screw location. Includes: Features(1) #3 - SAA5203IX cylinder pin retainer screw(1) #4 - SAA5204IX cylinder retainer nut(1) #17 - SAA5296IX ejector rod tube screw(1) #30 - SAA5284IX hammer screw(1) #34 - SAA5288IX trigger screw(1) #35 - SAA5289IX bolt screw(1) #36 - SAA5517IX trigger and bolt spring screw(1) #38 - SAA5510IX mainspring screw(4) #39 - SAA5297IX rear backstrap and triggerguard screw(2) #41 - SAA5509IX front triggerguard and bottom grip connect screw