Series | 
                                                                        N/A 4002 | 
                                                                                Head Style | 
                                                                        N/A Knurled Cylindrical | 
                                                                                Stud Head Material | 
                                                                        N/A Carbon Steel per QQ-S-633, FS BIII2, ASTM A108 | 
                                                                                Stud Shank Material | 
                                                                        N/A Alloy Steel per ASTM A331, FS 4037 | 
                                                                                Spring Material | 
                                                                        N/A Music Wire per ASTM-A228, Steel, Spring | 
                                                                                Spring Cup Material | 
                                                                        N/A Carbon Steel ASTM A108 FS BIII2 or BIII3 or Carbon Steel ASTM A684 FS 1050 | 
                                                                                Cross Pin Material | 
                                                                        N/A Music Wire per ASTM-A228, Steel, Spring | 
                                                                                Finish | 
                                                                        N/A Cadmium Plate per QQ-P-416, Type II, Class 2 | 
                                                                                L | 
                                                                        N/A 0.803-0.818 in | 
                                                                                S | 
                                                                        N/A 0.980 in | 
                                                                                Weight/100 | 
                                                                        N/A 12.120 lb | 
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                                                                            N/A
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