Series | 
                                                                        N/A 4002 | 
                                                                                Head Style | 
                                                                        N/A Dovetail Slot | 
                                                                                Stud Material | 
                                                                        N/A 4037 Alloy Steel per ASTM A331, ASTM A752 or ASTM A322 | 
                                                                                Spring Cup Material | 
                                                                        N/A Carbon Steel per ASTM A109, ALT: 1050 per ASTM A684 or ASTM A108, 1212 per ASTM A108 or 12L14 per QQ-S-637 | 
                                                                                Spring & Cross Pin Material | 
                                                                        N/A Music Wire per ASTM A228 | 
                                                                                Stud, Wing Finish | 
                                                                        N/A Cadmium Plate per ASM-QQ-P-416, Class 2, Type II | 
                                                                                Spring Cup Finish | 
                                                                        N/A Cadmium Plate per ASM-QQ-P-416, Class 2, Type II | 
                                                                                Spring & Cross Pin Finish | 
                                                                        N/A Cadmium Plate per ASM-QQ-P-416, Class 2, Type II | 
                                                                                L | 
                                                                        N/A 0.473-0.483 in | 
                                                                                S | 
                                                                        N/A 0.750 in | 
                                                                                C (+.010/-.020) | 
                                                                        N/A 0.257 in | 
                                                                                Approx. Weight/100 | 
                                                                        N/A 1.100 lb | 
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                                                                            N/A
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