Howmet| Items |
 40S77-1 40S77 Stud Assemblies - Wing Head, Nickel Plated |
40S77-2 40S77 Stud Assemblies - Wing Head, Nickel Plated |
40S77-3 40S77 Stud Assemblies - Wing Head, Nickel Plated |
40S77-4 40S77 Stud Assemblies - Wing Head, Nickel Plated |
40S77-5 40S77 Stud Assemblies - Wing Head, Nickel Plated |
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| Head Style | Wing | |||||||||
| Stud Material | Alloy Steel | |||||||||
| Wing Material | Carbon Steel | |||||||||
| Spring Material | Music Wire | |||||||||
| Spring Cup Material | Carbon Steel | |||||||||
| Cross Pin Material | Music Wire | |||||||||
| Stud Finish | Nickel Plate per AMS-QQ-N-290, Class 1, Type IV | |||||||||
| Wing Finish | Nickel Plate per Specification AMS-QQ-N-290, Class 1, Type IV | |||||||||
| Spring Finish | Cadmium Plate per AMS-QQ-P-416, Type II, Class 2 | |||||||||
| Spring Cup Finish | Nickel Plate per Specification AMS-QQ-N-290, Class 1, Type IV | |||||||||
| Cross Pin Finish | Cadmium Plate per AMS-QQ-P-416, Class 2, Type II | |||||||||
| L | 0.383-0.398 in | 0.413-0.428 in | 0.443-0.458 in | 0.473-0.488 in | 0.503-0.518 in | |||||
| S | 0.660 in | 0.690 in | 0.720 in | 0.750 in | 0.780 in | |||||
| Weight/100 | 1.510 lb | 1.540 lb | 1.610 lb | 1.6300 lb | 1.690 lb | |||||
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