Howmet| Items |
 26S40-1 26S40 Stud Assembly Knurled Head, Nickel Plated |
26S40-2 26S40 Stud Assembly Knurled Head, Nickel Plated |
26S40-3 26S40 Stud Assembly Knurled Head, Nickel Plated |
26S40-4 26S40 Stud Assembly Knurled Head, Nickel Plated |
26S40-5 26S40 Stud Assembly Knurled Head, Nickel Plated |
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| Series | 2600 | |||||||||
| Head Style | Knurled | |||||||||
| Stud Material | 4037 Alloy Steel per AMS 6300, ASTM A331, ASTM A752 or 8740 Alloy Steel per AMS-S-6040 or AMS 6322 | |||||||||
| Cup Material | Carbon Steel per ASTM A109 | |||||||||
| Spring & Cross Pin Material | Music Wire per ASTM A228 | |||||||||
| Stud & Cup Finish | Nickel Plate per QQ-N-290, Type IV, Class 1 | |||||||||
| Spring & Cross Pin Finish | Cadmium Plate per QQ-P-416, Type II, Class 2 | |||||||||
| Dash Number | 1.000 | 2.000 | 3.000 | 4.000 | 5.000 | |||||
| L | 0.511-0.526 in | 0.541-0.556 in | 0.571-0.586 in | 0.601-0.616 in | 0.631-0.646 in | |||||
| S | 0.690 in | 0.720 in | 0.750 in | 0.780 in | 0.810 in | |||||
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