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Master Keys / Acme Serrated / Square Serrated
4140
  • Material: 4140
  • Finish: Black Oxide
  • Heat Treat: Rc 40-45
master keys schematic
Part Number   Screw Cap
A B C D E F G
W15944 1.030 1 11/16 1/2 0.13 0.093 0.25 5/16 - 18x1/2
W15947 1.530 2 7/16 1/2 0.13 0.093 0.25 3/8 - 16x3/4
W15948 1.530 2 7/8 1/2 0.13 0.093 0.25 3/8 - 16x3/4


master keys 4140
  • Material: 4140
  • Finish: Black Oxide
  • Heat Treat: Rc 40-45
master keys schematic
Part Number   Screw Cap
A B C D E F G
W15942 .995 1 11/16 1/2 0.13 0.124 0.25 5/16 - 18x1/2
W15943 1.478 2 1/4 1/2 0.13 0.124 0.25 3/8 - 16x3/4
W15949 1.531 2 7/16 1/2 0.13 0.124 0.25 3/8 - 16x3/4

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Willow Tool & Machining, LTD. 15100 Foltz Industrial Parkway Strongsville, OH 44149 | 1-440-572-2288