Quick view Add to Wishlist Flint Hills Trading Machine Key - 5/16"" x 5/16"" x 2-3/8"" - Form B - Steel - Plain - Undersize - ANSI B17.1 p/n 3003120312-2375 MACHINE KEY - 5/16"" X 5/16"" X 2-3/8"" - FORM B - CARBON STEEL - PLAIN - UNDERSIZE - ANSI B17.1 MACHINE KEYS ARE USED TO HOLD MACHINERY PARTS IN PLACE OR ALIGN COMPONENTS. THEY ARE SPECIFICALLY DESIGNED TO FAIL AS A SAFETY MECHANISM TO SAVE MORE... MSRP: $0.48 Add to Cart The item has been added Compare