Bordo Carbon Steel Tap 5/16in Unc Bottoming A-85709 The surround and spider have

The surround and spider have been carefully designed to prevent the INrCking modeIN phenomenon

Bit made from silicon alloy steel (S2)

Manufactured from heat treated high grade steel for superior strength and durability

69 32327 JB WELD ULTIMATE GREY RTV SILICONE 85G - J-B Weld ultimate grey gasket maker & sealant is an RTV (Room Temperature Vulcanized) silicone gasketing material designed for use in mechanical assemblies where higher torque or closely spaced bolt profiles can lead to higher loads and cause gasket and sealing failures for average silicones

chrome plated brass body for a better grip

Bordo Carbon Steel Tap 5/16in Unc Bottoming A-85709 The surround and spider haveBORDO CARBON STEEL TAP 5 16in UNC BOTTOMING Surface finish: bright Material: chrome alloy Flute type: straight bottoming Packaging: snap pack TPI: 18 Drill: 6. 60mm Overall length: 72mm Diameter: 5 16in UNC Product code: 4232 5 16B