7/16" UNF HSS Second Hand Tap Sutton 6505140 This greatly reduces the likelihood

This greatly reduces the likelihood of leakage around the valve cover flange area caused by fasteners being over-torqued

End diameter 9

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Avoid problems with lubrication

7/16" UNF HSS Second Hand Tap Sutton 6505140 This greatly reduces the likelihoodFor producing precision threads by hand tapping, ideal for through holes, General purpose use Suitable for materials up to 1000N mm2 Through & blind holes Suitable for both hand and machine operations Threads per inch 20 Overall length 85mm Cutting length 25mm Drill diameter 9. 8mm