Three Stage Right Hand Imperial HSS Tap 5/16-24 Fine Thread Insize Screw Thread Micrometer 3-4" Range Series 3281-4 This comprehensive kit features convenient

This comprehensive kit features convenient one-touch fittings that allow for instant tubing connections

Insize 3mm Dial Indicator

8" Calibration rod

Part No : 4121-3C2

Overall Dimensions: Length: 205mm

Three Stage Right Hand Imperial HSS Tap 5/16-24 Fine Thread Insize Screw Thread Micrometer 3-4" Range Series 3281-4 This comprehensive kit features convenientPlease note this is a 5 16 24 fine thread. This form of tap is ideal for tougher materials as the thread is formed in three stages as opposed to NON serial taps which form the thread in one pass. Specifications Material: HSS (High Speed Steel) BOTTOM TAPS have a chamfer (lead) of 12 threads, the angle of the lead being around 18 degrees per side. They are used to produce threads close to the bottom of blind holes. SECOND TAPS have a lead of 3 5