Three-Stage RH Imperial HSS Tap 3/8-20 BSF Fine Thread Maxwell HSS Slitting Saw 6"x 1 mm x 1" bore this square offers durability and

this square offers durability and corrosion resistance for everyday workshop use

Outside Micrometer: Range 0–25mm

providing versatile wiring solutions for a variety of projects

Its hardened steel construction ensures longevity and reliable performance

Imperial Welding Gauge

Three-Stage RH Imperial HSS Tap 3/8-20 BSF Fine Thread Maxwell HSS Slitting Saw 6"x 1 mm x 1" bore this square offers durability andPlease note this is a British Standard 3 8x20 Fine thread, or BSF. 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