Sherwood M3-M12/2.50-10.20MM HSS Ground Flute Tap & Drill Set - 28 Pieces
Sherwood HSS Taps are the general-purpose option for thread cutting in most materials including steel, some stainless steels, cast irons and non-ferrous materials such as Aluminium, Brass and many others.
Manufactured with precision ground flutes for producing accurate thread forms, Taps are available in all the popular thread forms and as straight Flute `Hand` Taps in 3 leads, Fluteless, Spiral Flute, or Spiral Point Machine Taps. Taps dimensions conform to ISO529 apart from NPT Forms which conform to ANSI 94.9. Machine Taps have an oxidised finish for best results dissipating the heat build-up associated with these applications. Thread Forms are Class 2 medium fit tolerance.
Sherwood jobber drills are general-purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. With precision ground flutes and black finish (W-finish), this is the most common surface finish and is the result of a steam tempering operation in which steam is passed over the product during a controlled tempering cycle, producing a black oxide layer. Black tools are generally recommended for ferrous applications where the oxide layer aids chip flow, helps to dissipate heat by retaining some coolant on the tool surface and also helps to prevent the tool from staining.
Point angle: 118, helix angle: normal, web thickness: standard, relief angle: 10-20, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to BS 328/DIN338RN.
Set contains:
Taps: M3, M4, M5, M6, M8, M10 and M12 (Taper, Second and Bottom).
Tapping Drills: 2.5mm, 3.3mm, 4.2mm, 5.0mm, 6.8mm, 8.5mm and 10.2mm.
