Sherwood Ground Flute Jobber Drill Sets HSS

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.

Supplied in indexing metal cases. Point angle: 118, helix angle: normal, web thickness: standard, relief angle: 10-20, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to BS328/DIN338RN.

Ground Flute Jobber Drill 51 Piece Set HSS - Metric

Set contains: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5. 3.6, 3.7, 3.8, 3.9, 4.0, 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9, 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6, 5.7, 5.8, 5.9 and 6.0mm.

Sherwood Drill Blanks HSS

Jobber length blank hardened and ground all over. Accurately ground without back taper. Diameter Tolerance: h8. Manufactured to DIN 338.

Series J400

Sherwood Jobber Drills Steam Tempered HSS

Suitable for drilling steel, cast steel, alloyed and unalloyed, grey cast iron, spheroidal iron, sintered powder metal, German silver and graphite. Manufactured to BS328/DIN338RN.

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.

Series J100

Sherwood Gauge Drills HSS Steam Tempered

General purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. Point angle: 118, helix angle: normal, web thickness: standard, relief angle: 8 - 20, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to ANSI B328, BS 328 and DIN 338.

Number & Letter Gauge Drills:
Gauge drills are still in common use in the U.S. In the past, they were popular elsewhere, but now have been largely discarded in favour of metric sizes. When using a gauge rather than a standard measurement of size the user has to refer to a table of gauge sizes. For example, to drill a hole which is 10 thou (thousandth of an inch .0010) bigger than a 1/8 inch bolt, the user must first work out that 1/8 inch is 125 thou, so the hole size needed is 135 thou, and then must look up in a reference book which gauge drill bit is closest to this diameter - a number 29. Number gauge sizes are similar or equivalent in some respects to, but different from, American wire gauge. Number gauge is usually used from size 80 (the smallest) to size 1 (the largest) followed by letter gauge size A (the smallest) to size Z (the largest). Number gauge is actually defined down to size 97, but these smaller sizes are rarely encountered. It happens that as the technology for making small drill bits and drilling small holes has become more available, metric drills have become the norm.

For all dimensional and technical specifications please refer to our catalogue.

Series J100 - Gauge Sizes

Sherwood Long Series Drills Steam Tempered HSS

General-purpose drills to drill steels with tensile strength up to 1,000N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite. Point angle: 118, helix angle: normal, web thickness: normal, relief angle: 10-20, tolerance of diameter: h8, tolerance of f11. Manufactured to BS328;Part 1:1986, DIN340RN, ISO494.

For all dimensional specifications please refer to our catalogue.

Series L100 - Metric

Sherwood Stub Drills HSS

General-purpose drills for use on automatics and turret lathes. Suitable for drilling steels, cast iron, alloy steel and malleable cast iron. Point angle: 118, Helix angle: Normal, Web thickness: standard, Relief angle: 10-20, Tolerance of diameter: h8, Tolerance of shank: f11. Manufactured to BS328:Part 1:1986/DIN338.

Series S100

Sherwood Jobber Drills Bright Finish HSS

General-purpose drills for steel, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. Point angle 118, helix angle: normal, web thickness: standard, relief angle: 10-20, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to BS328/DIN338RN. Bright finish: drills with a bright finish are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials.

Series J100 - Metric - Bright Finish

Sherwood Stub Drills HSS

General-purpose drills for use on automatics and turret lathes. Suitable for drilling steels, cast iron, alloy steel and malleable cast iron. Point angle: 118, Helix angle: Normal, Web thickness: standard, Relief angle: 10-20, Tolerance of diameter: h8, Tolerance of shank: f11. Manufactured to BS328:Part 1:1986/DIN338.

Series S100

Sherwood Long Series Drills HSS

General-purpose high speed steel long series drills are designed for deep hole drilling of most materials. The drill has the same diameter on both the fluted section and the shank. Manufactured to BS328;Part 1:1986, DIN340RN, ISO494.

For all dimensional specifications please refer to our catalogue.

Series L100 - Inch

Sherwood Jobber Drills Steam Tempered HSS

Suitable for drilling steel, cast steel, alloyed and unalloyed, grey cast iron, spheroidal iron, sintered powder metal, German silver and graphite. Manufactured to BS328/DIN338RN.

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.

Series J100