Dormer 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 A100

Sherwood Extra Length Drills Taper Shank HSS

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. Point angle to BS328 PTI 1986.

For all dimensional specifications please refer to our catalogue.

1 Morse Taper - Metric

Manufactured to Sherwood Standard

A520 - HSS ADX TiN Coated Stub Drills

Designed for use where high productivity and accuracy are required. Unique flute geometry. 130° point angle. TiN coating for increased tool life & performance. Manufactured to DIN1897.

Guhring GV120 Heavy Duty Stub Drills HSS-Co

Manufactured to Type GV120 DIN1897.

Series 329

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 - Number Sizes

Sherwood Long Series Drills 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. Bright finish; drills are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials.

For all dimensional specifications please refer to our catalogue.

Series L100 - Metric

Bright finish.

Sherwood Long Series Drills 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. Bright finish; drills are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials.

For all dimensional specifications please refer to our catalogue.

Series L100 - Metric

Bright finish.

Sherwood® Printed Circuit Board Drills Solid Carbide

Suitable for drilling through printed circuit boards. Shank diameter: 3.175mm, 38mm overall length. Manufactured to DIN1899.

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

Sherwood® Solid Carbide Drills

General-purpose drills for drilling a wide variety of metallic and non-metallic materials. Point angle: 118°. Tolerance of diameter: h7. Tolerance of shank: h6. Supply unit. All diameters - 1 pce. Manufacturing Standard: BS 328, DIN 338.

J102 Solid Carbide Jobber Drills

Guhring Jobber Drills HSS Steam Tempered

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 205