SwissTech Parabolic Deep Hole Drills HSS-Co 8% TiN Coated

Parabolic flute form drill with high heat resistance to Non Alloyed and Alloyed Steels. Chipbreaking point performs well on long chipping materials with a tensile strength up to 1,300 N/mm2. Drills up to 5 x diameter. TiN coating provides longer tool life. Manufactured to DIN338RN. Point angle: 130. Helix angle: Normal. Web thickness: Strengthened. Relief angle: Normal. Tolerance of diameter: h8. Tolerance of shank: f11. Supply unit. All diameters - 1 Pce.

Series 1050 - Metric

Dormer Drills Taper Shank HSS

General-purpose drills to drill steels with a tensile strength up to 1.000 N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite. Point angle: 118°, helix angle: normal, relief angle: normal, tolerance of diameter: h8. Manufacturing Standard: DIN345.

For all dimensional specifications please refer to our catalogue.

Series A130 (MT1) - Metric

Dormer Jobber Drills Solid Carbide

General-purpose carbide drills. 120 four-facet point for accurate centering and improved hole quality. Bright finish.

Series R100 - Metric

Senator® Jobber Drills HSS Roll Forged

Senator® jobber drills are roll forged from HSS, ensuring uninterrupted grain structure. This provides exceptional strength and durability. Tips are ground for effective cutting. Suitable for drilling wood, plastic, carbon and plain steels where the cutting efficiency of ground flute is not required. Manufactured to BS 328 : Part 1 : 1986 & DIN 338 Type N.

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

Guhring Production Jobber Drills HSS-Co 5%

Solid Carbide Jobber drills are especially suitable for drilling cast steels, grey cast iron, chilled cast iron, austenitic manganese steels, bronzes, light metals and non-ferrous metals. Furthermore suitable for the economic machining of abrasive materials (AlSi-alloys), fibre-reinforced plastics and other Duroplastics liable to cause severe abrasion on cutting lips and lands.

Series 5517 - Metric

SwissTech Jobber Drills HSS TiN Coated

General-purpose drill, to drill steels with a tensile strength up to 1,000N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite. TiN coating provides longer tool life. Point angle: 118. Helix angle: Normal. Web thickness: Normal. Relief angle: Normal. Tolerance of diameter: h8. Tolerance of shank: f11. Manufactured to DIN338RN.

Series 1001

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

Guhring 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 205

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.