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.

SwissTech Jobber Drills HSS TiN Tipped

Bright body with TiN coating on working part. For drilling in steel, cast steel alloyed and non alloyed, grey cast iron, graphite and malleable cast iron. Point angle: 118. Helix angle: Normal. Web thickness: Standard. Relief angle: Normal. Tolerance of diameter: h8. Tolerance of shank: f11. Manufactured to DIN338.

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

Kennedy Drills for Stainless Steel HSS-Co 8%

Deep hole drill with high heat resistance to drill non alloyed and alloyed steels as well as long chipping materials with tensile strength up to 1,300N/mm2. Special point design with web thinning form S optimised chip breaking and reduced feed force and torque. Ample chip space enables drilling over five times diameter deep without pecking. Point angle: 130. Helix angle: High. Web thickness: Strengthened. Relief angle: Normal. Tolerance of diameter: h8. Tolerance of shank: f11. Manufactured to DIN338.

Drills for Stainless Steel HSS-Co 8% - Metric

Sherwood Drills Taper Shank HSS

Suitable for single and multi-spindle drilling machines. The taper shank being the engineering industries recognised standard and most widely used method for holding and driving cutting tools. Manufactured to BS328;Part 1:1986, DIN345RN, DIN343RN.

For all dimensional specifications please refer to our catalogue.

Series T100 (MT4) - 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

Kennedy Heavy Duty Drills for Stainless Steel HSS-Co 8%

Heavy-duty drill made of 8% cobalt material with excellent heat resistance. To drill steels with tensile strength up to 1,400 N/mm2, very hard bronze, stainless steels as well as heat and acid resistant steels. Point Angle: 135. Helix angle: Normal. Web thickness: Strengthened. Relief angle: Normal. Tolerance of diameter: h8. Tolerance of shank: f11. Manufacturing Standard: DIN338.

HSCo Heavy Duty Drill For Stainless Steel - Series XT34 - Metric

Guhring GT100 Long Series Drills HSS

A robust drill for drilling deeper holes in difficult conditions when swarf congestion prevents an adequate flow of coolant from reaching the drill point. For use in steel and cast iron having a hardness of up to 1000N/mm2. Manufactured to DIN340.

For all dimensional specifications please refer to our catalogue.

Series 535 - Metric

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

Dormer Stub Drills HSS TiN Tip Coated

Designed for increased productivity and tool life compared to standard stub drills. TiN coating has been applied to 35%-50% of the flute length (dependent on drill diameter) to keep cost down and lower the cost per hole. The 135 split point is advantageous for the pre-drilling of rivets and for drilling in sheet metal. Suitable for drilling alloy steel, carbon steels, cast iron, titanium and aluminium. Manufactured to DIN1897, ANSI.

Series A022 Stub Drill HSS TiN Tip Coated - Metric