Sherwood Reduced Shank Drills (Blacksmiths) - 1/2" Parallel Shank HSS

General-purpose drills for light duty work, for drilling steels, cast iron, nickel brass and graphite. Reduced parallel shank 1/2". Point angle 118, helix angle: normal, web thickness: standard, tolerance of diameter: h8, tolerance of shank: -0.01/0.08. Manufactured to BS328. Fracturing of the drill shank may occur if it is used for any other purpose or if extreme pressure is exerted on the drill.

For all dimensional specifications please refer to our catalogue.

Metric

All sizes will fit into a 13mm/1/2" chuck.

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® Centre Drills Solid Carbide

Used to produce 60° centres in components for subsequent manufacturing operations to be carried out. Tool life is extended and difficult materials may be drilled.
60° included angle.
118° drill point.
Manufactured to BS 328.
Tolerances:
Cutting diameter 0.0005
Shank diameter 0.0010
For all dimensional specifications please refer to our catalogue.

Sherwood 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 T100 (MT2) - Metric

Sherwood Stub Drills Bright Finish 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 BS 328: Part 1: 1986/DIN 1897.

Stub Drills Bright Finish HSS - Metric

Sherwood® Solid Carbide Drills

Sherwood Solid Carbide Stub Drills are suitable for drilling into steel, cast steel, cast iron, chilled cast iron, malleable cast iron, non-ferrous materials and abrasive plastic.
Point angle: 118°, helix angle: 30°, tolerance of diameter: h7, tolerance of shank: h6.
Manufactured to Works Standard.

Solid Carbide Stub Drills

Sherwood® Jobber Drills Solid Carbide

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.

Series J102 - Metric

Sherwood® Spotting Drills Solid Carbide

Sherwood 90° solid carbide spotting drills are designed for close tolerance hole location, Carbide spot drills are more wear resistant than HSS spot drills. Suitable for continuous production on Aluminium, Plastics, Free Cutting Steels, Cast Iron, Titanium and some Aerospace materials. The stability of Carbide makes the tool more rigid and is less likely to deflect, maintaining a higher level of accuracy. Operators should note that continuous heavy shock loading may cause the tool to fail due to its brittleness.

For all dimensional specifications please refer to our catalogue.

90°

Sherwood Bell-Type Centre Drills HSS

Manufactured to BS328;Part 2:1986, DIN333, ISO2540.
The "B" type Centerdrill is a dual-purpose drill which includes a 60º angle for burnishing and a 120º shoulder for chamfering. This drill is used for the heaviest of work applications.
For all dimensional specifications please refer to our catalogue.

Inch Series

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