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%

Rigid, high-heat resistant drill with large helix angle of 35. Suited for titanium and titanium alloys, stainless steels and heat resisting austenitic steels. Limited suitability for special alloys such as hastaloy, inconel, nimonic etc. Manufactured to DIN338.

Series 605 - Inch

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

Dormer Jobber Drills TiN Tipped

Dormer's A002 Jobber Drill has a standard helix, it is right hand and has wider flutes for efficient chip removal. 118 point geometry. TiN coated on the tip for high wear resistance, lower friction and allows increased cutting speeds. Suitable for general-purpose drilling.
The Dormer A002 Jobber drill delivers the following features and benefits:
Improved web design optimises strength and rigidity and increases feed capability
Ground wide flutes allow for efficient chip evacuation
Optimised throughout the helix range for greater rigidity
Bright body improves application on ductile materials
Titanium Nitride coating focused on the working surfaces to resist flank and crater wear, and to provide low friction and increased performance
Special Dormer P.S. Point increases ease of penetration, improves hole size and provides accurate centering
General purpose engineering drills
Manufactured to BS328:Part 1:1986.

Series A002

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

Sherwood Centre Drills HSS

Designed with spiral flutes and various lengths and forms to give high quality centre holes that suit most applications. 60 inclusive angle. Manufactured to BS328;Part 2:1986, DIN333A, ISO866, ISO2540, ISO2541.

For all dimensional specifications please refer to our catalogue.

Series C100

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

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

Kennedy® Stub Length Drills Carbide

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 DIN 6539.

Tolerances:
Cutting Dia. plus 0.000mm - 0.015mm.
Shank Dia. plus 0.000mm - 0.030mm.

Kennedy® Carbide Stub Length Drills - Metric

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