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 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

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

HSS Threaded Shank Dovetail Cutters (Single Angle Cutters)

Designed to produce dovetail slideways in machine tool tables, jigs and fixtures. Bright finish, straight helix. Made to DIN1833. Shank to DIN 1835D.

60° Inverted - Metric (Form D)

Sherwood Dies

Sherwood UNC (Unified Coarse) HSS dies are used in diestocks to produce external screw threads.

Thread form to: BS 1580

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

Dies UNC (Unified Coarse) Ground Thread HSS

VBMT

Suitable for External Toolholders.

Indexa-Seiki ER - Collet Chucks

The Indexa-Seiki ER Collet chuck is manufactured as part of Europe's most popular collet system. The collapsing collet design can be used for a range of diameters and maintains concentricity for drilling and milling. Long reach options are also available to give access into deep recesses. Balanced to 12,000rpm. Max Tir 0.010mm. (BT BT-MAS 403)



To DIN 69871/A

Indexa-Seiki Tapping Chucks - Rigid Type (No Compression)

With through coolant. Suitable for use on CNC machines set up for rigid tapping.

For all dimensional specifications please refer to our catalogue.

MAS 403 BT Taper Shank

Starrett Bi-Metal Holesaws Constant Pitch HSS

Bi-Metal Constant Pitch Holesaws have 6 teeth per 25mm/inch with an aggressive cutting action, featuring a HSS cutting edge welded to a tough alloy steel body. The Constant Pitch provides a smooth cut on thinner gauge materials, with minimal tendency to bite or snag on contact with irregular surfaces. Cutting depth 41mm (1 5/8").

Holesaw and Arbor sizes:
14-25mm - use Arbor A4 or K4.
30-210mm - use Arbor A10 or K10.

Constant Pitch Bi-Metal HSS Holesaws

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