Cobalt HSS-E drill bits 4.1mm loose x10 DeWalt DT4925-QZ

What it is

The DeWalt DT4925-QZ is a supply of 10 metal drill bits with a diameter of 4.1 mm, made of HSS-E cobalt high-speed steel. The cobalt alloy makes this material particularly heat resistant, an important advantage when drilling hard or alloyed steels. The multipack is designed for those who use this size continuously and want immediate spares.

A metal drill bit is an HSS, cobalt or coated twist drill for drilling steel, cast iron, non-ferrous metals and plastic with a drill or drill driver.

What it is for

Used for drilling steel, stainless steel and aluminium, on a pillar drill or with a hand-held drill and in workshop machining of steel, aluminium and alloy parts.

How to use it

Mark the centre with a centre punch, clamp the workpiece and drill at a speed that is lower the larger the diameter and the harder the material. Maintain steady pressure, lubricate with cutting oil on steel and stainless steel and, for large diameters, drill a pilot hole first. Withdraw the bit frequently to clear the swarf, and never touch the swarf with bare hands.

Where it is used

• Mechanical engineering industry
• Mechanical workshops

Technical data

• Diameter (mm): 4,1
• Material: HSS-E cobalt
• Pack contents: 10 pieces

Who it is for

Designed for metal fabricators, industrial maintenance technicians and mechanics.

Related products

• Cobalt HSS-E drill bits 4.2mm loose x10 DeWalt DT4926-QZ
• Cobalt HSS-E drill bits 3mm loose x10 DeWalt DT4920-QZ
• Carbide scriber — from the category Scribers and Punches
• Pillar drill with magnetic base, 1200W, DeWalt DWE1622K-QS — from the category Pillar Drills
• Precision vice Fervi M028/200/300 — from the category Vices and Clamps
• Browse the whole category: Metal Drill Bits

Before you order

In your request, please state the diameter and the quantities required, so we can give you the right quotation first time.

For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.