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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £5.99 | 2 to 4 working days |
| Next Day | £9.99 |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £22.95 | 5 to 7 working days |
Product Number: DB040CB
Drilling through high carbon steel or stainless steel pushes standard HSS drill bits hard heat builds quickly, the cutting edge degrades and bits fail prematurely, costing time and money. The Sealey DB040CB addresses this with a fully ground HSS Cobalt construction manufactured to DIN 338. The addition of 5% Cobalt increases heat hardness, helping to extend the working life of each bit when tackling demanding materials. The 135° split point is self-centring, reducing thrust for easier penetration, while efficient clog-free swarf clearance keeps the flutes clear and performance consistent throughout the cut. At 4mm, this is a versatile size for both fabrication and maintenance work on hard metals. Each pack of 10 is supplied in a high-density case for safe storage.
Key Features:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Model No | DB040CB |
|---|---|
| Brand | Sealey |
| Nett Weight | 0.06kg |
| Pack Qty | 10 |
| Size | Ø4mm |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Standard Delivery: £5.99
Next Day Delivery Available
Delivery Estimate: 2 to 4 working days
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| Technical Specification | |||||
|---|---|---|---|---|---|
| PRODUCT NUMBER | DBCB04002 | DBCB04010 | DBCB04210 | DB035CB | DB045CB |
| Type | Cobalt Drill Bit | Cobalt Drill Bit | Cobalt Drill Bit | Cobalt Drill Bit | Cobalt Drill Bit |
| Size | 4mm | 4mm | 4.2mm | 3.5mm | 4.5mm |
| Pack Qty | 1 | 1 | 1 | 10 | |
| Size Range | Up to 10mm | Up to 10mm | Up to 10mm | Up to 10mm | Up to 10mm |
| Suitable For | Metal | Metal | Metal | ||
A. Each drill bit is Ø4mm.
A. The DB040CB is manufactured to DIN 338.
A. They are suitable for drilling high carbon steel and stainless steel.
A. The 5% Cobalt gives increased heat hardness, which helps extend the life of the drill bit when working on hard or heat-generating materials.
A. The 135° split point is self-centring, which helps to reduce thrust and aids easier penetration into the workpiece.
A. The pack contains 10 drill bits, supplied in a high-density case for safe storage.
A. Yes. Variants at Ø4mm include DB040FG (HSS fully ground) and DB040RF (HSS roll forged). These are different versions of a Ø4mm drill bit rather than cobalt construction.
A. Yes. Alternative cobalt drill bits in different diameters include DB010CB, DB015CB, DB020CB, and DB025CB.
A. WhatsApp us on 07754 288583 with photos of the item and packaging, and we'll resolve the issue in line with our returns policy.
A. Yes - WhatsApp us on 07754 288583 with any questions about specifications, suitability, or compatibility, and we'll help you choose the right product.
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