5.2 mm HSS M35 Cobalt Step Drill Bit with Spiral Tip and Seven Steps Overall Length 86 mm Cylindrical Shank for Steel and Stainless Steel
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The step spiral drill bit with a diameter of 5.2 mm is designed for drilling holes in metal materials. It is made from high-speed steel HSS M35 with cobalt content, suitable for iron, structural steel, and stainless steel. At the tip, it features a seven-step point that gradually transitions to the full diameter. The spiral groove removes chips from the hole during drilling. The 5.2 mm diameter is a useful intermediate size for holes slightly larger than five millimetres.
The drill measures a total of 86 mm and the spiral working part has a length of 52 mm. This allows it to handle sheets, strips, angles, and metal profiles. The cylindrical shank fits into the chuck of cordless drills, mains drills, and pillar drills. The shape of the seven-step tip and the spiral path are captured in detailed photographs.
Unlike a conventional spiral drill, the tip of this model consists of seven steps with increasing diameters. The smallest step first drills a narrow hole, and each subsequent step slightly enlarges it. The full diameter of 5.2 mm is only achieved after passing through all steps. Thus, a hole is created in one go without the need for pre-drilling with a thinner drill. The product photographs also show the traces of the steps on the wall of the hole.
- Type – spiral drill bit with step tip
- Diameter – 5.2 mm
- Working Part Length – 52 mm
- Overall Length – 86 mm
- Material – high-speed steel HSS M35 with cobalt content
- Tip – seven steps gradually transitioning to full diameter
- Shank – cylindrical
- Usage – drilling into iron, steel, and stainless steel
- Package Contents – 1 piece of 5.2 mm step spiral drill bit
When drilling into steel and stainless steel, use cutting oil or coolant to reduce heat build-up at the tip. Adjust the speed according to the diameter of the drill bit and the hardness of the material, and keep the drill perpendicular to the surface without excessive pressure. After use, clean the drill bit of chips and oil residues and store it in a case or separately from other tools. The 5.2 mm diameter is useful for attaching metal brackets, hinges, and fasteners, drilling holes for screws and rivets in sheet metal parts, or repairing frames, shelves, and garden furniture. The drill is also suitable for modifications of strips and angles in a home workshop. Mark the centre of the hole beforehand with a centre punch to prevent the drill bit from slipping at the start.
The 5.2 mm step drill bit will find its use in the workshop, garage, and during DIY metalworking projects. The cobalt HSS M35 steel can also handle drilling into stainless steel. The seven-step tip gradually enlarges the hole to the full diameter. The cylindrical shank fits into any standard drill. The package contains one drill bit with a diameter of 5.2 mm.
Delivery
Delivery to address€1.99
Estimated delivery: 23 November – 4 December
Shipped from China
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Returns and Exchanges
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Returns30 days to return without giving a reason
Withdrawal period30 days from receipt of the goods
Deadline to send the goods backWithin 14 days of withdrawing from the contract
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Crediting of the amountUsually 2–10 working days, depending on the payment method
Product conditionYou may unpack the goods and try them as you would in a shop, and you can return them even without the original packaging
Returns addressQX-BOX AEMALL RETURN
Rotonda Rene Descartes, Parcela 101 – Nave 3
28070 Alcala de Henares, Madrid
SpainReturns centre in Spain operated by Qxbox, an e-commerce logistics provider and logistics partner of the sellers on our platform.
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About the seller
This product is sold and shipped by an external seller. LUNZO guarantees you a safe purchase: online payments go through a secure payment gateway, and you handle your order, returns and complaints with us.
The following information has been provided by the product seller, who is responsible for its accuracy. The seller acts as a trader.
Seller:
Gansu Constar Technology Group Co., Ltd.
Address: No.10, Chuangxin South Road, Baiyun District, Baiyun, Gansu, China
E-mail: ksdjt@foxmail.com
Telephone: +86 156 9392 3686
Manufacturer:
Gansu Constar Technology Group Co., Ltd.
Address: No.10, Chuangxin South Road, Baiyun District, Baiyun, Gansu, China
E-mail: ksdjt@foxmail.com
Telephone: +86 156 9392 3686
EU responsible person:
BioDomi GmbH
Address: Schokoladenring 13, 65795 Hattersheim am Main, Germany
E-mail: arcontact@biodomieurope.de
Telephone: +49 178 5749814
All products from this seller