5 mm HSS M35 Cobalt Step Drill Bit with Seven Steps Overall Length 86 mm Cylindrical Shank For Steel Iron and Stainless Steel
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The step drill bit with a diameter of 5 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. The tip features a seven-step design that gradually transitions to the full diameter. The spiral groove removes chips from the hole during drilling. The 5 mm diameter is one of the most commonly used sizes for assembling and repairing metal parts.
The drill measures a total of 86 mm, with a spiral working 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 bench drills. The shape of the seven-step tip and the spiral progression are captured in detailed photographs.
Unlike a standard spiral drill bit, 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 drill reaches the full diameter of 5 mm only after passing through all the steps. Thus, the hole is created in one step without pre-drilling with a thinner bit. The product photographs also show traces of the steps on the wall of the hole.
- Type – step drill bit
- Diameter – 5 mm
- Working Length – 52 mm
- Total 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 mm step 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 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 bit is also suitable for modifying strips and angles in a home workshop. Mark the centre of the hole in advance with a centre punch to prevent the drill bit from wandering at the start.
The 5 mm step drill bit is applicable in workshops, garages, and DIY metalworking. 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 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
Return shipping costsYou pay the postage for sending the goods back to Spain. With An Post (Standard Post), returning a parcel of up to 2 kg to Spain costs about €30. We charge no other fee.
RefundWithin 14 days of your notice of withdrawal, using the same payment method you used for the purchase. If you return the whole order, we will also refund the delivery cost.
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.
How do I return goods?
- Email us at info@lunzo.ie with your order number and the items you are returning.
- Pack the goods and send them by post to the returns address in Spain.
- Send us the proof of dispatch with the tracking number – this lets us refund you without waiting for the parcel to arrive.
Faulty goodsUp to 6 years to claim for faulty goods
Did the goods arrive damaged, do they not work, is something missing from the parcel or do they not match the description? We will sort it out.
Period for claiming a faultUp to six years from delivery of the goods
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- We will assess it and suggest a solution. Photographs are usually enough – please do not send the goods back until you have received instructions from us.
- We will settle your claim within 30 days at the latest – with a new item, a price reduction or a refund.
If the goods need to be sent back, we will refund the postage for a valid claim (just provide the receipt).
ExchangesA different size, colour or variant
Write to us within 30 days of receipt at info@lunzo.ie with your order number and the variant you are interested in. We usually reply within 24 hours.
If the variant is available, we will send you instructions for the exchange. You pay the cost of sending the original item back; the new variant will be sent to you at no further charge.
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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