Description: Hymnorq 1/2 Inch Fractional Size M35 Cobalt Steel Twist Drill Bit Set of 5pcs, Jobber Length and Straight Shank, Extremely Heat Resistant, for Drilling in Stainless Steel and Cast Iron COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit. FOR STAINLESS STEEL - Particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate. SELF-CENTERING - The 135° quick-cut split points are self-centered and will penetrate quickly with less pressure. No center punch is needed. Will not "walk" or "wander". 5PC SET - The set includes 5pcs of 1/2” diameter fractional inch size M35 grade cobalt steel twist drill bits, packed in a convinient plastic case. Total lenght: 5.98 inch; working length: 4.49 inch. DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download. M35 Grade Cobalt Steel Cobalt drill bits are not made of pure cobalt, but rather a steel alloy with certain percent cobalt. The 5-percent alloy is known as M35 grade. The cobalt increases the strength of the steel and makes it more heat-resistant. 135 Degree Split Point The flater the drill, the smaller the chip width. This means less force required to remove metal, compared with lower angles like 90° and 118°. This is important on hard stuff, because your power requirements are already more than mild steel, so making the chip load less helps. It also reduces heat since less surface area is generating the cut. Lowest Cost Per Hole Drilled Cobalt drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer. With an extended tool life, Hymnorq cobalt drill bits will give you the lowest cost per hole drilled. For Drilling Stainless Steel This set of M35 cobalt steel drill bits are particularly successful in cutting through hard metals such as stainless steel and cast iron, although they can be used for softer materials, too. Tests shows that the M35 cobalt steel drill bits can penetrate a 5mm-thick 304 stainless steel plate in 5 seconds. Not Suitable for Hardened Steel M35 grade cobalt drill bits are NOT suitable for hardened steel, high carbon steel and heat-treated steel by the experiences of some customers, although some others said they worked well with hardened steel. Cooling Liquid Required Please use with cooling liquid to prolong the working life of the drill bits and to avoid overheating and breakage. SHIPPING Domestic Buyers - We ship within 3 business days of payment, usually sooner - We offer FREE shipping on all orders! - We only ship to the lower 48 states, no APO/FPO addresses or PO Boxes allowed - We have confidence in our products, but if you are not fully satisfied please contact us within 30 days of purchase and you will get full refund. International buyers – please note: Import duties, taxes, and charges aren't included in the item price or postage cost. These charges are the buyer's responsibility. - Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. * Order Cancellation Policy ** You can return a product for up to 30 days from the date you purchased it. 1. The seller reserves the right to cancel the special case only due to eBay cancellation fee. 2. The decision of seller is the final. 3. The seller will respond to the cancellation request within 2 business days. Please wait for the result of cancellation. 4. In case the cancellation is not completed by some reasons, the buyer can follow the options below to get the refund. 4.1 The buyer can reject the item when it arrives. 4.2 The buyer can send the item back to the seller within 30 days If the buyer receives item (USA Shipment ONLY). The seller will provide the FREE return label to the buyer when the buyer opens " Return Item" case on eBay by using the reason as "Change my mind" ONLY. 5. When buyer has placed the order. The order will be processed and completed by automatic warehouse system within 5 minutes. In case that buyer sends the cancellation request after 5 minutes of placing the order, the request will be rejected.**Sending direct message to cancel the order is not allowed for every case.* Return Policy For the return case - If buyer would like to return the items for refund or replacement, please CONTACT SELLER to receive the free return label from seller. The refund or replacement will be processed with the tracking number of return label which is provided by seller only. The other ways of return which are not approved by seller will not be processed for the refund or replacement.
Price: 51.35 USD
Location: Alameda, California
End Time: 2025-01-13T12:03:04.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Color: Gold
Size: 1/2 in
Type1: Type1
Type2: Type2
EAN: 0733424628818
ISBN: 0733424628818
Package Dimensions LxWxH: 6.5x2.99x0.71 Inches
Weight: 1.25 Pounds
MPN: Does not apply
Model: Does not apply
Brand: HYMNORQ
