{"id":1179,"date":"2025-11-11T11:44:01","date_gmt":"2025-11-11T11:44:01","guid":{"rendered":"https:\/\/hycuttingtools.com\/?post_type=product&p=1179"},"modified":"2026-09-28T08:46:21","modified_gmt":"2026-09-28T08:46:21","slug":"cobalt-hss-drill-set-stainless-steel","status":"publish","type":"product","link":"https:\/\/hycuttingtools.com\/id\/produk\/cobalt-hss-drill-set-stainless-steel\/","title":{"rendered":"Cobalt HSS Drill Bits for Stainless Steel"},"content":{"rendered":"
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Ikhtisar Produk<\/h2>\n<\/div>\n
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The DIN Standard Cobalt HSS Twist Drill for Stainless Steel<\/strong> is a jobber-length, straight-shank drilling tool designed for repeatable professional metalworking. Its DIN 338 dimensional format makes diameter and length selection straightforward, while M35 high-speed steel with approximately 5% cobalt provides better hot hardness and wear resistance than conventional general-purpose HSS when cutting stainless steel and other demanding metals.<\/p>\n

Fully ground flutes provide accurate geometry and a smooth chip path. A 135\u00b0 split-point option helps reduce drill walking and cutting pressure, while a regular point is available for general drilling requirements. For additional materials, coatings, and HSS grades, compare the M2\/M35\/M42 coated HSS twist drill series<\/a>.<\/p>\n

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DIN 338<\/div>\n
Jobber-length straight-shank format<\/div>\n<\/div>\n
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M35 \/ 5% Co<\/div>\n
Cobalt HSS for improved heat resistance<\/div>\n<\/div>\n
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135\u00b0 Split Point<\/div>\n
118\u00b0 regular point also available<\/div>\n<\/div>\n
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D4.0 mm<\/div>\n
Reference size range shown below<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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\"HSS

HSS drill family reference. Rolled, fully ground, bright, black-oxide, titanium-coated, straight-shank, taper-shank, center-drill, and spot-drill formats are shown. The ordered cobalt twist-drill construction and finish should be confirmed by model.<\/p>\n<\/div>\n

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Why M35 Cobalt HSS for Stainless Steel?<\/h2>\n<\/div>\n
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Improved Hot Hardness<\/div>\n
Cobalt helps the cutting edge retain hardness when heat builds during stainless-steel drilling.<\/div>\n<\/div>\n
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Wear-Resistant Cutting Edge<\/div>\n
M35 provides a practical balance of toughness and wear resistance for workshop and production use.<\/div>\n<\/div>\n
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More Stable Cutting<\/div>\n
A sharp, fully ground geometry supports steady chip formation when speed, feed, and coolant are correctly applied.<\/div>\n<\/div>\n
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DIN-Based Selection<\/div>\n
Standardized diameter and length groups simplify replacement, inventory, and repeat ordering.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Point Geometry & Ground Construction<\/h2>\n<\/div>\n
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135\u00b0 Split Point<\/div>\n
Helps the drill start with less walking and lower thrust. A 118\u00b0 regular point is available for general-purpose applications.<\/div>\n<\/div>\n<\/div>\n
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Fully Ground Geometry<\/div>\n
Precision-ground flutes and body geometry support accurate guidance, consistent cutting edges, and smoother chip flow.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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DIN 338 Size & Length Chart<\/h2>\n<\/div>\n
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Reference dimensions in millimeters. Diameter groups share the same nominal flute and overall length.<\/p>\n<\/div>\n

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Diameter D (mm)<\/th>\nFlute Length l (mm)<\/th>\nOverall Length L (mm)<\/th>\n<\/tr>\n<\/thead>\n
0.4<\/td>\n5<\/td>\n20<\/td>\n<\/tr>\n
0.5<\/td>\n6<\/td>\n22<\/td>\n<\/tr>\n
0.6<\/td>\n7<\/td>\n24<\/td>\n<\/tr>\n
0.7<\/td>\n8<\/td>\n28<\/td>\n<\/tr>\n
0.8<\/td>\n10<\/td>\n30<\/td>\n<\/tr>\n
0.9<\/td>\n11<\/td>\n32<\/td>\n<\/tr>\n
1.0<\/td>\n12<\/td>\n34<\/td>\n<\/tr>\n
1.1<\/td>\n14<\/td>\n35<\/td>\n<\/tr>\n
1.2<\/td>\n18<\/td>\n38<\/td>\n<\/tr>\n
1.3<\/td>\n16<\/td>\n38<\/td>\n<\/tr>\n
1.4<\/td>\n18<\/td>\n40<\/td>\n<\/tr>\n
1.5<\/td>\n20<\/td>\n40<\/td>\n<\/tr>\n
1.6-1.7<\/td>\n20<\/td>\n43<\/td>\n<\/tr>\n
1.8-1.9<\/td>\n22<\/td>\n46<\/td>\n<\/tr>\n
2.0-2..1<\/td>\n24<\/td>\n49<\/td>\n<\/tr>\n
2.2-2.3<\/td>\n27<\/td>\n53<\/td>\n<\/tr>\n
2.4-2.6<\/td>\n30<\/td>\n57<\/td>\n<\/tr>\n
2.7-3.0<\/td>\n33<\/td>\n61<\/td>\n<\/tr>\n
3.1-3.3<\/td>\n36<\/td>\n65<\/td>\n<\/tr>\n
3.4-3.7<\/td>\n39<\/td>\n70<\/td>\n<\/tr>\n
3.8-4.2<\/td>\n43<\/td>\n75<\/td>\n<\/tr>\n
4.3-4.7<\/td>\n47<\/td>\n80<\/td>\n<\/tr>\n
4.8-5.3<\/td>\n52<\/td>\n86<\/td>\n<\/tr>\n
5.4-5.0<\/td>\n57<\/td>\n93<\/td>\n<\/tr>\n
6.1-6.7<\/td>\n63<\/td>\n101<\/td>\n<\/tr>\n
6.8-7.5<\/td>\n69<\/td>\n109<\/td>\n<\/tr>\n
7.6-8.5<\/td>\n75<\/td>\n117<\/td>\n<\/tr>\n
8.6-9.5<\/td>\n81<\/td>\n125<\/td>\n<\/tr>\n
9.6-10.6<\/td>\n87<\/td>\n133<\/td>\n<\/tr>\n
10.7-10.8<\/td>\n94<\/td>\n142<\/td>\n<\/tr>\n
11.9-13.2<\/td>\n101<\/td>\n151<\/td>\n<\/tr>\n
13.3-14.0<\/td>\n108<\/td>\n160<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
Dimensions are reference values transcribed from the supplied size chart. Confirm exact stock diameter, shank style, point geometry, finish, packaging quantity, and availability before ordering. Reduced-shank options may be available for selected larger diameters.<\/div>\n<\/div>\n

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Stainless-Steel Drilling Recommendations<\/h2>\n<\/div>\n
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\"Cobalt