ZHANGJIAGANG FLAME MACHINERY CO.,LTD.
| Feature | Sharpness,High Speed.Straight Smooth Edge,Longer Working Life |
| Process | Fully Ground |
| Use | Metal Drilling |
| Application | Drilling Holes,Stainless Steel,concrete etc. |
| Material | HSS-M35 |
| Color | amber color |
| Packing | Aluminium case or as your request |
| Shank | Round/Three-flatted/Hex shank and so on |
| Payment Terms | L/C, D/P, T/T, Western Union |
| Supply Ability | 300,0000PCS PER MOUTH |
| Delivery Time | 30-45days |
| Packaging Details | metal box |
| Type | HSS Cobalt Twist Drill Bit |
| Product name | 13PCS Drill Bit Set |
| Brand Name | XRTOOLS |
| Model Number | 13PC |
| Certification | ISO9000 |
| Place of Origin | CHINA |
View Detail Information
Explore similar products
29 Piece Twist Drill Bit Set – HSS M2, Black Gold Coated, Fractional Sizes 1/16
M35 Cobalt HSS Drill Bit Kit (21pcs) – 135° Split Point, Fractional Sizes with
29PC High Speed Steel Drill Bits (1/16–1/2 in) – Black & Gold, Three Flat Shank,
M35 Cobalt 21-Pc Drill Bits for Steel & Stainless – 135° Split Point, Jobber
Product Specification
| Feature | Sharpness,High Speed.Straight Smooth Edge,Longer Working Life | Process | Fully Ground |
| Use | Metal Drilling | Application | Drilling Holes,Stainless Steel,concrete etc. |
| Material | HSS-M35 | Color | amber color |
| Packing | Aluminium case or as your request | Shank | Round/Three-flatted/Hex shank and so on |
| Payment Terms | L/C, D/P, T/T, Western Union | Supply Ability | 300,0000PCS PER MOUTH |
| Delivery Time | 30-45days | Packaging Details | metal box |
| Type | HSS Cobalt Twist Drill Bit | Product name | 13PCS Drill Bit Set |
| Brand Name | XRTOOLS | Model Number | 13PC |
| Certification | ISO9000 | Place of Origin | CHINA |
| High Light | 13 Pcs m35 drill ，m35 hss steel 1/16in ，hss steel drill bits | ||
For Hard Metal, Hardened Stainless Steel, and Cast Iron • Jobber Length • Round Shank
Built for difficult jobs, this 13-piece M35 cobalt HSS (≈5% Co) set uses a three-flute twist plus a 135° split point to bite instantly, self-center, and hold a stable path through hardened stainless, cast iron, and alloy steels. Fully-ground bodies control runout for rounder holes and longer life. Jobber-length round shanks fit any 3-jaw chuck; a compact metal index case keeps the kit organized.
Three-flute stability: Extra land support reduces chatter and ovality; chips break smaller—ideal for cast iron and austenitic stainless.
135° split-point: Self-centers, reduces walking on curved/painted surfaces, lowers thrust at breakthrough.
M35 cobalt core: High red-hardness maintains a sharp edge at temperature; optional TiAlN/AlTiN coatings for extreme duty.
Precision-ground flutes: Better concentricity and smoother chip evacuation = cleaner holes and fewer regrinds.
Pro tip: On stainless and deep holes, run lower RPM with cutting oil and peck to manage heat and chips.
Automotive/MRO: Drilling out broken studs/bolts (extractor prep), exhaust/manifold brackets, chassis/frame work, stainless trim, accessory mounts.
Fabrication/Metalwork: Fixture plates, angle/channel, enclosure panels, tap-drill pilots for threading hard steels.
Cast Iron Components: Gearbox housings, pump bases, machine feet—controlled entry/exit with reduced edge chipping.
Electrical/HVAC: Panel knockouts (pilot), stainless cabinets, bracket and conduit mounts.
Maintenance Teams: Plant repairs on alloy steel frames, guard rails, tool steel fixtures (when hardness permits).
| Feature | Details |
|---|---|
| Material | HSS-Cobalt M35 (~5% Co) |
| Geometry | Three-flute twist, 135° split-point (web-thinned) |
| Body | Fully ground for tight runout and clean surface finish |
| Length Type | Jobber (ANSI / DIN 338 equivalent) |
| Shank | Round, fits standard 3-jaw chucks |
| Finish | Bright ground (optional: TiAlN / AlTiN / Black & Gold) |
| Recommended Materials | Hardened stainless (304/316), alloy & carbon steels, cast iron, non-ferrous |
| Storage | Metal (or heavy-duty ABS) indexed case with labeled sizes |
| Resharpenable | Yes — maintain split-point and 3-flute symmetry |
| Size (in) | Metric (mm) | OAL (in) | FL (in) |
|---|---|---|---|
| 1/16 | 1.59 | 1.875 | 0.875 |
| 5/64 | 1.98 | 2.000 | 1.000 |
| 3/32 | 2.38 | 2.250 | 1.125 |
| 7/64 | 2.78 | 2.375 | 1.250 |
| 1/8 | 3.18 | 2.750 | 1.625 |
| 9/64 | 3.57 | 2.875 | 1.750 |
| 5/32 | 3.97 | 3.000 | 2.000 |
| 11/64 | 4.37 | 3.125 | 2.125 |
| 3/16 | 4.76 | 3.500 | 2.375 |
| 13/64 | 5.16 | 3.625 | 2.500 |
| 7/32 | 5.56 | 3.750 | 2.625 |
| 15/64 | 5.95 | 3.875 | 2.750 |
| 1/4 | 6.35 | 4.000 | 2.750 |
| Material | Speed Guidance | Coolant |
|---|---|---|
| Hardened Stainless (304/316) | Low–moderate RPM; steady feed; peck on deep holes | Cutting oil required |
| Alloy/Carbon Steel | Moderate RPM; avoid rubbing | Cutting oil recommended |
| Cast Iron | Moderate RPM; controlled feed | Dry or minimal oil |
| Aluminum/Brass | Higher RPM; light feed | Light oil optional |
Indexed case (metal/ABS), retail sleeve + barcode; master cartons for distributors.
Private label: laser-etched logo, custom size maps, coatings, bilingual EN/RU labels & spec sheets.
Q1: Three-flute vs. two-flute — what’s the benefit?
The third flute adds rigidity and reduces chatter, producing rounder holes and smaller chips in hard materials; feed rates may be slightly lower than 2-flute in deep drilling.
Q2: Will these handle hardened stainless?
Yes. Use lower RPM, cutting oil, and peck cycles. For extreme hardness (>HRC 45), consider M42 cobalt.
Q3: Impact-driver compatible?
Round shanks are for 3-jaw chucks. Ask for hex-shank versions if needed.
Q4: Can I get TiAlN coating?
Yes—TiAlN/AlTiN coatings are available for higher heat resistance and dry cutting.
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2018
Total Annual:
500-600
Employee Number:
135~150
Ecer Certification：
Verified Supplier
Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in Danyang, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We speciali... Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in Danyang, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We speciali...
Get in touch with us
Leave a Message, we will call you back quickly!