What materials are used for the drill bits?

The drill bits are made from High Speed Steel (HSS) including grades 4241, 4341, 6542, and M35.

What surface finishes are available?

Available finishes include Titanium coated, Bright, Black & Amber, Co-coated, Black Oxide, Black & Bright, and TiAIN.

Factory Direct Sale HSS 4241 Core Step Drill Bit 4-20mm Core Bit for Metal Drilling

Name: Factory Direct Sale HSS 4241 Core Step Drill Bit 4-20mm Core Bit for Metal Drilling
Brand: JIANGSU HAOKE MATERIAL TECH CO.,LTD
SKU: 2176814955

Jiangsu, ChinaJIANGSU HAOKE MATERIAL TECH CO.,LTD

US$1.15

500-4,999 Pieces

US$1.11

5,000+ Pieces

Product profile

Customization

Available

Customized

Standard

DIN

Length

Standard

Type

Core Drill Bit

Material

High Speed Steel

Usage

Wood Drilling, Metal Drilling, Plastics

Process

Fully Ground

Shank

Tri-Shank

Flute Type

Straight Shank,Spiral Shank

Surface

Bright,Amber,Black,Titanium Coated

Transport Package

Carton

Specification

4-12/4-20/4-32mm

Trademark

Customized

Origin

Danyang City, Jiangsu Province, China

Key features

Multi-Material Versatility: Perfect for drilling sheet metals, pipes, plexiglass, plastics, and wood up to 5mm thickness.

Extended Tool Life: Titanium coating provides up to 2 times the life compared to standard high speed steel bits.

Efficient Chip Removal: Two Flute Design ensures longer service life and superior chip removal performance.

Precise Hole Dimensions: Delivers exact hole dimensions for multiple holes in thin sections using a single tool.

Customizable Options: Offers customized process, shank types, flute types, and surface finishes like Titanium coating.

High Speed Steel Quality: Made from premium HSS materials (4241/4341/6542/M35) for durability and sharpness.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceSelf-brandedStandardized quality control

JIANGSU HAOKE MATERIAL TECH CO.,LTD

Jiangsu, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2006-11-11Nearest Port: Port of ShangHai, Port of NingBo, Port of QingDaoAverage Response Time: ≤2.07hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA

AI-Powered supplier vetting

SummaryJIANGSU HAOKE MATERIAL TECH CO., LTD is a China-based limited company identified as both a trading company and manufacturer/factory, specializing in cutting tools such as drill bits, milling cutters, hole saws, and saw blades. It reports production, quality control, packaging, storage, pre-delivery inspection, and after-sales systems, along with documented procedures for finished-product inspection and service capability. The supplier offers extensive customization and ODM services and reports OEM service for well-known brands. Export sales account for 90%, with self-operated import/export rights and stated lead times within 15 working days in both peak and off-season periods. However, it has no overseas warehouse, showroom, agent or branch, and no offline trade-show participation. No certification information, specific customer cases, or clear evidence of recent product innovation is provided. Financial records are referenced by year, but their contents are unavailable.

Supplier typeThe supplier is identified as a trading company and manufacturer/factory, legally organized as a limited company in Jiangsu, China. Its stated business scope includes new-material technology research, metal-product R&D, and related technical services, indicating both commercial and manufacturing-related activities.

After-Sales capabilityThe supplier states that it has a complete after-sales team and systems covering production management, quality control, packaging, storage, pre-delivery inspection, and after-sales service. It also reports written service procedures, followed records, and corrective/preventive-action procedures; however, it lacks overseas warehouses, showrooms, agents, and branches.

R&D capabilityThe supplier reports R&D-related business activities and offers ODM services plus design customization. However, it states that no new products were developed in the past year and has no available SDK, providing limited evidence of recent product innovation.

Production capacityThe supplier describes advanced technology and equipment and specializes in producing multiple cutting-tool categories. Its documented production, quality, storage, inspection, and service systems, in-stock capability, and stated lead times within 15 working days support operational production capability.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides ODM services, indicating broad stated capability to adapt or develop products according to customer requirements.

Product Q&A

Q:Is OEM available?

Yes, OEM and customization are available. Graved logo marker, Laser logo marker, customized packing, Printed Inner box, Carton box.

Q:Are samples available?

Yes, you can ask for some samples for testing after confirming our prices, but please pay the sample and freight fee, the sample fee will be returned to you after making an official order.

Q:What are the payment terms?

T/T, L/C, D/A, D/P, Paypal, Western Union, for different circumstances.

Q:What are the delivery methods?

Express delivery, air shipping, sea shipping are available for your request.

Q:What is the delivery time?

Usual delivery time is 5-10 days after receiving the advance payment; For the customized product, 15-30 days after receiving the advance payment.