What surface treatments are available?

Surface treatments include Bright (Titanium Coated), Black Oxide, Amber Color, Black & Gold, Black & Bright, Rainbow, and Black Nitrided.

What is the warranty or quality guarantee?

We implement strict quality control checks throughout the manufacturing process, from raw materials to finished products, ensuring that each drill meets our rigorous standards.

4241 HSS Straight Shank Twist Drill Bit – Black Nitrided

Name: 4241 HSS Straight Shank Twist Drill Bit – Black Nitrided
Brand: Zhejiang ZhengCheng lmport & Export Co.,LTD
SKU: 1923525106

Zhejiang, ChinaZhejiang ZhengCheng lmport & Export Co.,LTD

US$0.50-5.00

20 Piece

Sample price:US$3.00/piece.Request sample

Product profile

Customization

Available

Customized

Standard

GB/T

Model NO.

HSS 4241/4341

Length

Standard Length

Type

Twist Drill Bit

Material

High Speed Steel

Usage

Metal Drilling

Unit Price

Customized Support

OEM, ODM

Surface Treatment

Black Nitrided

Application

Drilling in Metal / Wood / Plastic

Transport Package

Plastic Box or Your Requriement

Specification

Standard Sizes or Customized

Trademark

ZEICIN

Origin

China

HS Code

8207509000

Key features

High Precision HSS Material: Made from industrial-grade 4241 high-speed steel for sharp edges and clean holes.

Black Nitrided Coating: Enhances wear and corrosion resistance for long-lasting performance.

OEM/ODM Customization: Accepts custom designs based on customer drawings or images with sample approval.

Anti-Slip Design: Precise blade opening ensures accurate positioning and reduces slippage.

Optimized Chip Removal: Fine spiral design allows smooth debris clearance and efficient drilling.

Versatile Material Application: Suitable for drilling stainless steel, copper alloys, aluminum, and plastic.

High Fracture Resistance: Reinforced design prevents breakage during high-intensity drilling operations.

Strict Quality Control: Advanced testing facilities ensure every product meets rigorous durability standards.

Company profile

Zhejiang ZhengCheng lmport & Export Co.,LTD

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2019-03-26Nearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤1.00hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, EXW, CIF

AI-Powered supplier vetting

SummaryThe supplier is a limited trading company with five employees, focused on steel raw materials, cutting tools, and plastic raw materials. It has self-operated import/export rights, six years of export experience, and exports reportedly account for 90% of total sales. The supplier offers OEM and ODM services, has introduced new products within the past year, and supports extensive customization from samples, designs, or full specifications. However, it has no available SDK, overseas showroom, overseas agents or branches, or offline trade-show participation. Service-management controls are weakly documented: no written corrective-action, complaint-handling, supplier-assessment procedures, or approved-supplier list were identified. Raw-material traceability, quality assurance, sustainability documentation, and fire-drill status remain unknown. A CTI audit record is provided for the period from 2025-05-10 to 2026-05-09, but the stated evaluation result is not interpretable without a defined scoring scale.

After-Sales capabilityThe supplier has no overseas showroom, agents, branches, or stated overseas service countries, and it has not participated in offline trade shows. It also lacks written complaint-handling and corrective/preventive-action procedures, while its service-capability assessment procedure has no written procedures or records, indicating limited documented after-sales infrastructure.

R&D capabilityThe supplier reports new products within the past year and offers ODM services, supporting some product-development capability. However, it reports no available SDK, so its innovation capability is evidenced for product development and design services but not for SDK-based technical integration.

Customization capabilityThe supplier explicitly provides customization from samples, customization from designs, full customization, minor customization, and flexible customization. These services are reported in multiple slices and directly demonstrate broad customization coverage.

Client casesThe supplier reports providing OEM services for well-known brands, which is direct evidence of at least one type of customer engagement. No brand names, project details, product quantities, performance records, or additional customer cases are provided.

Product Q&A

Q:Are you a manufacturer or a trading company?

Yes, we are a manufacturer specializing in the production of high-speed steel cutting tools, equipped with advanced international machinery.

Q:What is your delivery time?

The usual delivery time for standard products is 5-15 days after receiving the advance payment. For customized products, the delivery time is usually 15-30 days after receiving the advance payment.

Q:What is the shipping port?

We ship goods via the ports of Shanghai, Ningbo, or Yiwu, etc.

Q:Is the drill OEM available?

Yes, we accept OEM customization for our main products. Our factory has a qualified design team that can design products according to your drawings or images, and we will produce a sample for your approval before placing an order.

Q:What materials can this drill bit be used on?

It is widely used for drilling various materials such as stainless steel, tool steel, copper alloys, aluminum alloys, cast iron, and PVC.