Stainless Steel Micro Fastener Components

1. Customer Communication: First, the service provider will have an in-depth discussion with the client to understand the specific project requirements, including the fastener's application scenario (e.g., automotive electronic module fixing, miniature sensor connection), load-bearing performance demands, batch size, and delivery timeline.

2. Design File Receipt: The client provides detailed CAD models (usually in STEP, IGES, or x_t formats) and technical drawings, specifying key parameters like micro-thread pitch, dimensional tolerance (up to ±0.005mm), and surface finish standards.

3. Design for Manufacturability (DFM) Analysis: The engineering team reviews the client's design to assess its suitability for micro CNC machining. They check the micro fastener's geometry (e.g., countersunk head structure, tiny shank diameter), tolerance rationality, material compatibility, and surface finish feasibility, providing optimization suggestions (e.g., adjusting fillet radius of micro-thread roots) to ensure the part can be manufactured with quality and cost-effectiveness in mind.

1. Material Selection: Based on the fastener's function and performance needs, engineers select the appropriate stainless steel grade, such as 303 (free-machining for micro-threads), 316 (corrosion-resistant for humid environments), or 416 (high-hardness for load-bearing scenarios).

2. CAM Programming: Using professional Computer-Aided Manufacturing (CAM) software, engineers create tool paths for micro CNC machines. This is a critical step, as it involves figuring out low-feed, multi-pass cutting strategies for tiny threads (e.g., M1.5*0.35 pitch) and optimizing multi-face machining paths to minimize setups, improve efficiency, and prevent collisions between micro-tools and the part.

3. Machining Simulation: Before the actual machining begins, a virtual simulation is performed to model the entire process, checking for potential risks like thread deformation or tool breakage to ensure the program is safe and accurate.

1. Machine Setup: The appropriate stainless steel micro blank (e.g., φ0.8-5mm bar) is secured on the micro CNC machine's worktable, and specialized micro-tools (tiny thread taps, micro-drills) are mounted and calibrated.

2. Part Machining: The micro CNC machine starts and performs the automated machining according to the CAM program. Because micro CNC equipment can handle multi-feature processing in a single setup, it significantly shortens production time and improves the fastener's dimensional consistency (e.g., uniform thread pitch across batches).

3. Quality Inspection: After machining is complete, the parts go through a series of strict quality control checks. This often involves using high-precision measuring tools (e.g., micro-thread gauges, digital micrometers) and metallographic microscopes to perform a full inspection of critical dimensions, thread fit, and surface smoothness to ensure every fastener meets the design specifications.

1. Surface Finishing: Based on client requirements, parts can undergo various post-processing treatments such as passivation (to enhance corrosion resistance of 303 stainless steel), heat treatment (to improve hardness of 416 stainless steel), or precision deburring (to ensure smooth assembly of micro fasteners).

2. Cleaning & Packaging: After a thorough ultrasonic cleaning (to remove cutting fluid residues), the parts are professionally packaged in anti-static trays (for small batches) or vacuum-sealed bags (for mass production) to prevent damage or contamination during transit.

3. Delivery: Finally, the qualified finished products are delivered to the client according to the agreed-upon shipping method (express for samples, air freight for urgent batches), with attached detailed inspection reports.

Characteristics: This is a "free-machining" stainless steel, which produces short, manageable chips during micro CNC work—ideal for high-precision micro-threads. It has moderate corrosion resistance.

Automotive & Electronic Applications: Widely used for automotive electronic module micro screws, miniature sensor fixing fasteners, and electronic equipment connector pins.

Characteristics: 316 offers excellent corrosion resistance (suitable for humid or acidic environments) and good mechanical properties, but has slightly poorer machinability than 303.

Automotive & Electronic Applications: Used for automotive under-chassis micro fasteners, marine electronic equipment fixing components, and medical device micro connectors.

Characteristics: This is a martensitic stainless steel that can be heat-treated to achieve high hardness and wear resistance. Its corrosion resistance is lower than the 300 series.

Automotive & Electronic Applications: Suitable for high-strength automotive engine micro fasteners, industrial miniature bearing fixing pins, and precision instrument clamping components.

1. Extensive Experience and Specialization

   (1) Micro Machining Focus: They explicitly specialize in R&D and production of stainless steel micro fasteners, with mature processes for features as small as 0.8mm diameter and 0.2mm thread pitch—critical for automotive and electronic precision needs.
   (2) Industry Adaptability: They have in-depth understanding of automotive electronic module, miniature sensor, and precision instrument scenarios, ensuring fasteners match field application requirements.

2. Comprehensive Manufacturing Capabilities

   (1) In-House Micro Tooling: Having custom micro-tool production capacity (e.g., tiny thread taps) reduces outsourcing delays and ensures tool compatibility with fastener specifications.
   (2) Diverse Processes: We offer micro CNC machining (turning, milling), heat treatment, passivation, and precision deburring—supporting one-stop production of complex micro fasteners.

3. Focus on Precision and Quality

   (1) ISO 9001 Standards: Waltay follow ISO 9001 standards for quality control, with dedicated micro-dimension inspection equipment (high-precision micrometers, metallographic microscopes) to ensure 100% qualified rate of micro fasteners.

4. Customer-Centric Services

   (1) Rapid Prototyping: Waltay offers rapid prototyping services for stainless steel micro fasteners with an overall lead time of 3-5 days, supporting quick design iterations for automotive/electronic R&D.
   (2) Design Assistance: We provide DFM optimization for micro fastener designs, helping clients adjust tiny features (e.g., thread root fillets) to improve manufacturability and reduce costs.
   (3) Free Samples: We provide free samples of existing micro fastener models for client testing, reducing R&D investment.
   (4) Quick Quotation: Quotation in 24 hours helps clients get pricing information rapidly.

5. Strategic Location

   Shenzhen, China: Being located in Shenzhen, Guangdong, China, places Waltay in a major manufacturing hub, enabling efficient supply chain support and competitive pricing for stainless steel micro fastener components.

Waltay is specializing in custom stainless steel micro fastener components for over 15 years. We are good at making high-precision micro fasteners (minimum diameter 0.8mm) for automotive and electronic applications. We also provide one-stop service such as design optimization, prototyping, and surface treatment to better meet customers’ needs. Besides stainless steel, we also offer micro fasteners made of brass and aluminum alloy, which can be widely used in automotive sensors, electronic connectors, and precision instruments.