M8 stainless steel protruding end locking stop screw, precision headless screw

Automotive (including New Energy) Industry

Application Scenarios

Core Production Characteristics

• High-Strength Performance Control

  Core fasteners require excellent tensile strength, torsional strength and fatigue resistance to withstand high-frequency vibration and alternating loads during vehicle operation, avoiding failures such as loosening and fracture. High-strength alloy steels (e.g., Grade 10.9, Grade 12.9 bolt steel) and optimized heat treatment (quenching + tempering) are applied to ensure mechanical properties, while fatigue testing verifies service life.
• Consistency Assurance for Mass Production

  The automotive industry demands a large quantity of fasteners (hundreds per vehicle), requiring stable, high-precision mass production. Automated production lines including automatic feeding, CNC machining, automatic inspection and automatic packaging are adopted to reduce manual intervention, control dimensional deviations, ensure consistency in dimensions and performance across batches, improve vehicle assembly efficiency and lower assembly failure rates.
• Customized and Lightweight Production

  According to installation space and functional requirements of automotive components, customized products are provided with non-standard threads, flange faces (no extra washers needed, improving assembly efficiency) and anti-loosening structures (e.g., nylon locking, serrated locking).

• Special Requirements for New Energy Vehicles
  Battery pack fasteners are critical safety components for new energy vehicles. They must bear battery pack weight, driving vibration and temperature changes from battery heating, with torque requirements exceeding 200 N·m, plus good insulation and corrosion resistance.

General Core Characteristics of CNC Machined Screws

• Ultra-high precision: Standard tolerance ±0.01 mm, precision version up to ±0.001 mm, with precise, clearance-free thread fitting.
• Strong consistency: Program-controlled, highly uniform dimensions, geometric form and surface quality in batches.
• Flexible customization: No mold required, fast switching for non-standard pitches, special heads, multi-step shapes and special slot types.
• Wide material compatibility: Capable of machining stainless steel, titanium alloy, aluminum alloy, copper alloy, high-temperature alloy, etc.
• Flexible efficiency & batch size: Suitable for small-batch prototyping and medium-batch customization, with fast switching between single-piece and multi-variety production.

CNC Machined Screws vs. Traditional Screws (Thread Rolling / Cold Heading)