Automotive precision parts screw parts, as the core components for achieving precise displacement, power transmission and tight connection in automotive mechanical systems, are widely used in key systems such as steering, braking, seat adjustment and power transmission. The products are made of alloy steel, stainless steel or high-strength copper alloy, and are processed by precision processes such as CNC turning, thread rolling and heat treatment. Its structure is based on high-precision threads, and is matched with various forms such as optical shafts, flanges, stepped shafts, etc. to meet different functional requirements.
Core advantages | Technical highlights | Application value |
High-precision transmission | Using cold rolling thread process, pitch error ≤±0.01mm, surface roughness Ra≤0.8μm, with precision ground nut pair | Ensures precise control of steering and braking systems, improves driving safety and comfort, such as the steering screw can achieve 0.1° level angle adjustment |
High strength and wear resistance | Selecting 40Cr, 35CrMo and other alloy steel materials, after quenching and tempering, quenching treatment, tensile strength ≥800MPa; nitriding treatment on the surface, hardness reaches HV700 or above | Withstands high loads and frequent movements, suitable for engine mounts, suspension systems and other components, reduces wear and extends service life |
Corrosion resistance | Stainless steel material (such as 304, 316L) or surface galvanized, nickel-plated, salt spray test over 1000 hours | Adapts to harsh environments such as rain, snow, acid and alkali, and ensures long-term stable operation of chassis, braking systems and other components |
Flexible customization | Supporting thread specifications (M3-M30), length (20-500mm), head shape (cylindrical head, countersunk head) and other personalized customization | Meets the differentiated needs of different models and systems, and improves the adaptability of vehicle assembly |
Material and process
.Material selection
Alloy steel: Alloy steels such as 40Cr and 35CrMo have high strength and good toughness, and are suitable for high-load components such as steering screws and transmission screws.
Stainless steel: 304 and 316L stainless steels have excellent corrosion resistance and are often used in chassis and brake system screws exposed to the external environment.
Copper alloy: Copper alloys such as tin bronze and aluminum bronze have good self-lubrication and are suitable for friction-sensitive adjustment screws, such as seat adjustment mechanisms.
.Processing technology: CNC multi-axis linkage processing equipment is used, combined with cold rolling thread, grinding, polishing and other processes to ensure thread accuracy and surface quality; some products are further improved through special treatments such as laser quenching and chemical nickel plating.
Item | Metrics | Description |
Thread specification | M3-M30 | Covering a variety of connection and transmission requirements |
Length range | 20-500mm | Can be customized according to actual applications |
Pitch accuracy | ±0.01mm | Ensure transmission accuracy |
Surface hardness | HV550-HV800 | Enhance wear resistance and fatigue resistance |
Tensile strength | ≥600MPa | Meet different load conditions |
Application scenarios
. Steering system: As the core component of the steering gear, the steering screw converts the steering wheel rotation into the linear motion of the steering rod, achieving precise steering of the vehicle and improving driving controllability.
. Braking system: The brake adjustment screw is used for brake calipers, brake master cylinders and other components to adjust the brake clearance, ensure sensitive and reliable braking response, and ensure driving safety.
. Seat adjustment mechanism: Through the multi-directional adjustment screw, the front and back, height and backrest angle of the seat can be finely adjusted to meet the comfort needs of different drivers and passengers.
. Power transmission system: Between the engine and the gearbox, drive shaft and other components, screw parts are used for fastening and power transmission to ensure efficient power transmission and reduce energy loss.
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China management center add.204, Building A, Phase 3, Jiewei Industrial Park, Shangmugu Community, Pinghu Street, Longgang District, Shenzhen, China
Headquarters tel.+86 134 3077 5139
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