Double Ended Wing Screw
Products Description
The Double Ended Wing Screw is a fastener with a double-ended threaded structure. Both ends feature standard external threads, and a wing-shaped operating head is integrated in the middle or at one end, catering to both quick manual tightening and tool-assisted locking needs.
Key Features Overview:
Double-ended thread design, suitable for multi-component series or double-sided fixing
Wing-shaped head structure supports quick manual operation
Reusable disassembly and assembly, suitable for industrial systems requiring frequent maintenance
Stable structure, clear force path, and resistance to loosening over long-term use
This design makes it significantly superior to ordinary screws or single-ended bolts in applications requiring frequent adjustment or disassembly.
Material Advantages: Scenario-Based Material Selection and Precise Performance Matching
Heavy-duty connection materials
40Cr alloy steel and 35CrMo special steel are selected. After heat treatment, the tensile strength can reach grade 8.8-12.9, with strong shear resistance, suitable for heavy-duty scenarios such as machinery manufacturing and building structures. They can withstand long-term dynamic loads and high-pressure stress, ensuring connection reliability.
Corrosion-resistant materials
304 stainless steel and 316L stainless steel are selected, possessing excellent acid and alkali resistance, moisture resistance, and oxidation resistance. Suitable for humid or corrosive environments such as pipeline installation and outdoor equipment, preventing connection failure due to rust and extending service life.
Precision connection materials
201 stainless steel and high-quality low-carbon steel are selected, with excellent processing performance and high thread forming precision. Suitable for precision assembly scenarios such as electronic equipment and small instruments, balancing strength and lightweight requirements, avoiding damage to precision components.
Materials for Special Applications
High-temperature alloys are provided for high-temperature applications, with a temperature resistance of over 500℃; engineering plastics are provided for insulation applications to avoid conductive interference; all materials comply with international environmental standards, with no excessive heavy metals, and are suitable for green production requirements.
Manufacturing Advantages and Technical Features: Precision Craftsmanship, Giving Life to Design
Integrated Molding and Machining
We utilize advanced CNC turning centers or dedicated automatic lathes, coupled with precision thread rolling machines, to ensure that threads, shafts, and wing sections are machined with high precision in a single setup. This guarantees extremely high coaxiality and perpendicularity among the three components, avoiding assembly difficulties and stress concentration caused by eccentricity.
Precision Heat Treatment
For high-strength applications, we use controlled atmosphere continuous furnaces for heat treatment. By precisely controlling the heating temperature, holding time, and cooling rate, we ensure that each screw achieves uniform and consistent mechanical properties, meeting the designed strength and toughness specifications.
Surface Treatment Processes
We offer a variety of surface treatments to meet different needs. Environmentally friendly Dacromet and mechanical galvanizing provide excellent corrosion resistance for carbon steel products; passivation further enhances the corrosion resistance of stainless steel; and for brass products, we offer nickel plating, chrome plating, etc., to enhance their wear resistance or achieve different decorative effects.
Detailed Demonstration: A Microscopic Perspective to Verify Professional Quality
Thread Coaxiality Test at Both Ends
The Double End Fastener is placed on a center or V-block and rotated. An indicator light is used to measure the runout of the major diameter of the threads at both ends. A very small value demonstrates excellent coaxiality.
01
Surface Integrity of the Central Tightening Area
The hexagonal or knurled surfaces are free of over-forging, cracks, or burrs. The edges are clear, ensuring good wrench engagement and sufficient strength.
02
Thread Fullness and Smoothness
The thread crest is full, without flat tops or depressions; the thread sides are bright, without wrinkles or micro-cracks caused by rolling for Equal Double Threaded Stud.
03
Coating/Plate Coverage Uniformity
Even at the thread root and the transition concave angle between the middle and ends, the protective coating should continuously cover the thread without any exposed substrate for the Both-end Stud.
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