Stainless Steel Butterfly Bolts

• 1.1 Austenitic stainless steel butterfly bolts: such as 304, 316 and other materials, with good corrosion resistance, toughness and processing performance, non-magnetic, suitable for food processing, medical equipment, chemical industry and other environments with high corrosion resistance requirements.
• 1.2 Ferritic stainless steel butterfly bolts: high chromium content, with certain corrosion resistance and strength, magnetic, relatively low cost, suitable for general industrial occasions that do not require extremely high corrosion resistance and require certain strength.
• 1.3 Martensitic stainless steel butterfly bolts: have high strength, hardness and wear resistance, but the corrosion resistance is slightly worse than austenitic stainless steel. After heat treatment, good mechanical properties can be obtained. It is suitable for machinery manufacturing, automobile industry and other fields that require high strength and high hardness.

2.1 Standard butterfly head bolts: The head shape is a typical butterfly shape, with symmetrical wings, which is convenient for direct tightening or loosening by hand, easy to operate, and is the most common type.

2.2 Toothed butterfly head bolts: The two wings of the butterfly head have tooth patterns or protrusions to increase friction, making tightening and loosening easier and preventing hands from slipping. They are suitable for occasions that require a larger tightening force.

3.1 Coarse thread butterfly bolts: The pitch is larger, the thread depth is deeper, and the strength is higher. They are suitable for general fastening connections and are widely used in some occasions that require high connection strength but not particularly strict precision.

3.2 Fine thread butterfly bolts: The pitch is smaller, the thread depth is shallower, the self-locking performance is good, and it can withstand a smaller axial force. It is suitable for occasions that require high fastening precision, fine-tuning or loosening prevention, such as instruments and electronic equipment.

4.1 Natural stainless steel butterfly bolts: Maintain the color and surface state of stainless steel itself, with a natural metallic luster, suitable for occasions that do not require high appearance but require low cost.

4.2 Passivation treatment butterfly bolt: a passivation film is formed on the surface through passivation treatment to improve corrosion resistance, which is often used in ordinary environments with certain requirements for corrosion resistance.

4.3 Plating treatment butterfly bolt: such as nickel plating, chrome plating, zinc plating, etc., can further improve corrosion resistance and wear resistance, and make the surface more beautiful, which is suitable for occasions with high requirements for appearance and corrosion resistance.

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