Black Stainless Screws
Products Description
In B2B scenarios such as outdoor facility installation, medical equipment assembly, electronic appliance fixing, building decoration connection, and industrial equipment assembly, black stainless screws serve as a dual-core component of "corrosion-resistant fastening + aesthetic compatibility," undertaking the crucial functions of structural fixation, corrosion protection, and aesthetic coordination. Currently, the industry generally faces six major pain points: traditional black screws are mostly carbon steel with spray painting/electroplating processes, resulting in coatings that are prone to peeling and rusting, and short outdoor service life; ordinary stainless steel screws have a single color (silver-gray), failing to meet the aesthetic requirements of black-themed equipment/scenes; low-quality black screws lack hardness, easily stripping and breaking during installation; poor coating adhesion, fading and exposing the underlying material after vibration and friction; weak corrosion resistance, easily oxidizing and failing in humid and salt spray environments; and limited specification compatibility, making it difficult to match the precision installation needs of various industries.
Product Features
High Strength and Durability
Made of high-quality stainless steel, the stainless steel sheet metal screws undergo rigorous heat treatment to enhance strength and tensile properties, allowing for long-term use under high stress without easily breaking or deforming.
01
Excellent Corrosion Resistance
Black anodizing or PVD surface coating gives the steel screws excellent resistance to oxidation, rust, and chemical corrosion, making them suitable for humid or corrosive environments such as marine equipment, outdoor facilities, and chemical equipment.
02
Precise Thread Design
High-precision machining or thread rolling ensures reliable fastening and smooth tightening, reducing damage to the material surface and improving assembly efficiency.
03
High Temperature Resistance
Through specific surface strengthening treatments and material selection, the stainless steel set screws can be used for extended periods in high-temperature environments, suitable for high-temperature conditions in motors, engines, and industrial machinery.
04
Aesthetically Pleasing Black Surface
The uniform black surface not only enhances the overall visual appeal of the stainless tapcon but also reduces light reflection and wear marks, making it suitable for product designs with high aesthetic requirements.
05
Material Advantages: Ensuring Reliability of Fastening and Corrosion Protection from the Source
1. High-Specification Stainless Steel Base Material
304 Stainless Steel Base Material: Contains 18% chromium, 8% nickel, and 0.75% molybdenum. Excellent corrosion resistance, suitable for indoor and dry outdoor environments; tensile strength ≥520MPa, yield strength ≥205MPa, hardness HRC25~28, meeting general fastening requirements.
316 Stainless Steel Base Material: Based on 304, with added molybdenum (≥2%), improving salt spray and chemical corrosion resistance by 50%, suitable for coastal, humid, and chemically resistant environments; tensile strength ≥540MPa, yield strength ≥210MPa, hardness HRC28~32, suitable for high-requirement applications.
2. High-Performance Black Coating Materials
PVD Coating Materials: Utilizing ceramic coating materials such as titanium black and zirconium black, with a hardness of HV1500~2000, abrasion resistance 10 times that of ordinary spray paint, a temperature range of -50℃ to +300℃, no volatiles, and environmentally friendly and non-toxic.
Chemical Blackening Materials: Employing an alkaline oxidation blackening process, combined with a passivating and sealing agent, forming a Fe3O4 black oxide film, which bonds tightly to the substrate, provides excellent corrosion resistance, and is moderately cost-effective, suitable for mass production and general applications.
Application Advantages
Consumer Electronics
Used for mounting the casings of smartphones, laptops, drones, and VR glasses. Its wear-resistant and sweat-resistant properties perfectly ensure a smooth daily user experience.
High-End Furniture and Kitchenware
Assembled for custom cabinets, designer chairs, and high-end audio systems. Its unified black aesthetic blends seamlessly into modern home designs, enhancing the overall style.
Automotive and Rail Transportation
Stainless steel cladding screws are used for mounting interior panels, center consoles, and dashboards in luxury cars. Its low VOC emissions and high/low temperature resistance meet stringent automotive-grade standards.
Precision Instruments and Medical Devices
Assembled for laboratory equipment, high-end camera lenses, and surgical instruments. Stainless steel roofing screws' corrosion resistance and easy-to-clean properties meet the demanding requirements of professional fields.
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