black self tapping screws
for metal
Discreet, Durable, Instantly Professional.
No Glare, No Distraction, Just Secure Hold.
From Trim to Tech – One Screw, Perfect Finish.
01
Sinsun Black Self-Tapping Screws： Leading Factory & Supplier of Professional-Grade
Sinsun is a premier manufacturer and supplier of high-performance black self-tapping screws, engineered for both functional reliability and superior aesthetics. Our factory-direct production ensures strict control over coating consistency, thread precision, and material integrity
Get a Quick Qoute
Product Overview: self tapping black screws
Black self-tapping screws combine the functional benefits of thread-forming fasteners with a uniform, non-reflective black finish.
This finish is usually achieved through black oxide or black phosphate coatings, which offer more than just color. The coating provides corrosion resistance, minimizes light glare, and minimizes fastener visibility for a cleaner, more professional appearance.
Sinsun’s black screws are precision-engineered from hardened steel to ensure sharp, clean threads that tap reliably into sheet metal, aluminum, steel, and plastic, eliminating the need for pre-drilled holes in many applications.
-
Uniform & Adherent Coating
Our unique coating process gives a consistent, deep-black matte finish that is usually 3–8 µm thick. This layer is firmly attached to the base metal, which makes it easier to install and makes it less likely to chip or rub off when being handled or driven.
-
Performance
We have a wide range of head styles (pan head, flat countersunk, hex washer), all with a sleek black finish that looks great. This lets designers and engineers choose the best functional drive while keeping a consistent, low-profile look for everything from car interiors to consumer electronics and dark-finished furniture.
-
Corrosion Protection
Although not recommended for severe outdoor exposure, our black oxide and phosphate coatings provide effective resistance to humidity and oxidation.They serve as an excellent base for light oils or waxes, which can further enhance protection for components in enclosed environments.
-
Factory-Direct Quality & Consistency
We carefully check every batch for adhesion (to ASTM B571), dimensional accuracy, and drive performance.You will receive consistently good-looking, smoothly driving screws that perform reliably.
| Parameter | Specification | Details / Application Notes |
| Coating Type | Black Oxide or Black Phosphate | Provides a uniform, matte black finish with mild corrosion resistance and reduced light glare. Adds lubricity for smoother driving. |
| Base Material | Low-Carbon or Medium-Carbon Steel | Provides a balance of strength and ductility for reliable thread-forming and driving performance. |
| Core Hardness | 38-45 HRC (Rockwell C) | Hardened to ensure the screw point and threads can effectively cut into the base material without deforming. |
| Point Styles | Type A (Gimlet Point): For thin sheet metal & plastic. | Selection depends on material thickness and whether pre-drilling is used. Tek points are rated for specific metal gauges. |
| Type B (Blunt Point): For pre-drilled holes. | ||
| Tek Point (Self-Drilling): For metal-to-metal. | ||
| Thread Type | Standard machine screw thread (e.g., AB, B) | Designed for creating strong, clean mating threads in ductile metals and plastics. |
| Head Styles | Pan Head, Flat/Countersunk Head, Hex Washer Head | Pan head for general use; Flat head for flush finish; Hex washer head for high-torque applications. |
| Drive Types | Phillips (PH), Pozidriv (PZ), Slotted, Hex Socket | Phillips and Pozidriv are most common. Hex socket provides higher torque capability. |
| Size Range | Diameter: #2 to #14, M3 to M8. | Length is chosen to ensure minimum of 3 full threads engage beyond the point of penetration. |
| Length: 6mm (1/4") to 75mm (3") commonly available. | ||
| Corrosion Resistance | Moderate (Indoor / Protected Environments) | The coating offers protection against humidity and oxidation. Not recommended for prolonged outdoor or wet exposure without additional sealing. |
| Primary Applications | Automotive Interiors, Electronics Enclosures, Furniture Assembly, Decorative Metalwork, Appliances. | Ideal where a low-visibility, non-reflective, and aesthetically pleasing fastener is required. |
| Standards Reference | Complies with general industry dimensional standards (e.g., ASME B18.6.4, DIN 7500 for self-drilling variants). | Coating processes follow controlled commercial specifications. Material certifications available. |
Note: Please talk to our technical team to see if this coating is right for your needs and to get suggestions for other coatings that might work better in certain environments (like high humidity or chemical exposure).
Applications of Sinsun Black Self-Tapping ScrewsSinsun Black Self-Tapping Screws are designed for situations where a secure fastening is also aesthetically pleasing.
● The smooth, low-profile appearance of the uniform black oxide or phosphate finish minimizes visual distractions and reduces light glare.
It also provides protection against corrosion in indoor and protected areas. These screws tap their own threads into sheet metal, steel, aluminum, and plastics, eliminating the need to drill holes first.
This makes assembly faster.
Both form and function are crucial in the interiors of cars, electronic enclosures, appliances, and architectural metalwork.
Black Self Tapping Screws for Metal
●Sinsun black self-tapping screws are engineered to cut clean threads in steel, aluminum, and other metal sheets without pre-drilling.
●The black oxide or phosphate finish provides a baseline corrosion barrier against humidity and indoor exposure.
●Commonly used in automotive framing, electrical cabinets, and machinery guards, they offer a secure, vibration-resistant hold while maintaining a low-visibility, professional appearance that minimizes light reflection.
Black Self Tapping Screws for Plastic
●Specifically designed for plastic assemblies, these screws feature a wide-spaced, sharp thread that reduces radial stress to prevent cracking or boss splitting.
●The black finish ensures a discreet look in consumer products.
●They are ideal for fastening thermoplastic components in automotive interiors, electronics housings, and appliance panels, providing strong pull-out resistance and reliable clamping in brittle or soft plastic materials.
-
1
Q: What is a black self tapping bolt, and how is it different from a screw?
A: A black self-tapping bolt typically refers to a larger-diameter fastener (often 1/4" or M6 and above) with a hex head designed for higher torque applications. Unlike standard screws, these "bolts" combine the thread-forming action of a self-tapper with the structural clamping force of a bolt. They are used for attaching heavy brackets, machinery feet, or structural elements to metal frames where a standard screw may lack the necessary shear strength.
-
2
Q: Is there a difference between a 'self tapping black screw' and a 'black self tapping screw'?
A: No, there is no functional difference. Both terms refer to the same product: a self-tapping screw with a black oxide or phosphate finish. At Sinsun, all our self-tapping black screws are manufactured to the same specifications, providing a consistent black finish for corrosion resistance and a clean aesthetic in metal and plastic assemblies.
-
3
Q: What does 'self screw black' mean? I'm having trouble finding it.
A: The term "self screw black" is likely an abbreviated or inverted search phrase for "black self-tapping screw." If you need a fastener that drills and taps its own thread and has a black finish, you are looking for black self-tapping screws or black self-drilling screws (if pre-drilling is not desired). Our product catalogs use these precise terms for easy navigation.
-
4
Q: When should I choose black self drilling screws over standard black self-tapping screws?
A: Choose black self-drilling screws when fastening metal-to-metal, especially if the combined thickness is over 1mm or pre-drilling is impractical. They feature an integrated drill point (Tek point) that bores through the metal. Choose standard black self-tapping screws for thinner materials or pre-drilled holes. The black finish provides aesthetic appeal and mild corrosion protection for both types.
-
5
Q: What are the advantages of a black wafer head self drilling screw?
A: The wafer head is a low-profile, flat head with a large bearing surface. In a black finish, it provides a neat, nearly flush appearance while the large underside distributes clamping force, reducing the risk of pulling through thin sheet metal. These screws are ideal for securing metal roofing, cladding, or HVAC ducts where a smooth surface and a reliable seal are important.
-
6
Q: Why would I buy an assorted kit of black self tapping screws?
A: An assorted kit is perfect for maintenance shops or DIYers who need a variety of sizes and head styles for unpredictable repair or prototyping tasks. It provides flexibility and reduces downtime. Sinsun's assorted kits are logically packaged, clearly labeled, and feature our standard durable black finish for reliable performance across various materials.
Keep In Touch
TO KNOW MORE ABOUT Sinsun, PLEASE CONTACT US！
We are committed to providing you with the best quality service and look forward to communicating with you to solve problems together and bring you a better experience.
our experts will solve them in no time.