black stainless steel phillips pan head self tapping screw
Drive Directly, No Pre-Drilling Needed. Save Time & Labor.
Superior Grip in Metal, Wood, and Plastic Assemblies.
Rust-Resistant Coating for Lasting Strength in Harsh Environments.
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Sinsun Pan Head Self-Tapping Screws | High-Grip Fasteners for Metal & Wood
Sinsun's professional-grade pan head self-tapping screws offer superior holding power, easy installation, and corrosion resistance. Request a quote for durable fastening solutions today.
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Key Selling Points & Benefits
| Parameter | Specification / Description |
| Product Type | Pan Head Self-Tapping Screw / Sheet Metal Screw |
| Brand | Sinsun |
| Drive Type | Phillips (PH), Slotted, Pozidriv (PZ), or Combination available |
| Head Type | Pan Head (Round with flat bearing surface) |
| Point Type | Sharp Tapered Point (Type A/B) or Drill Point (Type U) for thicker metals |
| Thread Type | Coarse Thread, Partial or Full Threading |
| Material | Low/Medium Carbon Steel (Case Hardened), Stainless Steel (A2-304, A4-316) |
| Finish/Coating | Standard Zinc Plated (Blue/White/Yellow passivate), Galvanized, Nickel Plated, or Plain |
| Standards | Complies with DIN 7981, DIN 7982, ISO 7049, ANSI/ASME B18.6.4, or equivalent |
| Core Features | Self-tapping, Self-drilling (depending on point), High Tensile Strength, Corrosion Resistant |
Screw Size (Gauge x Length) |
Head Diameter (mm) approx. |
Head Height (mm) approx. |
Thread Diameter (mm) approx. |
Drive Size |
Recommended Pilot Hole (mm) |
#4 x 1/2" (13mm) |
6 |
2.4 |
2.9 |
PH #1 / #2 |
1.8 - 2.0 |
#6 x 1/2" (13mm) |
7.5 |
2.8 |
3.5 |
PH #2 |
2.2 - 2.4 |
#8 x 3/4" (20mm) |
8.5 |
3.2 |
4.2 |
PH #2 |
2.8 - 3.0 |
#10 x 1" (25mm) |
9.5 |
3.6 |
4.8 |
PH #2 |
3.2 - 3.5 |
#12 x 1-1/4" (32mm) |
11 |
4.2 |
5.5 |
PH #3 |
3.8 - 4.2 |
1/4" x 1" (25mm) |
13 |
5 |
6.3 |
PH #3 |
4.5 - 5.0 |
Application
Electrical & HVAC Assembly
Used to hold electrical enclosures, conduit clamps, and HVAC duct joints in place where they need to be able to handle a lot of vibration. You don't need to drill pilot holes for zinc-plated screws to go into 16-22 gauge steel. This cuts assembly time by 25-40%. Common in the installation of mechanical systems and building panels.
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Making appliances and sheet metal parts
Necessary for connecting sheet metal panels in appliances, cabinets, and industrial housings. The pan head design spreads the clamping force over a material thickness of 2 to 3 mm, which keeps it from bending. These fasteners are used by automated assembly lines to put in 800 to 1,500 screws per hour.
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Parts for the inside and trim of cars
Keeps plastic trim panels, bracket mounts, and interior accessories in place in cars where looks matter. Black oxide screws can withstand salt spray for more than 96 hours while still looking the same. Usually, each car uses between 200 and 400 of these fasteners.
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Uses in the outdoors and at sea
316 stainless steel screws can last for more than 15 years in coastal and chemical environments. Used in boat fittings, deck hardware, and outdoor enclosure assembly where it is important that the material does not rust. Torx drives stop stripping when you put them in hardwoods or composite materials.
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Putting together the furniture and display system
In commercial furniture and retail displays, it connects metal frames to wood or particle board. Coarse-threaded versions are 30% stronger at pulling out MDF and plywood than regular wood screws. You only need 60–70% of the torque needed for pre-drilled connections to install it.
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Electronics and telecommunications
In servers and communication equipment, it mounts PCB boards, heat sinks, and rack parts. Brass or aluminum screws keep sensitive parts from corroding by galvanic action while also meeting EMI/RFI shielding needs. Thread-forming design makes it less likely that conductive debris will form.
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Q: Do I always have to drill a pilot hole before using these screws?
A: No, that's the main benefit. Self-tapping screws can cut their own thread into thin-gauge sheet metal (up to 14-gauge), plastics, and soft woods, so you usually don't need to drill a pilot hole first. This could cut installation time by as much as 30%. A pilot hole is recommended for thicker metals or harder materials to prevent screw breakage and ensure proper alignment.
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Q: What's the difference between finishes in yellow zinc and stainless steel?
A: Yellow zinc plating is a cost-effective rust protection for indoor or sheltered outdoor use, such as electrical cabinets. Stainless steel, especially Grade 316, is superior for harsh environments like coastal areas or chemical processing, often lasting over 15 years without signs of corrosion.
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Q: What are the benefits of using a Torx drive instead of a Phillips drive?
A: A Torx (Star) drive transfers torque much better and resists "cam-out" (slipping), reducing wear on the bit and the fastener head. This is critical for automated assembly or high-torque applications. Phillips drives are common and economical for general manual assembly but are more prone to stripping under high torque.
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Q: Are Sinsun pan head self-tapping screws safe to use on outdoor furniture or boats?
A: Yes, provided you choose the right material. We highly recommend our A4 (316) Stainless Steel screws for these applications. Unlike regular zinc-plated screws, these are highly resistant to saltwater, humidity, and UV exposure, preventing structural failure and unsightly rust stains.
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Q: Do your screws meet international standards? Do you give out certificates?
A: Yes. Sinsun screws meet international standards like ANSI, ISO, and DIN. We provide standard RoHS compliance certificates and, upon request, material test reports (MTRs) for specific batches. Please contact our sales team for certification needs.
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Q: Do you have different sizes, lengths, or packaging?
A: Of course. We stock a wide range of standard sizes and specialize in custom orders for project-specific needs, including non-standard lengths, unique drive types, special coatings (like black oxide), and private labeling.
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Q: How do I know what length screw I need for my project?
A: A good rule of thumb is that the screw should be long enough to penetrate the substrate by at least two or three full threads. For example, attaching a 2mm metal sheet to a 10mm plastic block requires a threaded length of at least 12mm to 13mm.
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Q: Is it possible to ask for samples before making a large order?
A: Yes, we encourage it. Free samples of our standard products are available so you can evaluate quality, fit, and finish—ensuring the clamping force and corrosion resistance meet your specific requirements before a bulk purchase.
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