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What is a counter-sunk Philips self-tapping screw, and how does it differ from other types of screws?
A Counter-Sunk Philips Self-Tapping Screw is a specific fastener designed to join materials together efficiently and securely. It features a conical recess on its head, known as a counter-sink, which allows the screw head to sit flush with the material's surface when fully installed. This design creates a smooth and aesthetically pleasing finish while minimizing potential snagging or interference with other components.
The Philips drive on the screw head is characterized by a cross-shaped indentation, allowing for easy engagement with a corresponding screwdriver or power tool. The self-tapping feature of these screws means that they can create threaded holes during installation without needing pre-drilling, making them a time-saving option. Unlike traditional screws requiring a pilot hole, Counter-sunk Philips Self-tapping Screws offer convenience and efficiency in various applications, providing a strong and reliable fastening solution.
Table Of Content
About Counter Sunk Philips Self Tapping Screws
Counter Sunk Philips Self Tapping Screws Specification
Stock Availability of Counter Sunk Philips Self Tapping Screws
Counter Sunk Philips Self Tapping Screws Ready Stock
Counter Sunk Philips Self Tapping Screws Applications and Uses
Supply & Export Destinations of Counter Sunk Philips Self Tapping Screws
How does the self-tapping feature of these screws work, and what advantages does it offer during installation?
The self-tapping feature of counter-sunk Philips screws allows them to create their threads as they are driven into the material. The screw's unique design includes a sharp, pointed tip with specially designed threading, enabling it to cut into the substrate as it rotates. As the screw advances, the threads remove material, forming precise and secure winding paths within the material. This Self-Tapping capability eliminates the need for a separate pilot hole, reducing installation time and effort.
It also provides a more straightforward and efficient fastening process, especially in hard or dense materials where creating a pilot hole might be challenging or time-consuming. Self-tapping screws offer better resistance to loosening over time, as the threads form a tight grip on the material, enhancing the overall stability and durability of the connection. These advantages make counter-sunk Philips self-tapping screws a popular choice in various applications, such as woodworking, metalworking, and construction, where efficient and reliable fastening is essential.
| Metric Size Range | No.2 to No.14 |
|---|---|
| Dimensional Standards | DIN 7982 C; ISO 7050; CSN 21237; UNI 6955, ANSI B18.6.3 |
| Length | 4.5-50MM |
| Screws Types | Counter Sunk Philips Self Tapping Screw |
| Tolerance | +/-0.01mm to +/-0.05mm |
| Threads | METRIC, BSW, BSF, UNC, UNF or as required |
| UTS – Unified Thread Standard | UNC, UNF, UNEF, UNS, NPT, NPTF |
| Application | Wind Tower, Nuclear Power, Railway, Automotive Industry, Construction, Electronic Industry |
| Packaging | Cartoon Box / Wooden Pallet / Wooden Box / Thread Protector |
| Forming | Hot Forged & Cold Forged |
| Certification | Dual Certified As per ASTM & ASME Codes |
| THREAD SIZE | ST2,2 | ST2,9 | ST3,5 | (ST3,9) | ST4,2 | ST4,8 | ST5,5 | ST6,3 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| P | 0,8 | 1,1 | 1,3 | 1,3 | 1,4 | 1,6 | 1,8 | 1,8 | ||
| a | max. | 0,8 | 1,1 | 1,3 | 1,3 | 1,4 | 1,6 | 1,8 | 1,8 | |
| dk | nominal=max. | 4,3 | 5,5 | 6,8 | 7,5 | 8,1 | 9,5 | 10,8 | 12,4 | |
| min. | 4 | 5,2 | 6,44 | 7,14 | 7,74 | 9,14 | 10,37 | 11,97 | ||
| k | approx. | 1,3 | 1,7 | 2,1 | 2,3 | 2,5 | 3 | 3,4 | 3,8 | |
| r | max. | 0,8 | 1,1 | 1,4 | 1,5 | 1,6 | 1,9 | 2,1 | 2,4 | |
| Cross recess | No. | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | |
| Type H | m | approx. | 2,5 | 3 | 4,2 | 4,6 | 4,7 | 5,1 | 6,8 | 7,1 |
| Penetration deptd | min. | 1,02 | 1,4 | 1,62 | 2,03 | 2,11 | 2,59 | 2,95 | 3,33 | |
| max. | 1,32 | 1,7 | 2,12 | 2,53 | 2,62 | 3,1 | 3,53 | 3,91 | ||
| Type Z | m | approx. | 2,4 | 2,9 | 3,9 | 4,1 | 4,3 | 4,7 | 6,2 | 6,7 |
| Penetration deptd | min. | 1,1 | 1,48 | 1,6 | 1,85 | 2,05 | 2,64 | 2,72 | 3,38 | |
| max. | 1,35 | 1,73 | 2,06 | 2,31 | 2,51 | 3,1 | 3,18 | 3,84 | ||
| y | max. | Type C | 2 | 2,6 | 3,2 | 3,5 | 3,7 | 4,3 | 5 | 6 |
| Type F | 1,6 | 2,1 | 2,5 | 2,7 | 2,8 | 3,2 | 3,6 | 3,6 | ||
Counter Sunk Philips Self Tapping Screws in Distillery Plants
Counter Sunk Philips Self Tapping Screws in Sugar Industries
Counter Sunk Philips Self Tapping Screws in Process Industries
Counter Sunk Philips Self Tapping Screws in Power Plants
Counter Sunk Philips Self Tapping Screws in Refineries
Counter Sunk Philips Self Tapping Screws in Petrochemical Plants
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