Caliper Overseas is a reliable CSK Philips Head Screw Supplier and Manufacturer in India that provides high-strength fasteners crafted with precision. A CSK Philips head screw has a flat, countersunk head that sits flush with the surface once installed. It uses a Phillips drive, making it easy to align and install using a standard Phillips screwdriver. These screws are generally used in wood, metal and plastic applications where one requires a clean, smooth finish. It offers functionality and clean appearance with better grip and load distribution.
Our screws meet major international standards including DIN 965, ISO 7046, DIN 7982, ISO 7049 and ANSI/ASME B18.6.4. Known for their strength, corrosion resistance, and reliable performance, each product is tested and certified for quality. Choose from a variety of sizes and finishes to suit your specific application. For dependable solutions, get in touch today to request a quote or place your order!

| 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 | CSK Phillips Head 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 | ||
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