Global Fastening Customization Solutions Supplier
Products
Stainless Steel Countersunk Head Self Drilling Screws
Product Description
| Product Name | Stainless Steel Countersunk Head Self Drilling Screws |
| Material | Made from stainless steel, these screws have good chemical resistance and may be mildly magnetic |
| Head Type | Countersunk Head |
| Length | Is measured from the top of head |
| Application | They're not for use with aluminum sheet metal. All are beveled under the head for use in countersunk holes. Screws penetrate 0.025" and thinner sheet metal. |
| Standard | Screws that meet ASME B18.6.3 or DIN 7504-O with standards for dimensions. |
Advantages
1. Stainless steel screws have good chemical resistance and may be mildly magnetic.
2. Length is measured from under the head.
3. Sheet metal screws/tapping screws are threaded fasteners with the unique ability to "tap" their own mating internal thread when driven into preformed holes in metallic and non-metallic materials.
4. Sheet metal screws/tapping screws are high strength, one-piece, one-side-installation fasteners.
5. Because they form or cut their own mating thread, there is unusually good thread fit, which enhances resistance to loosening in service. Sheet metal screws/tapping screws can be disassembled and are generally reusable.
| Thread Size | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | ||
| P | Pitch | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| a | max | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |
| dk | max | 5.5 | 7.3 | 8.4 | 9.3 | 10.3 | 11.3 | |
| min | 5.2 | 6.9 | 8 | 8.9 | 9.9 | 10.9 | ||
| k | max | 1.7 | 2.35 | 2.6 | 2.8 | 3 | 3.15 | |
| r | max | 1.2 | 1.4 | 1.6 | 2 | 2.2 | 2.4 | |
| Socket No. | 1 | 2 | 2 | 2 | 3 | 3 | ||
| M1 | 3.2 | 4.4 | 4.6 | 5.2 | 6.6 | 6.8 | ||
| M2 | 3.2 | 4.3 | 4.6 | 5.1 | 6.5 | 6.8 | ||
| dp | 2.3 | 2.8 | 3.6 | 4.1 | 4.8 | 5.8 | ||
| Drilling range(thickness) | 0.7~1.9 | 0.7~2.25 | 1.75~3 | 1.75~4.4 | 1.75~5.25 | 2~6 | ||
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