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| Customization: | Available |
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| Material: | Carbon Steel |
| Type: | Countersunk Head |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Customized Support
Material / Size / Grade / Surface / Head / Driver / Logo / Package etc.
| Product name | Countersunk Torx with lock slot Self Tapping Screw |
| Material | carbon steel |
| Specifications | M4.2 X 19 or #8 X 3/4" |
| Surface Treatment | Zinc Plated |
| Grade | HRC≥560HV0.3 |
| Executive Standard | Customized |
| Package | Carton bulk, Carton box, Pallet, etc. |
| Estimated delivery time | Negotiation required |
| logistics mode | Cusomized |
| LOGO customization | support |
| Outer packaging customization | support |

| d | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | |
| Pitch | 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 |
| L | 6.5-19 | 9.5-25 | 9.5-32 | 9.5-32 | 13-38 | 13-38 | |
Other Instructions:
The above is for reference only. If you have any problems, please contact us.


Shanghai Gentleman hardware Co., Ltd. always adhere to the principle of leading technology, quality first, customer first, and grow together with our partners around the world.
Besides DIN standard products we supply also ex stock according to ISO, UNC, UNF, BSW (whit worth), BSF, ASTM and ANSI standards. Above all, our well-known specialty is not only to produce standard fasteners, but also to design and produce the products you need according to your samples or drawings. And is known in the market as the specialist for special fasteners.
Our hexagon head bolts and socket cap screws are also standard available in the higher grades 10.9 and 12.9. The plating company guarantees excellent finished products: electrolytic (blue, yellow or black passivized) and hot dip galvanizing are the most common standard surface treatments. And the best surface treatment of Greencate (powder zincification / sherardizing) is also can be applied.
Besides our focus on the machine and equipment construction we deliver to a great variety of industries like shipbuilding, petrochemical industry, furniture and electronically manufacturing. We can produce quickly in relatively small series for our cooperation partner worldwide.
Our international trade company is located in Shanghai city which is very close to the Shanghai seaport and airport, can save a lot of transportation and time costs.
We will use our professional testing equipment to test each batch of products to ensure that our products meet the requirements.Q1: Wonder if you accept small orders?
A1: Do not worry. Feel free to contact us .in order to get more orders and give our clients more convener ,we accept small order.