DIN7991 Hex Socket Countersunk Head Bolts

Bolts are threaded fasteners with external male threads and are often confused with screws. A hex cap screw is a type of cap screw with a hexagonal head, designed to be driven by a wrench or spanner. Compared to a hex bolt, an ASME B18.2.1 compliant hex cap screw has tighter tolerances for head height and shank length, ensuring a better fit in most applications. **Product Name:** DIN 7991 Hex Socket Countersunk Head Bolts **Standards:** DIN, ASTM/ANSI, JIS, EN, ISO, AS, GB **Material Options:** Stainless Steel (SS201, SS303, SS304, SS316, SS316L, SS904L, F593), Carbon Steel, High Strength Steel **Steel Grades:** DIN: 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9; SAE: Gr. 2, 5, 8; ASTM: 307A, 307B, A325, A394, A490, A449 **Finishing Options:** Zinc (Yellow, White, Blue, Black), Hot Dip Galvanized (HDG), Black Oxide, Geomet, Dacromet, Anodization, Nickel Plated, Zinc-Nickel Plated **Production Process:** - M2-M24: Cold Forging - M24-M100: Hot Forging - Machining and CNC for Customized Fasteners **Customized Products Lead Time:** - Busy Season: 15–30 Days - Slack Season: 10–15 Days **Stock Products:** - Steel: 4.8 Grade DIN 6923, 8.8 Grade, 10.9 Grade of GB 5783 and GB 5782 - Stainless Steel: All DIN Standard Stainless Steel Bolts **Free Samples:** Available for standard fasteners **Visit Us:** [www.hainafastener.com](http://www.hainafastener.com) **Service Highlights:** - **Professional Manufacturer:** All fasteners are designed and manufactured according to customer specifications and performance requirements. - **Quality Guaranteed:** Rigorous durability testing and advanced technical design to ensure long-lasting performance. - **Cost-Effective:** Competitive pricing with direct factory supply. - **20 Years of Experience:** A wide range of parts and expert solutions tailored to your needs. - **Customized Fasteners:** Services available based on samples or drawings provided. If you're unsure about what you need, feel free to contact us anytime—we're here to help you find the right solution. Whether it's for machinery, chemical industries, construction, or other applications, we have the right bolts for you. Let us assist you in choosing the best fastening solution today!

Jack Compacting Filter Press

The jack Filter Press has a good separation effect and is easy to use. It is widely used in various fields that require solid-liquid separation such as petroleum, chemical industry, dyestuff, metallurgy, pharmaceuticals, food, papermaking and sewage treatment. It is suitable for small filtration industries and is generally used The pressure is low, the filtration field where the filtration pressure is less than 0.4Mpa. The filter press is mainly composed of three parts, namely: the frame part, the filter part, and the pressing device. When the filter press is working, turn the handwheel, drive the lead screw to push the compression plate through the small gear and the large gear, and compress the Filter Plate and filter medium (filter cloth) between the compression plate and the thrust plate, To ensure that the filtered material (slurry) with working pressure is filtered under pressure in the filter chamber. (1) Frame part: The frame forms the basis of the filter press to support the filter mechanism and connect other components. It is mainly composed of thrust plate, compression plate, compression part and main beam. (2) Filtration part: It is composed of filter plates arranged on the main beam in a certain order and filter media (filter cloth) sandwiched between the filter plates to form filter units (filter chambers). (3) Compression part: It is the power device of the filter press, and its main components include small teeth, large gears, and lead screws. The structure design of the whole machine is reasonable, the performance is stable and reliable, the operation is simple, the maintenance is convenient, and the application range is wide. It is an ideal equipment for suspension separation.

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