China 2 inch self tapping metal screws factory wholesale
- NEWSTARWDH
- CHINA
- 7-35 DAYS
- 3000 TONS
Product name: Self Tapping Screw
Standard: ASME B18.6.4 & SAE J81 DIN6901, DIN6928, DIN7971, DIN7972, DIN7973,DIN7976 ,DIN7981, DIN7982, DIN7983, DIN968
Size:#4(2.8)-1/2"
Length: 10-180mm (3/8”- 7”)
Head type:Hex , Flat, Pan, Truss, Round, Hex washer, Oval, Pan framing, Bugle, Fillister,etc
Drive type:Phil, slotted, Phil & slotted combination, Hex socket
Screw type: AB, B, BP, BF, BT, C, D, F, G, T, U
Material: Carbon steel C1018, C1022, CH22A (+ heat treatment), SS304, SS316, SS410
Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G
Self Tapping Screws
Product name | Self Tapping Screws |
Standard: | ASME B18.6.4 & SAE J81 DIN6901, DIN6928, DIN7971, DIN7972, DIN7973,DIN7976 ,DIN7981, DIN7982, DIN7983, DIN968 |
Size: | #4(2.8)-1/2" |
Length: | 10-180mm (3/8”- 7”) |
Head type: | hex , flat, pan, truss, round, hex washer, Oval, pan framing, bugle, fillister,etc |
Drive type: | Phil, slotted, Phil & slotted combination, hex socket |
Screw type: | AB, B, BP, BF, BT, C, D, F, G, T, U |
Material: | Carbon steel C1018, C1022, CH22A |
Thread: | M, UNC, UNF |
Finish: | Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G |
Packing: | bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand |
Application: | Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating |
Equipments: | Caliper, Go&No-go gauge,Tensile test machine, Hardness tester, Salt spraying tester, H.D.G thickness tester, 3D detector, Projector, Magnetic flaw detecter |
Supply Ability: | 3000 tons per month |
Generally refers to the pointed, coarse thread, hard carbon steel screws, aluminum alloy, plastic. A special self-tapping screw for metal hole opening is called wire tapping.
Self-tapping screws are used for non-metallic or soft metal without bottom hole and tapping; self-tapping screws are pointed so that they can be "self-tapping"; ordinary screws are flat and have the same thickness.
Self-tapping screw structure
The self-tapping screws are composed of the head, the rod and the end of the rod from beginning to end. Each self-tapping screw has four major components: head shape, wrenching, thread type, and end pattern. Head shape - the shape of the head is varied. Round head (semicircular head), oblate head, round head flange (with pad), flat head flange (with pad), pan head, pan head flange (with pad), countersunk head, semi-recessed head, Cylindrical head, spherical cylindrical head, horn head, hexagonal head, hex flange head, hexagonal flange (with pad), etc.
Self-tapping screws are mainly used for the connection and fixing of some thinner plates, such as the connection of color steel plates and color steel plates, the connection of color steel plates with purlins and wall beams, etc., and their penetration ability is generally not more than 6mm and the maximum is not more than 12mm.
Advantages of self-tapping screws
Self-tapping screws are often exposed to the outside and have strong corrosion resistance. The rubber seals ensure that the screws are free of water and have good corrosion resistance.
Self-tapping screws are usually described by three parameters: the number of screw diameters, the number of threads per inch, and the length of the screw. The screw diameter series has 10 grades and 12 grades, and the corresponding screw diameters are 4.87mm and 5.43mm respectively; the number of threads per inch length is 14, 16, 24 three levels, the more the number of threads per inch, the more The stronger the drilling ability.
Who We are？
NEW STARWDH INDUSTRIAL CO.,LTD supplies the best fastener product solutions and quality fastener products，Our core products cover ASME/ANSI, DIN, JIS, ISO, GB and other standard products, relying on the company's strong technical team, equipment, resource integration capabilities, including: Bolts, Nuts, Machine screws, Self tapping screws , Self drilling screws, Thread rod, Washers, Anchor bolts and other products. We welcome the customization of our products and have a complete customized production system to meet the different needs of different customers for fastener products.
