| Customization: | Available |
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| Material: | Carbon Steel |
| Type: | Hexagon Head |
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Still deciding? Get samples of US$ 0.1/Piece
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| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
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| Standard | GB /T 2672 |
| Diameter | M2-M10 |
| sample service | Free sample but freight cost is paid by customers(when sample is in stock) sample fee(when samples need to be customized) |
| Material | SS304,SS316,SS2205,SS2507 |
| MOQ | 1000 |
| Surface treatment | Plain, black oxide |
| Package | Plastic bag, Boxes and cartons, Pallets, Customized |
| Price terms | EXW, FOB, CIF, etc. |
| Payment terms | T/T, Paypal, L/C, Western union, etc. |
| Certifications | ISO 9001 |
| Note | Free Samples could be provided for standard fastener |
Thread forming screws vs. Thread cutting screws
Thread forming screws and thread cutting screws are two closely related and similar-looking screws used to attach materials together like plastics, wood, or metal. They are characterized by blunt ends which means they need to have a hole primed in the material before they are inserted.
These two screws are more generally known as tapping screws because of their ability to mate threads into the material they are driven to. As opposed to standard machine screws with the same thread pitch, tapping screws are made with harder metal and a different point geometry that allows them to create their own thread into a primed hole. They are usually case hardened, have very high tensile strength and torsional strength values.
A thread cutting screw creates a thread by cutting into the material. It has a cutting edge and a chip cavity that allows it to remove bits of the material it is being driven into. The cutting motion means that less torque is needed drive in a thread cutting screw and that the material experiences minimal internal stress because it does not get compressed. However, the cutting action also leaves a very small clearance between the screw and the material which may lead to further damage if the assembly vibrates regularly.
Thread Type:
Different Type for Thread cutting:
| Nominal Diameter d | M3 | M4 | M5 | M6 | M8 | |
| P | Pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 |
| s | 5.5 | 7 | 8 | 10 | 12 | |
| k | max | 2.5 | 3.5 | 4.3 | 5 | 6.8 |
| min | 2.3 | 3.3 | 4.1 | 4.8 | 6.6 | |
| dc | max | 7.5 | 9.5 | 11.2 | 13.2 | 16.5 |
| min | 7.3 | 9.3 | 11 | 13 | 16.3 | |
a) Good after-sale service, all questions will be replied within 12 hours.
b) Customized design is available. ODM&OEM are welcomed.
c) We can provide free sample, consumer should pay the freight first.
d) Convenient transportation and fast delivery, all available shipping ways could be applied, by express, air or sea.
e) High quality and most competitive price.
f) Advanced produce and inspecting equipments.
1.Can I order a small list ?
---Of course, you can.
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