The self-reversing screw product does not require the driven screw to change its direction of rotation to enable the nut to return to its original start position. The reciprocated bi-directional movement is achieved by using a follower blade in the nut, that is matched to the particular groove width and screw turn round on the screw.
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Each tapping screw consists of a head, a rod, and a rod end. Each tapping screw has four elements: head shape, screw type, thread type, and end form.
1. Head shape (head type)
Various head shapes. There is a round head (semicircle head), flathead, round head (with pad), flathead flange (with pad), pan head flange (with pad), countersunk head, countersunk head, cylindrical head, spherical cylindrical head, horn head, hexagonal head, hexagonal flange head, hexagonal flange head (with pad) head.
2. Pulling mode (trough type)
Wrench mode refers to the way to twist the screw head when installing and fastening screws. The basic method has two kinds: outside pull and inside pull. In general, the torque of the outer wrench is greater than that of any form of inner wrench (inner groove). Screw: hexagonal, hexagonal flange, hexagonal flange, hexagonal flower shape, etc.; Screw inside: a word groove, cross groove H, cross groove Z, cross groove F, square groove, compound groove, inner spline, inner hexagon flower shape, inner triangle, inner hexagon, inner 12 Angle, clutch groove, six-leaf groove, high torque cross groove, etc.
3. Thread type
There are many kinds of threads, including self-tapping thread (wide thread), machine thread (ordinary thread), drywall thread, fiberboard thread, and other special threads. In addition, threads can be divided into single lead (single head), double lead (double head), multiple leads (multi-head), and high and low tooth double head threads.
4. End Style (tail)
The end style mainly has a cone end and a flat end. However, grooves, grooves, notches, and orbits similar to the shape of a drill can be machined at the end of the screw-in portion, depending on the use. In some standards, cone end or flat end also have different forms, such as round head end.
Frequently asked questions about Pricing Plan
What is the lead time?
About 15~25 days (exact delivery time depends on specific project and quantity)
How do you guarantee quality?
We have a professional quality control department to ensure quality.
Can you cut and bend?
Yes, we have professional engineers
If I send drawings, can you send a quote?
Yes, send drawings to us to get free quotation information.
What type of work does your company specialize in?
We are manufacturer of sheet metal fabrication, CNC machining
, who good at providing Custom machining service.
The final interpretation is owned by our company
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What's kinds of information you need for quote?
Kindly please provide the product drawing in PDF,and will be better you can provde in.dwg / .stp / . igs / .stl , Send drawing
Can you provide design services?
Yes , of cause . Just provide product requirements and USES , we will design for you ,also we can provide customized hardware for you base on your idear / samples / drawing or other way. Leave a message
How long can i get the sample?
Depends on your specific items,within 1-15 days is required generally. Get the exact delivery date
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