Fasteners: Thread Forming Screws with Different Length

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10000000 pc/month

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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)

  • Brand Name: CMAX

Packaging & Delivery

Packaging Details:box,carton,pallet
Delivery Detail:30days or advance

Specifications

Thread forming screws

Material:Steel or stainless steel
According to drawing

 

1,Products Detailes
Productsbolt,screw,nut,washer,pin,rivet and non-standard fastener
SizeStandard and Non-standard according to drawing or samples
Machinesauto pressing machines, automatic heading machine, cold header high-precision surface grinder machine, involantary grinder machines,Digital Micro Vickers Hardness tester, Electrolytic metrical thickness gauge, Vision Measuring Machine,Fischer Scope X-ray Thickness Gauge and so on
Material1.Stainless Steel: SS201, SS303, SS304, SS316, SS410, SS420
2,Steel:C45(K1045), C46(K1046),C20
3.Brass:C36000 ( C26800), C37700 ( HPb59), C38500( HPb58),
C27200CuZn37), C28000(CuZn40)
4.Bronze: C51000, C52100, C54400, etc
5.Iron: 1213, 12L14,1215
6.Aluminum: Al6061, Al6063 etc
7,.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045
8, Alloy steel: SCM435,10B21
Surface FinishingZn- Plated,Ni-plated,Passivated,Tin-plated,Sandblast and Anodize,Chromate, Polish,Electro Painting,Black Anodize,Plain,Chrome plated,Hot Deep Galvanize(H. D. G. ) etc.
Heat TreatmentTempering,Hardening,Spheroidizing,Stress Relieving.
StandardISO,GB,DIN,JIS,ANSI,BSW
Manufacture ProcessHeading/washer assembly/Threading/Secondary machine/heat treatment/plating/Anti-slipping/Baking/QA/Package/Shipping
Sample we can supply the samples for free,if the samples we have in stock
Lead time10-15 working days as usual,It will based on the detailed order quantity.
Carton size36*24*16 CM &36*24*12 CM
Pallet size110*100*90 CM
Warrantywe confirm our goods will satisfy your request of 100%
After sales servicewe will follow up goods for every customer and help solve problem after sales.

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Q:How to rust the screw
First with gasoline drops into the gap, a few minutes later and then drip a little oil, wipe the cross groove, and then screwdriver twist, not on the use of clamp clamp clamped after the screw, such as cross recess round, On the use of steel saw saw a word slot, for the word screwdriver twist, the last one with a drill to the bolt screw off, re-drilling punching.
Q:What is a self-tapping nail? Is it used? What are the characteristics of the shape? What is the difference with ordinary screws?
Self-tapping screw head shape with round head, flat head, semi-countersunk head and countersunk head and so on. Materials generally carburized steel, heat treatment after the surface hardness of not less than 45HRC.
Q:How is the screw to use?
1, first clear the broken screw on the surface of the sludge with the center of the center of the gun will be killed by the center of the drill and then drill with a diameter of 6-8 mm drill bit in the center of the drill hole drilling, pay attention to the hole must drill through. After the hole is drilled, remove the small drill bit and replace the drill with a diameter of 16 mm. Continue to expand the hole of the bolt and drill it through. 2, take the diameter of 3.2 mm below the use of small and medium current in the broken bolt in the drilling from the inside to the outside of the surfacing welding site to take the beginning of the bolt half of the length of the bolt can not start too long So as to avoid breaking the outer wall of the broken bolt. Surfacing to the upper end of the broken bolt and then continue to pile out a diameter of 14-16 mm high 8-10 mm cylinder. 3, after welding with a hand hammer hammer its end point so that the broken bolt along its axial vibration.As the previous arc heat and subsequent cooling coupled with the vibration at this time will break the bolt and the body of the thread Between the resulting loosening. 4, carefully observed when you find a trace of rust after the break from the fracture when you can take the M18 nuts in the surfacing stigma and the two welding. 5, after welding with a cool hot plum wrench on the nut around the back and forth twist can also be back and forth twist side with a small hammer hammer the end of the nut so that you can remove the bolt off. 6, remove the broken bolt with the appropriate tap to the fabric within the rack to remove the hole to remove the rust and debris.
Q:The cross screw of the cross screw was polished and how the screws were unloaded
First with a diagonal pliers to screw out the word screwdriver of the gap, you can also use the saw blade, if it is embedded in the shell can only use the diagonal pliers. This solves the problem of the screwdriver, the next step is to twist, and use a diagonal pliers or other tools to insert the bottom of the screw cap, so that the pry can come out.
Q:What does the screw m4x6 mean?
Mark the problem if the 6 M4 screws should be marked 6XM4; if the 6mm long M4 screws should be marked M4XL6. On these two possibilities, you consider yourself now
Q:What is the invention of the screw?
Screws Today, many things are screwed together. Look around the house, the eyes see all kinds of things - from furniture to food processors, are connected with screws. The spirits were invented more than 2,000 years ago, but less than 500 years for fixing things. The first man who describes the spiral is the Greek scientist Archimedes (about 287 BC - 212 BC). The Archimedean spiral is a huge spiral in a wooden cylinder that is used to raise water from one level to another and irrigate the fields. Its true inventor may not be Archimedes himself. Maybe he just described something that already existed. Perhaps it was the ancient Egyptian craftsmen who had designed it to use the irrigation on both sides of the river. Archimedes spiral in the ancient society are used to raise water, no one considered to change it into a fixed piece. Right: Archimedes spiral is widely used for water. For example, the Romans used it to drain the mine. In the Middle Ages, carpenters used wooden nails or metal nails to connect furniture and wooden structures. In the 16th century, nail workers began to produce spiral nails, these nails can be more firmly connected things. It was a small step from this nail to the screw. At the end of the eighteenth century, screws were quite popular as fixed parts, because at that time a cheap production method had been found. Screwdriver (chisel) appeared in London around 1780 years.
Q:How is the screw produced
There are three types of technology: cold heading, red, turning; rolling teeth generally have four kinds of technology: rubbing teeth, rolling wire, teeth, car teeth; but our screw industry is the most common Is the beginning of the cold heading, the machine rubbing teeth, so that large output, low cost
Q:What screw can get into the iron?
Because this screw (metal self-tapping screw) than iron, can eat iron. Coupled with its special design type, so it can be drilled less than its small diameter in the hole. So you have to first drill with a drill before drilling a hole smaller than its diameter it is possible to drill into.
Q:How does the screw twist?
For the "word" and "cross" head screws can be upright screwdriver, vibration screwdriver back (pay attention to intensity), and then twist.
Q:What tools are used to remove the screws, the two lines are grooves, the middle of a paragraph is convex
As for the professional name is not clear, probably should be called forked screwdriver it

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