Galvanized Hexagon Socket Head Cap Screw

Similar to countersunk screws, the Hexagon Socket Head Cap Screw is buried in the machine, and the connection strength is greater, but the screw must be assembled and disassembled with the corresponding specification Allen wrench. Generally used on various machine tools and their accessories.

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Product Details

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What is Galvanized Hexagon Socket Head Cap Screw?

Commonly used hexagon socket head screws also have 4.8, 8.8, 10.9, and 12.9. Also called hexagon socket screws, also called hexagon socket bolts. Its head is hexagonal and cylindrical. According to the material, there are stainless steel and iron. Stainless steel has stainless steel SUS202 hexagon socket head screw. This is a common stainless steel material. There are stainless steel SUS304 hexagon socket head screw and stainless steel SUS316 hexagon socket head screw. The iron is classified according to the strength grade of the hexagon socket head screw. There are 4.8 grade hexagon socket head screws, 8.8 grade hexagon socket head screws, 10.9 grade hexagon socket head screws, and 12.9 grade hexagon socket head screws. Class 8.8-12.9 hexagon socket head screws are called high-strength, high-grade hexagon socket bolts.

Hardness of Galvanized Hexagon Socket Head Cap Screw

Hexagon socket bolts are classified according to the hardness of the screw wire, tensile force, yield strength, etc., which is the grade of the hexagon socket bolt and what is the grade of the hexagon socket bolt. Different product materials require different grades of hexagon socket bolts to correspond to them. All hexagon socket bolts have the following grades:
Hexagon socket bolts are divided into ordinary and high-strength according to their grade strength. Ordinary hexagon socket bolts refer to grade 4.8, and high-strength hexagon socket bolts refer to grades 8.8 and above, including grades 10.9 and 12.9. Class 12.9 hexagon socket bolts generally refer to knurled, natural black hexagon socket head screws with oil.

The performance grades of hexagon socket bolts for steel structure connection are divided into more than 10 grades such as 3.6, 4.6, 4.8, 5.6, 6.8, 8.8, 9.8, 10.9, 12.9, among which the bolts of grade 8.8 and above are made of low-carbon alloy steel or medium-carbon steel. After heat treatment (quenching and tempering), they are generally called high-strength bolts, and the rest are generally called ordinary bolts. The bolt performance grade label consists of two numbers, which respectively represent the nominal tensile strength value and the yield ratio of the bolt material.

Hexagon Socket Head Cap Screws craft
Hexagon Socket Head Cap Screws craft

Crafting process of Galvanized Hexagon Socket Head Cap Screw

1. Drill holes according to the diameter of the opposite side of the inner hexagon to the requirements.
2. Upsetting the inner hexagon with a cold heading machine.
3. A single piece can be punched out with a hex punch.

Application of Galvanized Hexagon Socket Head Cap Screw

Similar to countersunk screws, the Hexagon Socket Head Cap Screw is buried in the machine, and the connection strength is greater, but the screw must be assembled and disassembled with the corresponding specification Allen wrench. Generally used on various machine tools and their accessories.

Performance requirements of Galvanized Hexagon Socket Head Cap Screw

1. The nominal tensile strength of bolt material reaches 400MPa;
2. The yield ratio of the bolt material is 0.6; the nominal yield strength of the bolt material reaches 400×0.6=240MPa.
Performance grade 10.9 grade high-strength bolts, after heat treatment, can reach:
1. The nominal tensile strength of bolt material reaches 1000MPa;
2. The yield ratio of the bolt material is 0.9; the nominal yield strength of the bolt material reaches 1000×0.9=900MPa.
The meaning of the performance grade of hexagon socket bolts is an international standard. The performance of the bolts of the same performance grade is the same regardless of the difference in material and origin. Only the performance grade can be selected in the design.
The classification of hexagon socket bolts is basically like this, and the price on the market is definitely different for different grades. The price of general high-strength hexagon socket bolts is definitely higher than that of ordinary hexagon socket bolts. Generally used in the market are 4.8 grades, 8.8 grades, 10.9 grades, and 12.9 grades.

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Basic concepts of Prince Fastener screw production

1、Prince Fastener Manufacturing screw can be divided into: cold heading, hot machining (turning, milling, etc.)
2、Cold heading is the use of plastic metal, by using cold mechanical pressure or drawing, reaches the metal solid deformation of.
3、Hot upsetting is the material after heating and pressure processing make the shape of the material to meet the
designrequirements.
4、Prince Fastener Machining is a small batch of special or special bolts of the six corners of the head is turned into after the milling.
5、 Screw bolt thread: mechanical and manual threading, similar to die.
6、 Milling tail: generally completed by the end of the Prince Fastener cutting machine.
7、 The difference between cold and hot upset: cold heading bolts` surface are more beautiful, dozen red bolt surface oxide skindoes not look good; cold heading high production is efficiency; general Prince Fastener M24 bolts will need to play red;

Analysis of the causes of the phenomenon and the causes of the forming process

1、Eccentric: two red and improper installation and adjustment machine.
2、Minow: a poor installation and improper Prince Fastener adjustment machine at.
3、Head is not round: the choice of a die or a punch forming is not enough.
4、Play the mode of crack: crack or die R angle, so that the model is hit by the two collision.
5、Head double: bad punch.
6、Flash: a bad, punching molding is mainly between punch and die hole clearance is too large or too short by red bars.
7、Crack angle: the punch needle burst or two punch and punch is not heavy.
8、Head cracking: material, or a die using error (such as pan head Hexagon washer head of a die), and lubricating oil.

Analysis of adverse phenomena and causes of common rolling

1、Processing crack: tooth plate and adjust the Prince Fastener old machine.
2、Blunt tail: the machine is not properly adjusted, the tooth plate is too old.
3、Crooked tail: the control screw on the seat board seat is too tight.
4、Tail: tooth wear plate and improper adjustment machine.

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Prince Fastener Manufacturing is committed to serving world’s major distributors, wholesalers, retailers, enterprises , and terminal customers, and can customize all kinds of fasteners, non-standard parts according to various requirements of  customers to provide overall supporting solutions for customers in different industries and makes customers to achieve convenient and fast” One-stop fastener purchasing”experience

We can manufacture and customize all types of fasteners for a wide range of industries

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Q:The quality of your Drywall screw for metal?

A:Prince fastener has advanced production and testing equipment .Every products will be 100%
inspected by our qc department before shipment

Q: Are you trading company or manufacturer of Drywall screw for metal?
A:Prince fastener is a factory with 30 years of manufacturing experiences in Shanghai,China.

Q: What is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to
quantity.

Q: Do you provide Drywall screw for metal samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge and customers only afford the freight costs.

Q: What is your terms of payment ?
A: 30% T/T in advance ,balance before shippment.

Q: Why choose us?
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2)Experienced staffs would like to answer all your questions in time.
3) Customized design is available. ODM&OEM are welcomed.
4)Special discount and protection of sales are provided to our consumers.
5) Prince fastener can provide free sample, consumer should pay the freight first, and the expensive sample cost will be added in the next order.
6) As an honest exported seller, Prince fastener always use professional factory, quality quotation, good service, skilled
technicians to ensure our products to be finished in high quality and stable feature.

Q:How about your price?
A:Quality products with reasonable price. Please give me a inquire, we will quoted you a price for you refer at once.

Q:What kind of products do your factory manufacturing?
A:Our main products are: drywall screw,chipboard screw, machine screw,self tapping screw,self drilling screw,Non/standard
screws,Engineering fastener(High strength bolts;Nuts;Washers;Anchor),Stainless steel screws,Self Drilling Screw, Self Tapping Screw, Thread Rolling Screw, Thread Cutting Screw, Machine Screw, Concrete Screw, Roofing Screw,
Drywall Screw, Particle Board Screw, Chipboard Screw, Construction screws, Coach screws, Lag screw, Wood Screw, Euro
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