Product introduction

The bolt is made of stainless steel, which is produced by the stainless steel disc element through the cold pier machine. The exterior color is silver. The head is semicircular, with a square shape underneath, and the end is filled with threaded rods.

Product parameter (specification)

MON	M6	M8	M10	M12	M16	M18
P	1	1.25	1.5	1.75	2	2.5
E MIN	7.64	10.2	12.8	15.37	20.57	25.73
K1 MAX	3	3	4	4	5	5
K1 MIN	2.4	2.4	3.2	3.2	4.2	4.2
K MAX	3.6	4.8	5.8	6.8	8.9	10.9
K MIN	3	4	5	6	8	10
R MIN	0.5	0.8	0.8	1.2	1.2	1.6
S MAX	6.48	8.58	10.58	12.7	16.7	20.84
S MIN	5.88	7.85	9.85	11.82	15.82	19.79

Product feature and application

Insert the square of the head vertically into the groove of the connected piece, extend the height of the protruding surface, and tighten the screw from the reverse side.

The stainless steel carriage screw is mainly placed in a threaded hole in the groove for connection and use. The square neck part of the carriage screwdriver prevents the bolt from rotating in the same direction during the installation process.

Semi-circular head square neck bolts, The scope of application is very wide, at least: electronics manufacturing, machinery equipment industry, chemical industry, valve industry, medical equipment industry, automotive industry industry, aviation industry, etc.

Production details

The head of the square neck bolt with large semi-circular head is straight and large in diameter, but its thickness is slightly thinner.

The semi-circular head square neck bolt has the characteristics of high precision, high toughness and high quality.

Production qualification

Our factory mainly produces stainless steel fasteners and various non-standard customized stainless steel products. We have more than 10 technical patent certificates, as well as CE certification, SAC / TC 85, ISO90001, CQM quality certification standard certificates and so on.

Deliver shipping and serving

Package: Cartons & pallets or according to customer's requirement.

We will use cartons and cartons for packaging. Then wooden pallets and wooden boxes will be used for outer packaging. If customers have special packaging requirements, we will do packaging according to customer needs.

Shipping method: We can provide various shipping methods such as sea, air and mail. We can also provide transportation services according to the special needs of customers.

Our services and advantages

1. We are a factory and we have the right and strength to design and produce.

2. Hex head bolt samples are free.

3. We will answer your inquiry within 24 hours.

4. After sending, we will track the product for you every two days until you get the product.

5. When you receive the goods, test them and give me feedback. If you have any questions about our goods, we will provide you with solutions.

FAQ

Q1. Are you trading company or manufacturer ?
A1: We are factory.

Q2. What is your main products? A1:Our main products are fasteners: bolts, screws, rods, nuts, washers. A2:Meantime, our company also produces non-standard stainless steel products according the drawing .

Q3. How to ensure that every process's quality?

A3:Every process will be checked by our quality inspection department which insures every product's quality. In the production of products, we will personally go to the factory to check the quality of products.

Q4. How long is your delivery time? 

A4:It depends on if we have stock or not ,if we have the stock goods,we can delivery it within 3 days after receive the payment.And normally our production time is in 20 days for one container (20-26 tons) .

Q5.What is your payment method?

A5:30% value of T/T in advance and the balance 70% before delivery .

Q6.What about the warranty ?

A6:We are very confident in our products,and we pack them very well to make sure the goods in well protection. To avoid any subsequent trouble regarding quality issue,we suggest you check the goods once you receive them.If there is any transport damaged or quality issue,don’t forget take the detail pictures and contact us as soon as possible,we will properly handle it to make sure your loss to reduce to the smallest .

Q7.Can you provide a sample?

A7:Sure, Our sample is provided free of charge, but not including courier fees.

Q8.Could you send me your catalog and price list ?

A8:As we have more than thousands of products,it is really too hard to send all of catalogue and price list for you .Please inform us the style you interested,we can offer the price for your reference .

http://www.quintafastener.com/