- wheel knurl bolts
- 1 Year Warranty
- Strong and Durable
M12x1.5 Color Zinc Screw Knurl Studs
black oxide, chrome, zinc,dacromat, etc.
M12x1.5, M12x1.25, 1/2"-20, 7/16"-20,M14x1.5,M14x2.0 and so on
OPP Bag,Neutral Box,Color Box,Head Card,Plastic Box or as request
ISO9001, TS16949, BV, SGS, TUV
The accuracy thread of wheel nut and bolt is very important.
Many factories like to debase quality in this part, such as increase the thread hole of wheel nut, change the bolt with thin thread diameter. They do this because they can save the material and make thread easily. How ever it will affect match fastness of the thread.
To judge the accuracy of thread, firstly we need to check the sharpness of thread, the sharper the better.
In addition, we also need to check it with professional checking tool: screw plug gauge and thread ring gauge. Request : go gauge smoothly, no-go gauge less than 2 screws.
Each product in “HONISHEN” need check one by one by hand, it’s 100% test. Even though it takes us much time and cost, we ensure the product that we offer to you is “perfect”. “HONISHEN” always insist this.
This is SGS neutral salt and spray test of our products. It doesn’t rust after 120 hours.
salt and spray test result from SGS.pdf
We have several kinds of package. The most popular one is blister,20 pcs nuts with one key. Another is blister with box. If you want sell it in Amazon, you could also choose color box, when you open it, there is sponge to protect products. You could print your company name or logo on box. We also have neutral box, you could choose white, black or brown.
During the production process. each product receive strict quality check, then we can send them to our customers. Quality Control includes 4 steps: first check – self check – tour check – finial check
We ask worker do 100% self check.
When order is big, we checked it by automatic thread inspection machine, which is purchased from Taiwan, we could choose full automatic thread check in order to save cost, but the nuts in the vibrating disk is have chance to scratch, so we ask worker put the product by hand. Otherwise, if small order, check products by workers.
After package,each carton will put a QR CODE sticker. When we scan qr code with PDA, we could know material batch,production size, production process, which worker make each process and so on.
Welcome to visit our factory -- Changzhou Hongsheng Machine Fittings Factory
Changzhou HongSheng Machinery Fittings Factory also known as "Changzhou Drinty Auto Parts Co., Ltd" founde in 2000, it is a research, development, design, manufacture, sales in one of the professional auto parts manufacture.The main products are wheel nuts, high -strength bolts, wheel locks , hub centric rings , wheel spacers and socket wrench.The company has a skilled team; equipped with many advanced production equipments, such as digital multi-function machines, precision CNC machine tools, automatic electroplating production line
We also imported a variety of testing facilities, established the quality inspection center.In order to ensure high quality, we need to use these equipments to test our products, hardness tester, Pulling strength tester, torque meter, and plating thickness tester, salt spray testing machine.
We get ISO / TS16949 certificate, products are proved by TUV, BV and SGS. we also have 10 utility model patents and 4 design patents, provide a strong guarantee, high quality and good service.
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q4. How about your delivery time?
A: Generally, it will take 60 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and
the courier cost.
Q7. What is your MOQ?
A: For pc, 5000pcs each thread size
For 4+1 set, 1000 sets each thread size
For 16+1 set, 320 sets each thread size
For 20+1 set, 250 sets each thread size
Q8: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.
Our company adheres to the business philosophy of "To achieve success through good quality", constantly optimizes product structure, perfect pre-sales and after-sales services,
and strives to build a first-class "Hongsheng" brand!