Cummins mechanical parts hexagon bolt

 Hex bolts are hex head bolts (partial threads) - Class C and hex head bolts (full thread) - Class C. Also known as hex head bolts (crude), hair hex head bolts, black iron screws.
The commonly used standards can be found in: SH3404, HG20613, HG20634, etc.
Hexagon bolt: A type of fastener consisting of a head and a threaded rod (cylindrical body with external threads), which is required to cooperate with a nut to fasten two parts with through holes.
This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

The connecting rod bolts of diesel engines are used once and are not allowed to be reused. If the connecting rod bolt is repeatedly used, due to the greater stress, the bolt is elongated, which can easily cause the bearing bush to fail due to insufficient bolt fastening force; at the same time, due to the lack of fastening force, the clearance between the bearing and the crankshaft journal Increased, resulting in low oil pressure, resulting in excessive wear of the bearing and tile burning accident. The diesel engine is a highly-reinforced diesel engine. The connecting rod is subject to a greater impact load and is much larger than an ordinary diesel engine. Repeated use of connecting rod bolts can easily lead to fractures, destroy the engine cylinder block, and cause the engine to be scrapped. In some units, even if the connecting rod bolts were replaced, a breakage failure occurred, and the connecting rod bolts of some engines suddenly broke during operation.

 1. OEM Manufacturing welcome: Product, Package... 
2. Sample order 
3. We will reply you for your inquiry in 24 hours.
4. after sending, we will track the products for you once every two days, until you get the products. When you got the goods, test them, and give me a feedback.If you have any questions about the problem, contact with us, we will offer the solve way for you

 Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white 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, DDU.

Q4. How about your delivery time?
A: Generally, it will take 30 to 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. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

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.