China wholesale Gr8.8 Black Bolt Supplier – Hexagon Head bolt Fine Coarse thread UNC＆UNF – Zhongli bolts

● Place of origin: Ningbo, China

● Min quantity request: 900kgs per size

● Brand Name: ZYL

● Material: 35k 45k 40Cr etc

● Dia: M8-M36

● Surface treatment: Black oxide, Zinc Plated

1. The pitch of coarse teeth is large and that of fine teeth is small. 2. Thick ones have high strength, while thin ones are well sealed. 3. Coarse-tooth bolt pattern has stronger fatigue resistance, which is convenient for frequent disassembly, fine-tooth self-locking ability, large bottom diameter and strong static load capacity.

UNC＆UNF bolts are made of carbon steel C1035 C1045 for Gr5, 40Cr for Gr8

Black oxide、Zinc Plated、dacromet

Gr5、 Gr8

1. Are you a UNC＆UNF bolt manufacturer?

Yes, we are a UNC＆UNF bolt factory.

2. What does your company have?

We mainly produce hex bolts, hex head flange bolts, Hexagon Socket Head Cap Screws, stud bolts, hex nuts, etc.

3. How does the payment process work?

According to the specific situation, our payment terms are flexible. Generally, we recommend 30% deposit, and the balance against copy B/L

4. What about after-sales?

When our metal parts are suitable for your products, we will follow up and wait for your feedback. Our experienced engineers are willing to help with any problems related to our metal parts.