China 40cr Round Head Bolt 10.9 Grade Universal Shaft Bolts

Material Grade:40Cr

Quality Level: 12.9, 10.9, 8.8, 6.8, 4.8 Grade

Sizes: M20,M24, M27,M30,M36,M42,M45;

Specification:M48 x 150,M48 x 180,M48 x 210,M48 x 330,M48 x 370,M48 x 390,M48 x 600,M48 x 700,M48 x 900,M48 x 1080

Bolt-head Shape: Oval head, Square head,Ellipse head,Round Head Bolt;

Special Features:

1. The high strength bolts have been widely used in large ball mills up to dia.12-meter mills.

2. The high strength screws can be reliably used in small,middle and large cement mills,coal mils and mine mills.

3. The high strength bolts have been properly heat-treated to achieve better mechanical properties.

4. The standard bolt units include one rubber ring,concave washer,spring washer and nut.

Chemical Composition:

Composition (%)

C

Si

Mn

Cr

Ni

S

P

Cu

40Cr

0.37-0.44

0.17-0.37

0.5-0.8

0.8-1.0

≤0.3

≤0.035

≤0.035

≤0.03

Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5~10 days if the goods are in stock.Or it is 45 days if the goods are not in stock, it is according to quantity.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shipment
irrevocable LC at sight.