Dear customers,

If you are dealing with some machinery Made in China,You probably would like to hunt for a suppliers like us-JT SCREW.

At JT SCREW,when you need to purchase Chinses Screw, We will see if we could and do our best to save time for your purchasing.

Many Thanks for Your Attention!

Have A Good Day.

Material: 38CrMoAlA  (JIS JACM645)

Hardness After Hardening&Tempering: HB240-280

Nitrided Hardness: HV850-1000

Nitrided Case Depth: 0.45-0.7mm

Nitrided Brittleness: Less Than Grade2

Surface roughness: Ra 0.4

Screw rod straight dimension: 0.015mm