Chinese Standard ( GB T41 - 2000 ) Hex Lock Nut Iron Galvanized

Product description:

Hex nuts according to the nominal thickness is divided into I type, II and thin three. 8 or more nuts are divided into type I and type II two types.
Type I hex nuts are the most widely used. Type I nuts are divided into three grades A, B and C, of which A and B nuts are suitable for machines, equipment and structures that require less surface roughness and require higher precision C-level nuts are used for rough surfaces and low precision machines, equipment or structures. Type II hex nuts are thicker and are often used where disassembly and assembly are often required.
Type I nut refers to the nut nominal height m ≥ 0.8D ordinary hex nuts, the type size should be consistent with the provisions of GB / T 6170;The height of type II nut is higher than that of type I nut. The type and size should be in accordance with GB / T6175. The purpose of adding II nuts is twofold: First, get a nut that is not heat-treated and has a low cost by increasing the height of the nut.
Because D ≤ M16 8-level I-type nut without heat treatment, it is in the 8-level nuts, only D> M16 ~ 39 specifications with type II nut,
Obviously without the heat treatment of type 1 nut can not reach the mechanical properties of 9-level nut requirements. Specified Type II nut for another purpose to obtain better toughness 12-level nut. As the nut height increases, the lower the quenching and tempering hardness can be achieved to ensure that the stress indicator, it increases the nut toughness.

Features:

Easy to install
Integrity
No gasket required
Easy to disassemble
Reusable medium carbon steel
Can be used with 8.8, 10.9 and other high-strength bolts
By the US military-MIL-STD 1312 Vibration Test7.Results detected by Junker Test detection
Through Dynamic Test testing

application:

Automotive - cars, trucks, buses
compressor
Construction machinery
Wind power equipment
agricultural machine
Foundry industry
Drilling equipment
Shipbuilding industry
military
Mining equipment
Oil Drilling Rig (onshore or offshore)
public facilities
Rail
Drive system
Metallurgical equipment
Drilling hammer
Building and so on

Product parameters: