Bolts with weakened threads GOST 7798 for subsequent thermal diffusion galvanizing up to 50 microns

drawing МК_Б1_30632

Purpose

For subsequent galvanizing with a coating thickness of more than 15 microns with the use of galvanized fasteners in harsh environmental conditions. Parameters of the bolt geometry in accordance with GOST 7798.

Characteristics

Packaging and labeling

 

Packaging

In wooden boxes of 50 kg. The boxes are on pallets.

Specifications

 

Characteristics:

1. preservation of thread tolerances of 6g after galvanizing by loosening the thread to the required coating thickness;

2. preservation of mechanical properties of the required bolt strength class with a weakened thread;

3. cleaning the surface of the fastener from technological lubricants to obtain a high-quality galvanized coating.

The average diameter of the dsp thread
+120...200 microns depending on the required coating thickness
The internal diameter of the thread inside
+120...200 microns depending on the required coating thickness
Thread diameter, mm
Product length, mm
Accuracy class
Strength class
Steel grade
М16
50-140
В
5.8
20
М20
60-140
В
5.8
20



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