Lencería
Heavy Hex Nuts
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Legend: |
Making |
P=pitch |
Carbon Steel: 2H,2HM,7 |
K=height of the nut |
7L,8,8M,8S,10S,12 |
D=the nominal diameter of the thread |
Thread: UNC, UNF |
E=The length of the diagonal |
Surface: BLK,ZP,HDG,etc |
S=The length of the flat |
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Datian Heavy Hex Nuts Production Process
There are two production processes for Datian Fastener's Heavy hexagon nuts - cold heading and hot heading.
The cold heading machine of Datian Fastener has the ability to form the nut from raw material to finished product at one time. Our cold heading machine integrates the rolling thread machine and the cold heading machine to maximize efficiency, ensure the customer's delivery requirements, and minimize the labor cost, which makes the price of our heavy hexagonal nut competitive all over the world.
Hot forming: Generally, hot forming is selected for larger fasteners, and the diameter range are generally 1''~4''~(M30~M100) or even larger. The material used in the hot heading machine is generally round steel, without cold drawing and pickling. The production step is to cut the material first, and then upsetting by the punch. The surface of the semi-finished product of red punching is rougher than that of cold heading. After tapping, the two sides of the nut are chamfered with a CNC machine, and finally it is completed after heat treatment and surface treatment.
Cold heading and hot heading are roughly divided into the following steps: Cold heading: wire drawing - cold heading - (heat treatment) - tapping - surface treatment
Hot forming: cutting material - red punching - chamfering - turning - (heat treatment) - tapping - surface treatment Or cutting material - upsetting ball - annealing, phosphating - forming - punching - (heat treatment) - tapping - surface treatment.
Heavy Hex Nuts FAQs
Why use a heavy hex bolt nut?
Heavy hex nuts have larger opposite sides and are thicker. In the fastener manufacturing industry, general hardware fasteners are used in normal temperature, normal pressure, and non-strong corrosive media, and each fastener will be subjected to different loads during use.
What grade are heavy hex nuts?
2H, 2HM, 7,7L 7M, 4,4L,6 8/8A, 8C/8CA, 8M/8MA, 8T/T8TA
ASTM A563/A563M Heavy Hex Nuts: DH, A, C, 8S, 10S, 10, 12
As one of hex nut manufacturers, we will do our best to meet all the needs of customers.
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