Heavy Hex Nuts

DATIAN (DT) Fastener is famous for producing quality heavy hex nuts. We, one of
the professional heavy hex nut manufacturers, have a in house full line heat
treatment machine used to improve the hardness and mechanical properties of
heavy hexagonal nut in order to serve different high requirement areas. The
heavy hex jam nut standard we listed below are most ASTM A194/A563 and
ANSI/ASME B18.2.2 heavy hex nuts. Compare to finished hex nuts, the heavy hex
nut carry higher grade and slightly wider and thicker diameters to meet the
greater length of thread engagement and better resistance to stretching or
widening. Contact DT Fastener, a professional nuts and bolts manufacturing
company, for more info now!

Heavy Hex vs Hex
The first thing to declare is that both heavy hex bolt nut and finished hex
nuts belong to the hexagon nut classification. Simply put, the difference
between them is that heavy hex nuts have larger widths across the flats and
heights of the same nominal size. This gives heavy hex nuts higher load
retention and tensile strength. This also explains why heavy hex nuts can be
heat treated to achieve higher hardness.

There are two production processes for Datian Fastener's Heavy hexagon nuts -
cold heading and hot heading.


The cold heading machine of Datian Fasteners 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.

There are many hex nuts suppliers, but we are one of the best choices for you.

Click to Enlarge