Product Details
ASTM A325 / a325m large hexagon bolt, heavy hexagon head bolt
Product Description:
Square head bolts are divided into 4.8 class bolts, 8.8 class
bolts, 10.9 class bolts and 12.9 class bolts according to the grade
of high strength.It is widely used in the electrical and electronic
industry, water conservancy engineering industry, electrical
products, mechanical equipment, chemical equipment, ships,
vehicles, steel structures and so on.
It is distinguished from other bolts by its shallow mushroom head
and that the shank cross-section of the bolt is circular for most
of its length, but the portion immediately beneath the head is
formed into a square section.Carriage bolts are designed to sink
into the wood as you tighten the nut, essentially creating their
own pockets. Except you're building with very hard wood, this
should work fine.Carriage bolt is designed to sink into the wood as
you tighten with nut, essentially creating their own pockets.
Unless you're building with very hard wood, this should work fine.
You can tap the bolts inward with a hammer as you tighten the nuts
to assist.Carriage bolts are designed so that on one side of an
assembly that there are no protruding bits for things to catch on.
The round head part will provide that as opposed to there being a
hex or square head sticking out. In your case with a chair kit the
general idea is that the heads of the carriage bolts should face
toward the side of the chair where the user will be. As such the
threaded bolt ends will want to be down underneath or toward a
generally non use for surface of the chair.
Specification:
Name: | Grade 10.9 , 12.9 Stainless Steel M2 - M100 Square Head Bolt Full
Thread |
Size: | M2 - M100 |
Material: | Stainless Steel |
Standard: | DIN, ANSI, GB, ISO, BS |
Production Process: | Hot Forging |
Class: | Grade 10.9 , 12.9 |
Type: | Round Head |
Thread: | Full Thread Or Half Thread |
CHEMICAL COMPOSITIONG |
Group | C | Si | Mn | P | S | Cr | Mo | Ni | Cu | Characteristic |
304-A2 | 0.1 | 1 | 2 | 0.05 | 0.03 | 15-20 | | 8-19 | 4 | Medium hardening rate, suitable for general cold processing and
stretching, cold processing performance is good, commonly used for
external hexagonal bolts, nuts and gaskets products. |
|
316-A4 | 0.08 | 1 | 2 | 0.045 | 0.03 | 16.18.5 | 2-3 | 10-15 | 1 | Adding molybdenum, corrosion resistance is better than 304,
especially suitable for seawater and chemical media, more corrosion
resistance and pitting resistance. |
Application:
Friction type high strength bolt: suitable for steel frame
structure beam, column connection, solid web beam connection, heavy
crane beam connection of industrial workshop, brake system and
important structure under dynamic load.
High strength Bolts: shear connections in structures that allow for
a small amount of sliding or are subjected to indirect dynamic
loads.
Tensile high strength bolts: when the bolts are pulled, the fatigue
strength is low. Under dynamic load, its bearing capacity is not
more than 0.6P (P is the allowable axial force of bolts).
Therefore, it is only suitable for static loading, such as flange
butt joint, T type joint and so on.
Company Profile
Hongxu Hardware Co.,Ltd is a professional manufacturer and exporter
many kinds of fastener:Threaded rod,Bolt,Nut,Washer,Anchors
etc,with more than 15 years in this field.We are near from
Shanghai,Ningbo about 120 kms,with our high quality products and
good services,we have relations with customers all around the
world.
We are a professional and modern company dealing in standard
parts,and have a professional technical team and high-quality
supply,has a complete and scientific quality management system,
first-class service and quality for survival,as a guarantee for our
customers' vital interests.Our main products are: tooth bar,
hexagon bolt, nut, screw and other products.
Our company had“innovative concept,the pursuit of excellence,rapid
improvement,sustainable management as business philosophy,Quality
is the first work in our company,customers satisfaction is our
honor.
Our quality policy will never change,to carrenvironment the society
and the social responsibility,we are a
integrity,responsibility,innovation team,hoping we can do business
with the customers from all around the world.
