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Classification of Bolts
1.Sort by head shape： （1）Hexagonal head bolt: This is the most common type of bolt. Its head is hexagonal, and it can be easily tightened or loosened with a hex wrench. Widely used in various industries such as mechanical manufacturing, automotive, and construction, such as the connection of a...Read more -
The difference between galvanizing, cadmium plating, chrome plating, and nickel plating
Galvanizing Characteristics: Zinc is relatively stable in dry air and is not easily discolored. In water and humid environments, it reacts with oxygen or carbon dioxide to form oxide or alkaline zinc carbonate films, which can prevent zinc from continuing to oxidize and provide protection. Zin...Read more -
12 basic heat treatment processes and their role
I. Annealing Method of operation: After heating the steel piece to a temperature of Ac3+30~50 degrees or Ac1+30~50 degrees or below Ac1 (you can consult the relevant information), it is generally cooled slowly with the furnace temperature. Purpose: Reduce hardness, increase plastic...Read more -
Marking of flat washers
Marking of flat washers “Do flat washers need to be marked?” “No?” “Do they need it?” …… Today we discuss this issue with you, may be a lot of people in the industry will think “Xiaowan ah, you are a little unprofessional ……”. As we all know, flat wash...Read more -
Haosheng Fasteners participated in the 136th Canton Fair
The 136th Canton Fair opened on October 15, 2024 in Guangzhou. This year’s Canton Fair, with the theme of “serving high-quality development and promoting high-level opening up”, will beeld in three phases in Guangzhou, focusing on the topics of “advanced manufacturing”, “quality home” and ...Read more -
Summary of commonly used metal materials
Steel:refers to the carbon content of 0.02% to 2.11% between the iron and carbon alloys collectively, because of its low price, reliable performance, is the most widely used, the largest amount of metal materials. Non-standard mechanical design of the most widely used steel are: Q235, 45 # steel,...Read more -
Handan Haosheng Fasteners Shines at the Krakow Fastener Exhibition in Poland
Krakow, Poland, September 25, 2024 — At the Krakow Fastener Exhibition, which opened today, Handan Haosheng Fasteners Co., Ltd. from China attracted the attention of numerous international buyers and industry experts with its outstanding product quality and innovative technology. As one of the la...Read more -
Screw surface treatment process
Screws commonly used surface treatment processes are oxidation, electrophoresis, electroplating, Dacromet four categories, the following is mainly to screw the colour of the surface treatment of the classification summary. Black oxide： Divided into room temperature blackening and high ...Read more -
Fastener classification method
In order to use the management and description of the convenience, need to adopt a certain method of its classification. The standard parts are summarized in several commonly used fastener classification methods: 1. Classification according to the field of us According to the different areas o...Read more -
Hexagon head bolts: difference between coarse and fine threads
Hexagon head bolts: difference between coarse and fine threads Ordinary external threads have coarse and fine threads, the same nominal diameter can have a variety of pitches, of which the thread with the largest pitch is known as coarse threads, the rest are fine threads. For example, M16x2 is ...Read more -
Teach you to recognize the grade material of bolts at a glance
Bolt is a common mechanical parts, often used in many places, it is by the head and screw two parts of a group of fasteners, need to be used in conjunction with the nut, mainly used to fasten the connection of two parts with through holes. Perhaps you do not have any understandings of the grade m...Read more -
ASTM A490 vs. ASTM A325 Bolts
Both ASTM A490 and ASTM A325 Bolts are heavy hex structural bolts. Do you know the difference between ASTM A490 and ASTM A325? Today, let’s talk about it. The simple answer is that ASTM A490 heavy-duty hexagonal bolts have higher strength requirements than A325 heavy-duty hexagonal bolts. A325 bo...Read more
