How to Match Nuts and Washers to Different Types of Bolt Grades?
Monica Song
Table of Contents
Introduction
Nuts, bolts, and washers are essential parts that hold many machines and structures together. Making sure these parts fit well and are very important for keeping things safe and working right. But sometimes, the importance of correctly matching these components according to their grade and specifications is often overlooked. This guide offers an in-depth examination of why matching is import, the potential risks of mismatches, and how to match nuts and washers with bolt grades
What Kind of Nuts and Washers Used for Different Types of Bolts?
The following are five different categories of bolts, and the recommended nuts and washers for different grades of bolts.
Hex bolt, hex cap screw, carriage bolt, hex flange bolt, squre bolt, plow bolt, U bolts, splice bolt, T bolt, socket cap screw, timber bolt,etc.:
Bolt grade
The grade of recomment nut
The grade of recommend washer
SAE J429 Gr.2
SAE J995 Gr.2
N/A
SAE J429 Gr.5
SAE J995 Gr.5
N/A
SAE J429 Gr.8
SAE J995 Gr.8
N/A
ASTM A307 Gr.A
ASTM A563 Gr.A
N/A
ASTM A307 Gr.B
ASTM A563 Gr.A
N/A
Thread rods and headed bolt:
Bolt grade
The grade of recomment nut
The grade of recommend washer
ASTM A193 B7
ASTM A194 Gr.2H
F436
ASTM A193 B8 class1
A194 Gr. 8
SS304
ASTM A193 B8M class1
A194 Gr. 8M
SS316
ASTM A193 B8 class 2
A194 Gr. 8
SS304
ASTM A193 B8M class 2
A194 Gr. 8M
SS316
Steel transmission tower bolt:
Bolt grade
The grade of recomment nut
The grade of recommend washer
ASTM A394 Type 0
ASTM A563 Gr.A
F436
ASTM A394 Type 1
ASTM A563 Gr.DH
F436
ASTM A394 Type 3
ASTM A563 Gr.DH3
F436
Anchor bolt:
Bolt grade
The grade of recomment nut
The grade of recommend washer
ASTM F1554 Grade 36
ASTM A563 Gr.A
F436
ASTM F1554 Grade 55
ASTM A563 Gr.A
F436
ASTM F1554 Grade 105
ASTM A563 Gr.DH
F436
Heavy hex structural bolts:
Bolt grade
The grade of recomment nut
The grade of recommend washer
ASTM A325
ASTM A563 Gr.DH
F436
ASTM A490
ASTM A563 Gr.DH
F436
The Advantages of Right Matching
Preventing Failure: The right combination of bolt, nut, and washer ensures that the assembly can withstand the operational stresses it will face, reducing the risk of failure.
Corrosion Resistance: Different materials and grades offer varying levels of corrosion resistance. Matching materials correctly can prevent galvanic corrosion and extend the lifespan of the assembly.
Maintaining Tension: A correctly matched assembly will maintain the required tension and preload, ensuring the joint’s stability under load.
The Risks of False Matching
False matching may cause the following problems:
Joint Failure: An improper match can result in inadequate preload, leading to loosening and eventual joint failure.
Corrosion: Using incompatible materials can accelerate corrosion, compromising the structural integrity of the assembly.
Increased Wear: Incorrectly matched components can increase friction and wear, leading to premature failure.
What to Consider When Choosing the Right Nuts and Washers:
Bolt Grade: The strength of a bolt determines the grade of nuts and washers required to match its load-bearing capacity.
Size: Make sure the nut and washer are sized appropriately for the bolt diameter and length to evenly distribute the load.
Environmental conditions: Consider the environment in which the component will be used. For harsh conditions, materials with higher corrosion resistance should be selected.
Application requirements: Consider the loads, vibrations and temperatures the component will be subjected to and select components that can withstand these conditions.
How to Match Nuts and Washers with Bolt Grades？
For different bolt grades, it is recommended to use nuts and washers that match the strength and application of the bolt. Here’s a quick guide:
Bolt types
Bolt grade
The grade of recomment nut
The grade of recommend washer
hex bolt, hex cap screw, carriage bolt, hex flange bolt, squre bolt, plow bolt, U bolts, splice bolt, T bolt, socket cap screw, timber bolt,etc.
Hey, I’m the author of this post, In the past 15 years, we have build long term cooperation relationship with many customers from North America, Europe, South America, Asia, Africa. If you have any problems with it, call us for a free, no-obligation quote or discuss your solution.
As the global demand for brass parts continues to rise, businesses and manufacturers around the world seek reliable, high-quality suppliers. If you’re in need of brass components for your project,
As a professional in the fastener and machining industry, I often get asked about the best machining parts manufacturers in China. Having worked in the industry for over 15 years,
Finding a trustworthy anchor bolt manufacturer is critical for industries such as construction, mechanical equipment, and infrastructure. With over 15 years of experience in the fastener industry, I’ve helped many
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How to Match Nuts and Washers to Different Types of Bolt Grades?
Table of Contents
Introduction
Nuts, bolts, and washers are essential parts that hold many machines and structures together. Making sure these parts fit well and are very important for keeping things safe and working right. But sometimes, the importance of correctly matching these components according to their grade and specifications is often overlooked. This guide offers an in-depth examination of why matching is import, the potential risks of mismatches, and how to match nuts and washers with bolt grades
What Kind of Nuts and Washers Used for Different Types of Bolts?
The following are five different categories of bolts, and the recommended nuts and washers for different grades of bolts.
Hex bolt, hex cap screw, carriage bolt, hex flange bolt, squre bolt, plow bolt, U bolts, splice bolt, T bolt, socket cap screw, timber bolt,etc.:
The Advantages of Right Matching
The Risks of False Matching
False matching may cause the following problems:
What to Consider When Choosing the Right Nuts and Washers:
How to Match Nuts and Washers with Bolt Grades？
For different bolt grades, it is recommended to use nuts and washers that match the strength and application of the bolt. Here’s a quick guide:
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Read More »Monica Song
Fastener Specialists
Hey, I’m the author of this post,
In the past 15 years, we have build long term cooperation relationship with many customers from North America, Europe, South America, Asia, Africa.
If you have any problems with it,
call us for a free, no-obligation quote
or discuss your solution.
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