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Product Information

 

A high strength flat washer is a crucial component in any industrial fastening system. It provides a strong, reliable, and durable hold that is essential for any application that requires a secure and stable connection. With the right selection of material and size, high strength washers can withstand even the harshest environments and provide long-lasting performance.

A high strength flat washer is an essential component for any industrial application that requires a strong and reliable fastening mechanism. Flat washers are an important part of any fastening system, as they distribute the load evenly across the surface and prevent damage to the surface being fastened. High strength flat washers are made from various materials such as steel, stainless steel, and titanium, among others, to suit different industrial applications.
The main advantage of a high strength flat washer is that it provides a strong and reliable hold. A high strength washer is designed not only to distribute the load evenly but also to resist the forces that would cause it to deform or break down. As the washer is tightened, it helps to ensure that the bolt or screw remains securely in place, providing a solid and dependable fastening system.
Another advantage of a high strength flat washer is its resistance to corrosion and wear. Depending on the material, a high strength flat washer can be designed to withstand harsh environments, varying temperatures, and chemical exposure. For example, stainless steel washers are widely used in the marine and food industries due to their excellent corrosion resistance. Similarly, titanium washers are used in aerospace and medical applications, as they are lightweight and biocompatible.
When selecting a high strength flat washer, it is important to consider the application and the requirements of the fastening system. Factors such as load, temperature, and chemical exposure need to be taken into account when selecting the appropriate material and thickness of the washer. Additionally, the size and shape of the washer should be considered to ensure a proper fit and function within the system.

Flat Washer Dimensions

Flat Washer Dimensions

Table W1
S.A.E. DIMENSIONS FOR HARDENED FLAT WASHERS

Bolts SizeA
O.D.
B
I.D.
C
Thickness
MinMax
1/4″5/89/320.0510.080
5/16″11/1611/320.0510.080
3/8″13/1613/320.0510.080
7/16″59/6415/320.0510.080
1/2″1-1/1617.320.0970.177
5/8″1-5/1611/160.1220.177
3/4″1-15/3213/160.1220.177
7/8″1-3/415/160.1360.177
1″21-1/80.1360.177
1-1/8″2-1/41-1/40.1360.177
1-1/4″2-1/21-3/80.1360.177
1-3/8″2-3/41-1/20.1360.177
1-1/2″31-5/80.1360.177
1-3/4″3-3/81-7/80.1780.28
2″3-3/42-1/80.1780.28
2-1/4″42-3/80.240.34
2-1/2″4-1/22-5/80.240.34
2-3/4″52-7/80.240.34
3″5-1/23-1/80.240.34
3-1/4″63-3/80.240.34
3-1/2″6-1/23-5/80.240.34
3-3/4″73-7/80.240.34
4″7-1/24-1/80.240.34

 

Table W2
USS DIMENSIONS FOR HARDENED FLAT WASHERS

Bolts SizeA
O.D.
B
I.D.
C
Thickness
MinMax
1/4″3/45/160.0510.080
5/16″7/83/80.0640.104
3/8″17/160.0640.104
7/16″1-1/41/20.0640.104
1/2″1-3/89/160.0860.132
9/16″1-1/25/80.0860.132
5/8″1-3/411/160.1080.160
3/4″213/160.1220.177
7/8″2-1/415/160.1360.192
1″2-1/21-1/160.1360.192
1-1/8″2-3/41-1/40.1360.192
1-1/4″31-3/80.1360.192
1-3/8″3-1/41-1/20.1530.213
1-1/2″3-1/21-5/80.1530.213

 

Table W3
S.A.E. DIMENSIONS FOR LOW CARBON FLAT WASHERS

Bolts SizeA
O.D.
B
I.D.
C
Thickness
1/8″3/85/323/64
5/32″7/163/163/64
3/16″1/27/323/64
7/32″9/161/43/64
1/4″5/89/321/16
5/16″11/1611/321/16
3/8″13/1613/321/16
7/16″59/6415/321/16
1/2″1-1/1617/323/32
9/16″1-3/1619/323/32
5/8″1-5/1621/323/32
3/4″1-1/213/169/64
7/8″1-3/415/169/64
1″21-1/169/64
1-1/8″2-1/41-1/49/64
1-1/4″2-1/21-3/85/32
1-3/8″2-3/41-1/25/32
1-1/2″31-5/85/32

 

Table W4
USS DIMENSIONS FOR LOW CARBON FLAT WASHERS

Bolts SizeA
O.D.
B
I.D.
C
Thickness
3/16″9/161/43/64
1/4″3/45/161/16
5/16″7/83/85/64
3/8″17/165/64
7/16″1-1/41/25/64
1/2″1-3/89/167/64
9/16″1-1/25/87/64
5/8″1-3/411/169/64
3/4″213/165/32
7/8″2-1/415/1611/64
1″2-1/21-1/1611/64
1-1/8″2-3/41-1/411/64
1-1/4″31-3/811/64
1-3/8″3-1/41-1/23/16
1-1/2″3-1/21-5/83/16
1-5/8″3-3/41-3/43/16
1-3/4″41-7/83/16
1-7/8″4-1/423/16
2″4-1/22-1/83/16
2-1/4″4-3/42-3/87/32
2-1/2″52-5/815/64
2-3/4″5-1/42-7/81/4
3″5-1/23-1/817/64

Common Fastener Materials

 

Fasteners are fabricated from a variety of materials. These options include metals and polymers. Stainless steel offers strength and corrosion resistance. While polymer options have less strength than stainless, they are a good choice for resisting chemicals. The most common materials are:

  • Stainless steel
  • Alloy steel
  • Low carbon steel
  • Medium carbon steel
  • Titanium
  • Polymers, such as nylon
Star Washer DIN6798A M6 65Mn Bright Znic/Clear Zinc/Blue White Zinc
MYWAY Metal Washer

Finish Options

 

The use of heat treatments and application of various finishes, also known as “plating,” affects the look and performance of fasteners. Finishes provide material stability and protect the fasteners from corrosion and rust. Below are some common heat treatment and finish benefits:

  • Zinc coating – Most common, low cost, resists corrosion and rust
  • Galvanized – Superior corrosion protection, anti-seize, higher upfront investment
  • Stainless – Great for humid environments, strong, ideal for electrical or mechanical uses
  • Black – Adds color, provides better grip, deflects light

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