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Product Information

 

Nord Lock Washer – The Ultimate Solution for Secure Bolting
If you have ever worked with traditional washers, you know that keeping bolts tightened is a continual, frustrating process. That’s where Nord Lock Washer comes in.
Nord Lock Washer is a revolutionary solution for bolted joints that need to withstand heavy loads, high vibration, or extreme conditions. Unlike traditional washers that easily loosen and cause the joints to fail, Nord Lock Washers use their unique wedge-locking system to keep bolts securely tightened under any circumstances.

 

How Does It Work?
Nord Lock Washer consists of two washers with interlocking teeth that engage when compressed. These washers create tension by creating an inclined plane on their surfaces and using the same angle of inclination on both sides, they lock the nut and bolt into place. This ensures that the joint won’t loosen, even when subjected to vibration, shock, or extreme temperature changes.


Features and Benefits
Nord Lock Washers have many features and benefits that make them the best solution for secure bolting. Here are some of the reasons why they stand apart from other traditional washers:
1. Secures joints under extreme conditions
Nord Lock Washers are designed to perform effectively in the most critical applications, such as heavy-duty machinery, construction projects, and oil and gas industry. They are perfect for use in areas where the joints are subjected to high vibration, extreme temperature changes, and heavy loads.
2. Simple and easy to install
Unlike other locking mechanisms that are complex and time-consuming to install, Nord Lock Washers are easy to install by hand and do not require any specialized tools.
3. Maintenance-free
Once Nord Lock Washers are installed, they require no maintenance, and they will continue to perform their function without additional adjustments. This means they will save time and money in the long run.
4. Suitable for all types of bolts
Nord Lock Washers can be used with all types of bolts and nuts and are available in different sizes and materials to fit any application.


Conclusion
Nord Lock Washer is a game-changer in the bolting industry, offering reliable, secure, and maintenance-free joint solutions. It has proven effective in critical applications across the globe and is backed by a reputable brand that stands behind the quality of its product. Opting for Nord Lock Washers can provide peace of mind and ensure years of secure bolted joint performance.

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
Nord Lock Washer DIN 25201 SS316 M10 Plain
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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