Knurled Nuts

Product Specification
Length .010 to 24ʺ
Diameter .010 to 3ʺ
Thread Type UNC, UNF, Acme, Machine
Material Brass, Stainless Steel, Carbon Steel, Alloy Steel, Aluminum
Machine Surface Finish Up to a 16 micro
Tolerances +/-.001ʺ

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Product Description

Knurled Nuts, also known as thumb nuts, are easily distinguishable due to their knurled outer surface. These nuts can be tightened by hand or secured within a substrate.  These nuts can be easily turned by gripping the knurled edge between a forefinger and a thumb. Generally, knurled nuts are used in lightweight applications, where tight fastening is not required. Norwood Screw Machine Parts provides thumb nuts in standard and custom sizes. We provide the shortest turnaround times in the industry. 

Knurled Nuts Specifications

We can provide knurled nuts in the following specifications                                               

Features Specifications
Head Types Round Knurled Nuts
Materials Brass, Steel, Stainless Steel,  Carbon Steel, Alloy Steel, Aircraft Aluminum, Aluminum, Plastics
Diameter .010″ to 3″
Tolerances +/- .001
Thread Size ½” – 13″
Thread Types UNC, UNF, ACME, Machine

Industrial Applications Using Norwood’s Knurled Nuts

The following are a few applications which make the best use of thumb nuts:

  1. Electrical Components
  2. Appliances
  3. Musical Instruments
  4. Cabinet Knobs
  5. Commercial & Industrial Applications

Our commitment to quality and precision has made us one of the top custom screw machine parts manufacturers in the world. Our experts have in-depth industry knowledge which help us meet your specific requirements. To know more about custom thumb nuts, their benefits in your application, or other industrial fasteners, please call us on our toll-free number 1-800-437-6644. You can also email us your inquiries and requirements at

Industries Served

About Norwood Screw Machine

Norwood is a privately owned custom screw machine parts manufacturer. For over 59 years we serve some of the largest corporations to the small company with a new product to develop. Whether a unique item with a one time requirement or a long running contract order with scheduled deliveries, Norwood Screw Machine Parts is the right choice for the job.



Quality Control

We know that we are - and should be - judged by how quickly, accurately and cost-effectively we meet our customer's needs. Our in-house quality assurance team begins the process with the receipt of an order. They maintain close communications with customers to ensure that customer goals are clearly understood and completely achieved.