Knurled Couplings

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 couplings are devices that connect two separate shafts or pipes.  Knurled couplings have a series of ridges or grooves on the edges which differentiates them from other couplings. These patterned knurl designs offer a better grip to the coupling. Typically, these couplings are preferred in applications where there is a chance of slippage due to grease, oil, or other substances. Our advanced manufacturing capabilities and vast industry experience enable us to manufacture a wide array of couplings to customers across various industries.

Norwood Screw Machine Parts Knurled Coupling Specifications

We can provide knurled couplings in the following specifications:

  • Coupling Materials: Brass, Stainless Steel, Steel, Carbon Steel, Alloy Steel, Aluminum and Plastics.
  • Thread Type: UNC, UNF, ACME, Machine
  • Tolerances: +/-.001ʺ
  • Diameter:  010 ʺ to 3ʺ
  • Length: 010 ʺ to 24ʺ
  • Surface Finish: Up to a 16 micro

Industries Using Knurled Couplings

We regularly deliver knurled couplings to customers in the following industries:

  1. Oil and Gas
  2. Energy
  3. Metal Manufacturing
  4. Mineral Processing
  5. Military
  6. Transportation

Norwood Screw Machine Parts has vast experience in manufacturing different types of couplings.  If you are unable to decide the type of coupling for your application, we will guide you in selecting the right one.  For more information about our knurled couplings and other products, please call us on our toll-free number 1-800-437-6644 or email us 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.