Plymouth Spring Company, Inc. was approached by a customer from the lawn care industry to pin roll 2 to 4 million stainless steel shafts per year. We started by pin rolling the 1.150″ long shafts which had an outside diameter of .002″. Then we tumble polished and heat treated the 302 stainless steel shafts to a Rockwell hardness of 52. Throughout the entire process, we held tight overall tolerances of ±.005″ and a straightness tolerance of .002″.The shafts were dimensionally inspected and then shipped to the clients Riviera Beach, Florida location.


To learn more about this pin rolling project, see the details below. For more information about our other services, please contact Plymouth Spring.

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Project Highlights of Precision Pin Rolling

Product Description

These Stainless Steel Precision Pin Shafts Are Used Within a Sprinkler Head.

Capabilities Applied/Processes


  • Pin Rolling
    • Manufacture Pin w/ .005" Radii


  • Tumble Polishing
  • Heat Treatment
    • Full Hard to 52 Rc

Overall Stainless Steel Shaft Dimensions

Length: 1.150"
O.D.: .0625"

Tightest Tolerances

Straightness of .002"

Material Used

302 Stainless Steel

Surface Finish

16 Micro Inch or Less

Testing / Inspection

Dimensional Inspection

Industry for Use

Lawn Care


2,000,000-4,000,000 Per Year

Turn Around Time

2-3 Weeks

Delivery Location

Riviera Beach, Florida

Standards Met

Customer Supplied Print

Product Name

Stainless Steel Shaft

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