A client in the water sprinkler industry needed a company with the expertise to re-engineer and convert their adjusting screw fabrication process from screw machined to cold headed. With over 45 years manufacturing precision parts for customers in various industries, C&L was up to the challenge. We consulted with their engineers to design the part from the ground up for form, fit, and function. We designed the tooling, and handled 90% of the tooling fabrication in house. This is a flat head screw, designed for use with a Phillips head screwdriver. 

The part was fabricated primarily using our 2 die 3 blow cold header, manipulating 0.1395″ diameter, 302 stainless steel round wire into the specified finished dimensions of 0.805″ long with a 0.0164″ diameter shank. Tightest tolerance of ± 0.007″ was held throughout. Additional thread rolling was also performed, followed by  cleaning and prep for packaging. The customer requested specialized packaging of 26 lb. bags, which we readily accommodated.

As with all of the products fabricated in our ISO 9000:2008 certified facility, this adjusting screw was constructed in compliance of a number of industry standards, including ANSI B18.6.3 1998 requirements for flat head screws. This screw was tested for accuracy and functionality, with dimensional testing and visual testing carried out as well as analyzing all critical dimensions with SPC software., We currently ship 5 – 10 million units annually across the USA, with turnaround times of 10 – 12 weeks. For more details about this screw machining process or to discover more about converting your machined part to the cost effective process of cold heading, please see the table below or contact us directly.

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Cold Heading of a Stainless Steel Adjusting Screw Project Highlights

Product Description

This screw is used for adjusting a sprinkler system.

Capabilities Applied/ Processes


  • Part Design – Form, Fit, and Functionality
  • Tooling Design
  • Tooling Fabrication (90% in house)

Cold Heading

Thread Rolling

Equipment Used to Manufacture Part

2 Die 3 Blow Cold Header
Secondary Thread Rolling

Overall Part Dimensions

Shank: Ø 0.164″ ± 0.001″
Length: 0.805″ ± 0.010

Tightest Tolerances

± 0.007″

Material Used

302 Stainless Steel
Thickness: Ø 0.1395″ round wire

Additional Facts

Packaged in 26 lb. bags
Head Style: Flat Head
Screw Driver Type: Phillips Head

In process testing/ inspection performed

Dimensional Inspection, Visual Inspection
Statistical Process Control (SPC) All Critical Dimensions

Industry for Use

Water Sprinkler Industry


5 – 10 million per year
10,000 pieces per year

Delivery/ Turnaround Time

10 – 12 weeks First Release

Delivery Location


Standards Met

Customer Specifications
ANSI B18.6.3 1998

Product Name

Adjusting Screw

Why did you choose this project to show case?

To work with customer’s engineer from ground up for form fit function to save cost over screw machined product.