Screw Machining of a Steel Coupler Valve for the Commercial Industry
(Click on thumbnail to enlarge)

At S & H Glenco Manufacturing, LLC, we are established experts in screw machining. An advanced, high-precision method, screw machining has been our specialty since 1957. Our expertise has enabled customers nationwide to obtain critical, complexly designed parts built to high levels of precision.

We recently assisted a customer in the machining of a 1/4″ coupler valve from 1215 steel. The design of the valve called for tight tolerances as well as a corrosion-resistant coating. The completed valve design measured 0.415″ long and 0.380″ in diameter.

We employed our standard screw machining method to fabricate the valve. Tolerances of +0.003″ / -0.001″ were achieved during the production process, which included inspection and testing steps to guarantee dimensional accuracy. After machining, a yellow chromate coating was applied to protect the valve from corrosion. This specific type of coating would allow for protection without disturbing the tolerance values established in machining.

We presently manufacture 3,000,000 of these valves annually for this customer, delivering monthly. Few manufacturers are able to deliver this level of cutting-edge precision while still achieving volume output. For more information about our capabilities and services, see the table below and feel free to contact us directly.

Request for information or quote


Project Name & Description

1/4″ Coupler Valve

Capabilities Applied/Processes
Screw Machining
Yellow Chromate Coating
Overall Part Dimensions

0.415″ Length x Ø 0.380″

Tightest Tolerances

+0.003″ / -0.001″

Material Used

1215 Steel

Material Finish

Yellow Chromate Coat

Industry for Use


In Process Testing/Inspection Performed

Visual Inspection, Dimensional Inspection


3,000,000 Annually

Delivery/Turnaround Time

Monthly Releases

Delivery Location


Standards Met

Customer Specifications, CAD Drawings