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Manufacturer of a Complete Line of Quality Roll Threaded Products

Keystone Threaded Products | The Acme Threading Specialists

Custom Roll Threaded Services

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Custom Roll Threaded Services
Custom Roll Threaded Services

Keystone Threaded Products is a leader in the fabrication of precision and custom roll threaded products. We specialize in the production of roll threaded products including, acme threaded bars, and precision acme components such as acme round nuts, acme cylinder nuts, and mounting flanges. We work with a variety of metals including various grades of carbon steel, alloy steel, heat treated metals, and stainless steel as well as bronze, aluminum brass, titanium, alloys and exotics. One of our specialties is ASTM A193 Grade B7, trademarked Keyalloy.

We manufacture hardware with unified, UNJ, metric, worm stock, acme, stub acme, trapezoidal, and multi-lead threads in stock lengths of 3', 6', and 12' with diameters up to 15" and weighing up to 8,000 lb. Custom lengths up to 40' can be fabricated. Our custom machining service offers secondary machining, cut to length parts, shearing up to 1.25", saw cutting, end machining, cut threads, and internal threading. Available options include CNC turning, drilling, grinding, honing, milling, straightening, tapping, helical and annular grooves, serrations and knurling. We are able to offer heat treating and plating services by aligning with qualified external suppliers.

For more information on our custom roll threading fabrication services, please see the table below or contact us directly.

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Custom & Precision Threaded Product Capabilities

Product Name
Custom Threaded Products
Roll Threaded Bars
Acme Threaded Bars
Precision Acme Components
Acme Round Nuts
Acme Cylinder Nuts
Mounting Flanges
Materials
Carbon Steel (1018, 1045, 1215,
1141)
Alloy Steel (4140, 4142)
Heat Treat (ASTM A193 /ASME
SA193 Grade B7)
Stainless Steel (304, 316, 17-4)
Bronze
Aluminum*
Brass*
Titanium*
Exotic Metals*

* May require minimum purchase quantity
Threads
Unified
UNJ
Metric
Worm Stock
Acme
Stub Acme
Trapezoidal
Multi-Lead
Options
CNC Turning
Drilling
Grinding
Honing
Milling
Straightening
Tapping
Knurling
Serrations
Helical and Annular Grooves
Outside sources: Heat Treating and Plating
Plating: Trivalent and Hexavalent Zinc, Black Oxide, Xylan
Diameter Up to 15 in
Stock Length 3 ft
6 ft
12 ft
Custom Length Up to 40 ft
Weight Up to 8,000 lb
Testing
Optical Comparator (Thread Leads)
Thread Ring Gauges
Height Gauges
Plug Gauges
Granite Blocks
Micrometers
Rockwell Testers
Profilometers
Inspection In-Coming
In-Process
Final Inspection
Quality
Inventory Lot Control
Dimensional Certification
Traceability
Certified Material Test Reports
Heat Analysis and Testing Certification
MIL-Q-9858A
MIL-I-45208A Inspection requirements
MIL-C-45662 Calibration system requirements
Statistical Process Control (S.P.C.)
Additional Services
Secondary Machining
Cut to Length Parts
Shearing (up to 1.25 in)
Saw Cutting
End Machining
Cut Threads
Internal Threading
Production Volume Prototype to Medium Volume

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