Precision thread rolling techniques employed at Rolled Threads Unlimited produces bar and rod with superior strength, finish and dimensional integrity with accurate lead tolerances. We offer the broadest size range in the industry: .0312” thru 7” diameter. All the major thread forms are rolled: Unified, UNJ, Metric, Acme, Trapezoidal, Worms, Knurls and special configurations. Carbon and alloy steel, stainless steel, nickel alloys, brass and aluminum are available in all the thread forms.
Unified threaded bar & rod is available as coarse thread ( UNC) and fine thread (UNF) series. Thread pitches from 4 TPI to 100 TPI and finer. Special lengths up to 40 Ft.
Fasteners for demanding applications are often specified with the UNJ thread form. The controlled and more generously radius root enhances the fatigue resistance of fasteners. Applications include aerospace and engine hardware.
Unified UNJ threads are offered in four different types of pitches including
The acme product is rolled in diameters from 1/8” to 7 1/2” and lengths to 40 Ft. Right and left hand acme bar is available as well as multiple leads, stub acme forms and classes 2C, 2G, 3C & 3G. Precision lead screw applications are accommodated by lead accuracy capability as close as .003/ft and straightness to .001/inch. Carbon steel, heat treated alloys, stainless steel, aluminum and nickel alloys are rolled in the acme forms.
Trapezoidal threads have a 30 degree included angle versus 29 degrees for the acme form. Rolled Threads produces trapezoidal bar in the same size ranges and material varieties as acme bar.
The thread pitch ranges from 1mm through 10mm for all RH and LH operations. The diameter ranges from 4mm through 170mm and the available classes of fit are 6e, 7e, and 8c. We follow an ISO metric profile for our trapezoidal threaded rods.
Our metric threaded fasteners are used in a wide variety of applications. Rolled Threads has tooling available to make metric sizes in all the coarse and fine thread pitches. Size capabilities range from 2mm thru 160mm diameter and 8mm to .4mm pitch. Right hand and left hand.
Rolled Threads Unlimited machines and thread rolls specialty fasteners including hex head bolts, cap screws, fully threaded studs, double end studs and nuts. With our extensive machining capabilities we can make custom fasteners to your prints. Fasteners can be made to your own specification or industry standards including:
ASTM A-193
ASTM A354
SAE J-429
ASME 818.2.1-1996
ASTMA320/320M
Fasteners provide a connective mechanism to securely hold two different materials together. The overall efficiency of a typical fastener depends on the strength and resistance provided by the threads in it. We offer fasteners of part sizes up to 7 ½” diameter. There are different forms of ...
Rolled Threads Unlimited offers custom made double ended studs in Unified, UNJ , Metric and MJ forms from 1/8” thru 7 ½” diameters . Classes of fit include 1A,2A 3A and interference. We capable of rolling studs with hardness of RC 40 and higher.
Double ends can be produced to these and many other specifications:
Hex head bolts, socket heads, 12 point flange and other specialty bolts are offered by Rolled Threads and produced to specifications that include Grades 2, 5 or 8, metric equivalents, A 490, B-7, A 325 and others. The key feature of any bolt we produce is the superior strength of the rolled thread.
The most versatile thread rolling capabilities in the industry combined with machining expertise give us the ability to make fasteners to your unique design. Quantity is not a limiting factor as we will make 1 part or 10,000 pieces. Special tooling is available in most thread forms to allow us to roll parts up to RC 43.
Rolled Threads offers a host of secondary services for standard & custom made fasteners.
Our secondary service capabilities are
Plating
Heat treating
Shot peening
Grinding
Deep-hole drilling
Metallurgical Testing
Non Destructive Testing
Bending
All vendors that perform secondary operations are in close proximity to our facility. Our qualified sources are held to the same exacting quality and performance standards we apply to our own processes. Certifications are available for all work performed
Metal plating ensures deposition of a thin/thick layer of high quality material over the metal surface to avoid distortion of the metal. Plating involves two main ...
Rolled Threads serves the linear motion, small motor and other markets with an expertise in rolling acme, trapezoidal, unified or metric threaded bar for lead screw applications. Capabilities include right and left hand, multiple leads and custom forms with lead accuracy to .003/ft and straightness to .001/inch. Stainless steel, carbon steel and heat treated alloys some of the available lead screw materials.
