Since 1986, FH Machinery has been serving the fastener and forming industries with top lines of new machinery as well as good used equipment. The company has an office/warehouse just outside of Philadelphia, PA (USA) with over 30,000 square feet of space, as well as representatives in Mexico City, Mexico and Toronto, Canada, Mumbai, India to better serve the needs of its customers.
As a full-service distributor for the fastener industry, FH Machinery can also supply tooling, tool design, product development and rebuilding/remanufacturing. Through its global network of suppliers, the company has the ability to offer customers in the U.S. and around the world the very best new and used equipment available anywhere.
As a quality used equipment distributor, FH Machinery is always in the market for good used equipment, purchasing single pieces or even entire facilities.
As a quality used equipment distributor, FH Machinery is always in the market for good used equipment, purchasing single pieces or even entire facilities. Over the past decade, the company acquired a significant inventory of Fastener and Cold Forming manufacturing equipment through the purchase of complete facilities, and it has also added CNC wire forming to its product lines, to better serve customers as they diversify.
A nut is a type of fastener with a threaded hole. Nuts are almost always used opposite a mating bolt to fasten a stack of parts together. The two partners are kept together by a combination of their threads’ friction, a slight stretch of the bolt, and compression of the parts. In applications where vibration or rotation may work a nut loose, various locking mechanisms may be employed: Adhesives, safety pins or lockwire, nylon inserts, or slightly oval-shaped threads. The most common shape is hexagonal, for similar reasons as the bolt head – 6 sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off. Other specialized shapes exist for certain needs, such as wing nuts for finger adjustment and captive nuts for inaccessible areas.
Nuts are graded with strength ratings compatible with their respective bolts; for example, an ISO property class 10 nut will be able to support the bolt proof strength load of an ISO property class 10.9 bolt without stripping. Likewise, an SAE class 5 nut can support the proof load of an SAE class 5 bolt, and so on.
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