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Distributor's Link Magazine Spring 2021 / Vol 44 No 2


44 THE DISTRIBUTOR’S LINK Anthony Di Maio Anthony E. Di Maio attended Wentworth Institute and Northeastern University. In 1962 he started working with Blind Fasteners as Vice-President of Engineering & Manufacturing for two blind rivet manufacturers. He has been Chairman of the Technical Committee of the Industrial Fasteners Institute (IFI) and is still involved in the writing of IFI specifications. In 1991, he started ADM Engineering and is working with Fastener Manufacturers developing new fasteners and special machinery. He can be reached at ADM Engineering, 6 Hermon Ave., Haverhill, MA 01832; phone and fax 978-521-0277; e-mail: BLIND RIVETS ARE “UNIVERSAL” FASTENERS There has been many discussions about blind rivets, many of these discussions occurred during and after my seminars that I conducted in the USA, Europe, Asia, Bahrain etc.. Many points of discussion and questions were similar in all seminar locations. I will discuss some of the questions asked. [Q] What Is A Blind Rivet Or Blind Fastener? [A] A blind rivet or blind fastener is a mechanical device which can join components parts in an assembly where access for fastener installation and activation is available from only one side. Specifically, a blind rivet is a blind fastener, having a self-contained mechanical feature which permits formation of an upset on the blind end of the rivet, and expansion of the rivet shank during rivet setting to join components parts of an assembly. A blind rivet is a mechanical fastener for installation in a prepared hole (either drilled or punched) from one side of the workpiece to fasten two or more thicknesses of material. We define a blind rivet as a two fastener in which installation is from one side only of whatever is CONTRIBUTOR ARTICLE being joined together. Installation may be accomplished by a mechanically operated tool, or in some special cases, through an impact where a pin is driven into the rivet shell causing an upset, or formation on the blind side. Some blind rivets styles involve lock spindles and other special features which go beyond the two piece configuration. Originally, blind fastening was conceived as a labor-saving concept of nonoperator control and was extensively refined during WW11 to overcome severe labor shortage. Bur a significant distinction should be made at this point, that the term “blind” associated with these fasteners is not an application limitation that they can only be used in blind applications. Really, it’s an enhancement of the product to be used in that fashion. Today they are many applications where blind side fastening is not the primary requirement. Rather, these fasteners are selected because they represent a wellcontrolled lightweight inexpensive low-installed cost saving. CONTINUED ON PAGE 120

Robert J Key owner and founder of Key Bellevilles, Inc. passed away January 27, 2021 in his home. Known by most as Bob, Key traveled the World selling and promoting Belleville springs for the last 50 years. After graduating Summa Cum Laude from Dickinson College in 1957 with a Doctor of Jurisprudence, Bob thought law would be his only profession. However, in 1967 after two gentlemen backed out of a deal, they asked Bob to facilitate, he found himself in the manufacturing business. Bob operated Ohio Spring Specialties in Ohio, before relocating to their current location, in Leechburg Pennsylvania, a few years later. Like anything he did Bob put everything into getting Key Bellevilles up and running. He would fly his Cessna 182 all over the country meeting with engineers to explain OBITUARY THE DISTRIBUTOR’S LINK 45 how Bellevilles could be a better fit for their application. All of Bob’s hard work paid off as Key Bellevilles became a more recognized name in the industry. Key Bellevilles products have been used in everything from the space station to the mechanical shark in ‘Jaws’. Key Bellevilles will continue to operate with all the same people in place and Bob’s wife, Patty, stepping into the role of President. KEY BELLEVILLES, INC. We are the largest Disc Spring Manufacturer! • Complete size range from .236” to 36” O.D. & 3” Thick • Largest Raw Material and Finished Inventory in the World • We manufacture Metric Parts to DIN Specs • Complete Line of Stainless and Inconel Parts • 10,000 Different Sizes in Stock Call toll free from anywhere in the U.S. and Canada at: Phone: 1-800-245-3600 • Fax: 1-800-847-1672 Key Bellevilles, Inc. 100 Key Lane • Leechburg, PA 15656-9531 U.S.A. Phone: 724-295-5111 • Fax: 724-295-2570 • e-mail: Visit Our Website or Call for a FREE Engineering CD


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