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 Expert  722457

Expert in Fastener Engineering

Available for your Consulting and Expert Witness Needs

Ohio (OH)
Education Work History Career AccomplishmentsPublicationsConsulting Services Expert Witness Market Research

Summary of Expertise: Listed with other top experts in: 
Expert is frequently sought for fastener failure analysis cases as probably the leading expert in this field. He has handled literally hundreds of fastener failure situations and of a wide range of applications.

failure analysis


threaded fastener failure analysis


amusement ride safety

Expert actually began his fastener career as a machine operator running all the various types of fastener making machinery. He evolved to design the tooling for those machines, inspecting/testing the products, and eventually running the engineering and quality functions of fastener plants before being elevated to executive roles.

fastener manufacturing


threaded fastener manufacturing

Expert is a true expert in fastener quality. This part of his background started when he was an inspector and gage setter in a fastener plant. He went on to become a quality engineer and then ultimately having an engineering and quality staff of 27 at one of the largest fastener companies in the world. He has assessed the quality of more than 100 fastener manufacturing plants around the globe.

fastener quality

Expert has exceptional experience with hex head bolts. In fact all of the current NASCAR teams count on hex bolts he designed.

hexagonal-head bolt

Expert is one of the leading experts with high-strength bolts. He designed an entire line of high-strength bolts for the largest direct-to-user supplier of maintenance supplies. That covered 1/4" through 1 1/4" diameter products. He also has a significant background with high-strength aerospace bolts of various materials.

high-strength bolt

Expert's experience with locknuts is extensive having four United States Patents with a total of 56 claims and all four of them included locknuts. He also designed a line of locknuts to go with the high-strength bolts he designed for a very large fastener distributor. He has a newly designed locknut that is waiting for patent protection before going to market.


Almost all of Expert's work is with mechanical fasteners and the companies that make or sell them. Solving the failures of mechanical fasteners is Expert's renowned specialty.

mechanical fastener

Expert has served for many years on the fastener standards committees. That is, ASME B18 and ASTM F16. A few years back he also gained membership into ASTM E30, Forensic Sciences, so as to lend his expertise with fasteners into standards dealing with legal issues.

mechanical fastener standard

Part of determining what fastener should be used in an application is figuring out the strength of the threads. Expert does this routinely when designing fasteners or learning how a fastener broke.

screw thread strength

Expert frequently is involved with the testing of screw threads. The threads act like a spring in an application and produce the holding power. Therefore, the threads must be tested to know if the screw can do its job properly.

screw thread testing


threaded fastener testing


threaded fastener testing machine

Expert was previously the Director of Engineering of SPS Unbrako. This is the company that invented the socket head cap screw. As such, he is considered the leading technical expert on these products, and still assists the company as a consultant.

socket-head screw

Expert has done a lot of work with square nuts and bolts because he worked with the railroad industry who have been very slow in considering hex nuts and bolts. However, because of this Expert invented a fastener system for railroad tracks that use square nuts and bolts that performed better in testing trials than any fasteners they had ever used before. That system was then patented.

square nut


square-head bolt

Expert's work has been primarily with threaded fasteners. This has involved most if not all of the types of threads seen in standards. A comprehension of the combination of materials and threads and their components is needed to determine the strength that can be designed into a fastened joint. Expert excels in morphing these attributes to create a product that will function properly.

threaded fastener


threaded fastener engineering

This topic falls under what the fastener industry calls Applications Engineering. The tightening of the fastener is one important facet of that discipline. There are several ways to go about it, but the end result is to develop what is know as clampforce. That is, a pressure that is developed by tightening the bolt or nut that is greater than the service loads that the joint will receive. Expert knows exactly how to deal with each given situation.

threaded fastener tightening

This type of equipment is escentially a hydraulic load cell, whereby when a nut or bolt is tightened in the machine a developed load created is displayed typically in pounds. Expert was the co-inventor of the first digital readout tester of this type and still uses it when conducting fastener training classes and evaluating some products.

threaded fastener torque-tension test equipment

Show Secondary and Basic Areas of Expertise
Expert may consult nationally and internationally, and is also local to the following cities: Detroit, Michigan;  Warren, Michigan;  Livonia, Michigan;  Dearborn, Michigan;  Cleveland, Ohio;  Toledo, Ohio;  Akron, Ohio;  Youngstown, Ohio;  Canton, Ohio;  and Erie, Pennsylvania.

Often requested
with this expert:

Fastener Engineering, Fastener Failure Analysis, Fastener...
Threaded Fasteners Reliability
Advancing Fastening Design and Application Engineering,...
Fasteners, Latching mechanisms, structures, aircraft...

Year   Degree   Subject   Institution  
1969   NA   Mechanical Engineering   Cleveland State University  

Work History:
Years   Employer   Title   Responsibilities

2001 to


(Undisclosed Consulting Company)




He is the owner and operator.

1998 to 2001


SPS Technologies


Director of Engineering


He had overall technical responsibility for the 900,000 sq. ft. manufacturing plant with a staff of 27.

1997 to 1998


(Undisclosed Consulting Company)




He was the owner and operator.

1996 to 1997


Fastener Corporation of America


General Manager


Overall turn-around responsibility for this distributor, except for payroll.

1995 to 1996


SKN Manufacturing




Overall turn-around responsibility for this fastener manufacturer.

1981 to 1995


Bowman Distribution


Manager of Quality and Engineering


He had complete technical responsibility for this major company with a staff of 12.

1972 to 1981


Lamson & Sessions


Manager of Manufacturing Engineering


He had overall technical responsibility for this 1,000,000 sq. ft. fastener manufacturing plant with a staff of 20.

Career Accomplishments:

He belongs to the American Society for Testing and Materials; ASM International; the National Association of Amusement Ride Safety Officers; the National Association of Corrosion Engineers; and the American Society for Quality.

Professional Appointments

He has been appointed to ASTM F16 Fasteners, F24 Amusement Rides & Devices, E30 Forensic Sciences; ASME B18 Fastener Standards; and the Bolting Technology Council (ASTM F16.96).

Publications and Patents Summary

He has thirty-one publications and four US Patents granted with a total of fifty-six claims.

Consulting Services:
Recent Client Requests:
  • Expert in aerospace bolt manufacturing equipment for consulting on aerospace fastener manufacturing.
  • Expert in equipment and tooling vendors to consult on negotiating and evaluating new locknut line in the U.S..
  • Fastener expert for consulting on threaded fastener design.
  • Expert for consulting on UNJ threadform tensile stress area.
  • Expert for consulting on cold heading copper alloys.
  • Intota expert 722457 for consulting on Threaded Fastener Failure Consultation.
  • Expert for consulting on fea analysis.
  • Fastener and joint expert for consulting on Threaded Fastener and Joints for Battery Packs.
  • Expert in screw thread design for consulting on large thread design.
  • Expert screw thread design for consulting on whether two screw designs components are correct for each other.
  • Expert for consulting on Fastener failure on Manufactured Street Sweeper
  • Expert for consulting on Broken bolts
  • Expert in thread load distribution for impart axial loads.
Click the green button above to contact Expert for a free initial screening call regarding your expert consulting needs.  Expert is available for consulting to corporate, legal and government clients.  Remember, your initial screening call to speak with Expert is free.

Expert Witness:
Expert Witness Experience Summary:
He worked a few lawsuits as an expert while employed with others, but since the beginning of 2002 he has enjoyed working a large number of cases and with great success.
Recent Litigation Client Requests:
  • Expert for consulting on Coupling failure litigation.
  • Expert in fasteners & brackets to opine on why cable came loose from door frame.
  • Expert in gaskets for consulting on failure analysis of oilfield flange/gasket seal.
  • Expert in fasteners for consulting on inspection of type "B" defective threads.
Click the green button above to contact Expert for a free initial screening call regarding expert testimony, litigation consulting and support, forensic services, or any related expert witness services.  A few litigation needs include product liability, personal injury, economic loss, intellectual property (patent, trademark, trade secret, copyright), and insurance matters.  Remember, your initial screening call to speak with Expert is free.

International Experience:
Years   Country / Region   Summary
2003 to 2005   CHINA   He introduced several groups of Americans and Europeans to their counterparts in China for potential sourcing or joint ventures. Seventeen fastener plants have been reviewed so far.
2002 to 2002   CZECH REPUBLIC   He was selected to be the technical mediator in a legal dispute over the capabilities of fastener measuring accuracy using lasers.
2001 to 2001   IRELAND   He was directed to assess the facility of a sister fastener manufacturing plant to eliminate the causes of numerous field problems.
1987 to 1994   TAIWAN   He was assigned to represent his company in a joint venture with Japanese firms. The goal was to identify suitable fastener plants for importing sources. In doing so more than 100 fastener plants in Taiwan and Japan were reviewed.
1987 to 1994   JAPAN   He was assigned to represent his company in a joint venture with Japanese firms. The goal was to identify suitable fastener plants for importing sources. In doing so more than 100 fastener plants in Taiwan and Japan were reviewed.

Language Skills:
Foreign Language   Description
Japanese   He learned enough to be able to get around Japan by his self, but was not fluent. This effort gained great respect.

Market Research:
He's been involved in bringing a number of new fastener products and finishes to the market place. This includes designs of brochures, scripting promotional videos, and even acting in them.

Click the green button above to contact Expert for a free initial screening call regarding your marketing research, industry research, and company research needs.  For research needs involving multiple experts or secondary research, a Research Director can be assigned to coordinate the work into a custom report for you as a potentially quicker and more cost effective alternative to doing this work yourself or hiring a boutique consultancy.  Remember, your initial screening call to speak with Expert is free.

Additional Skills and Services:

He has conducted more than 200 fastener training seminars throughout the United States, and has recent developed a slick PowerPoint presentation called "Basic Training." It's a one-day program that covers Standards, Product Designs, Threads, Materials, Manufacturing, and Heat Treatment.

Supplier and Vendor Location and Selection

He has been to over 100 plants around the world and with the eyes of a person who spent 25 years in fastener manufacturing. He certainly has the expertise to sort out the good ones from the bad.

Other Skills and Services

His photo hobby from a teenager has developed and grown into a powerful tool when documenting failed products for lawsuits or just helping to make a point with a client. He has quite a selection of equipment at his disposal.


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