Accreditation / Associations


American Association for Laboratory Accreditation (A2LA)

The American Association for Laboratory Accreditation (A2LA) is a nonprofit, non-governmental, public service, membership society. We are the only independent (meaning that we are not governed by another, “parent” organization), non-profit, internationally-recognized accreditation body in the United States that offers a full range of comprehensive laboratory and laboratory-related accreditation services and training. Services are available to any type of organization, be it private or government. All of our accreditation programs are based on internationally-accepted criteria for competence. In addition to the accreditation of laboratories, A2LA offers programs for the accreditation of inspection bodies, proficiency testing providers, reference material producers and product certification bodies.

A2LA Certificate


Southwestern Fastener Association (SFA)

Southwestern Fastener Association has dedicated over 35 years of service to their members. Today, the Association membership exceeds 140 fastener companies. The membership is comprised of distributors and distributor representatives, manufacturers and manufacturer representatives, importers, processors, technology and independent sales agents.

Southeastern Fastener Association (SEFA)

As a regional association of the Fastener Industry, we are committed to bringing value to our membership. For 35 years, the SEFA has continued to bring distributors, manufacturers, importers, platers, and manufacturerʼs representatives together to help find common ground in the industry and work together to promote education, networking, and industry events.

National Fastener Distribution Association (NFDA)

NFDA is a non-profit trade association serving the North American fastener industry. With approximately 130 members, NFDA is the industry leader among trade associations. Professionals throughout the fastener industry, both distributors and manufacturers, whose businesses range in size from small family firms to large multinational corporations, have each found that NFDA’s services and benefits provide them with opportunities that are unequalled and unavailable anywhere else.

American Measuring Tool Manufacturer Association (AMTMA)

The American Measuring Tool Manufacturers Association (AMTMA) stands for serving, supporting, and educating American precision tool manufacturers and their pursuit of competitiveness in world markets.

National Tooling and Machining Association (NTMA)

As the national representative of the precision custom manufacturing industry, the National Tooling and Machining Association exists to tell this story with a powerful voice. Backed by nearly 2,000 members, representing more than $40 billion in sales, the clout we collectively wield is considerable. We also serve as a valuable national resource for our members, helping them grow profitably.

Greenslade and Company, Inc.

Greenslade and Company, Inc.