National Defense Corporation

National Defense Corporation (NDC), owned by National Presto Industries, Inc., Eau Claire Wisconsin, was restructured in 2014 to provide a consolidation point for its Defense segment companies, which are focused on our Nation’s security and defense. The five companies included under the NDC structure are AMTEC Corporation; Amron, a division of AMTEC Corporation; Tech Ord, a division of AMTEC Corporation; Spectra Technologies, LLC and Woodlawn Manufacturing. Consolidation under National Defense Corporation benefits our customers and suppliers by providing a strategic and synergistic approach for execution of our existing business and ensures we continue to provide industry leading, high quality, effective products for the security and defense of our Nation.


Prime Contractor to the U.S. Army & International Allies for 40mm Ammunition & Fuzing. Assembly of Mechanical Devices to Defense Contractors.


Produces Full Load, Assembly, & Pack Services, Ordnance Manufacturing, Warheads, Grenades, Ammunition, Demolition Products & Ordnance Design, Testing & General “Work for Others” Manufacturing Services.


World’s Leader in the Production of Medium Caliber Cartridge Cases (Brass, Aluminum, & Steel). Precision Defense Components, Including Warhead Bodies.

Tech Ord

Leading Manufacturer of Detonators, Booster Pellets, Release Cartridges, & Other Military Energetic Devices. Only Qualified Producer of Lead Azide in the United States.


Woodlawn Manufacturing is an integrated high volume, precision manufacturer of metal parts and assemblies for the defense industry.

NDC will have representatives at these upcoming events:

May 6th – 10th 2024 SOF Week, Tampa FL

October 14th – 16th 2024 AUSA Annual Meeting, Washington, DC


Eau Claire, Wisconsin (October 26, 2022) – National Presto Industries, Inc. (NYSE: NPK) announced today that its wholly owned subsidiary, National Defense Corporation, and newly formed subsidiary Woodlawn Manufacturing, LLC, acquired the equity interests of Woodlawn Manufacturing, Ltd, located in Marshall, Texas. Woodlawn Manufacturing, Ltd, is a high volume manufacturer of precision metal parts and assemblies primarily for the defense and aerospace industry. The company is a first- and second-tier supplier to the United States military, producing rocket warhead bodies, countermeasure flare cases and other ammunition metal parts. It has annual sales of approximately $18,000,000. Major customers include U.S. government agencies, AMTEC and other defense contractors.

Eau Claire, Wisconsin (September 29, 2022) – National Presto Industries, Inc. (NYSE: NPK) announced today that on September 23, 2022, the U.S. Army awarded AMTEC Corporation, its wholly-owned subsidiary, a new 40mm Grenade Ammunition Systems contract for the Government’s Fiscal Year (FY) 2022 through 2026 requirements of tactical and practice ammunition cartridges. This sole source contract is the fifth consecutive 40mm systems contract awarded to AMTEC, representing 22 consecutive Government fiscal years (FY05 – FY26). The initial award value is $69.8 million, with deliveries scheduled to commence in late 2023. The maximum ceiling value of the contract is $826.8 million. The actual annual and cumulative dollar volume over the course of this contract award will be dependent upon military requirements and funding, as well as government procurement regulations and other factors controlled by the Army and the Department of Defense.

National Presto Industries, Inc. operates in three business segments. The Housewares/Small Appliance segment designs and sells small household appliances and pressure cookers under the PRESTO(r) brand name. The segment is recognized as an innovator of new products. The Defense segment manufactures a variety of products, including medium caliber training and tactical ammunition, energetic ordnance items, fuzes, cartridge cases, and metal parts. The Safety Segment consists of three startup companies. The first is Rusoh, Inc., which designs and markets the Rusoh(r) Eliminator(r) fire extinguisher, the first owner-maintained fire extinguisher. The second is OneEvent Technologies, Inc. It offers systems that provide early warning of conditions that if not corrected, could ultimately lead to significant losses. The third is Rely Innovations, Inc., which designs and sells carbon monoxide detectors for residential use.

This release contains “forward looking statements” made pursuant to the safe harbor provision of the Private Securities Litigation Reform Act of 1995 that are subject to certain risks and uncertainties, as well as assumptions, that could cause actual results to differ materially from historical results and those presently anticipated or projected. In addition to the factors discussed

Proud to be members of the following organizations

The Munitions Industrial Base Task Force (MIBTF) is a trade association of U.S. munitions manufacturers, and currently has 16 member companies The MIBTF works to make sure there is adequate funding and policies to sustain a responsive, capable U.S. munitions industrial base to develop, produce, and support superior munitions for the U.S. and is allies.

The National Defense Industrial Association (NDIA) is America’s leading Defense Industry association promoting national security.

​The Association of the United States Army is a private, non-profit organization that acts primarily as an advocacy group for the United States Army. Founded in 1950, it has 125 chapters worldwide.

​The Department of Defense Ordnance Technology Consortium (DOTC) was commissioned by the Under Secretary of Defense for Acquisition, Technology and Logistics as a DoD initiative. The goal was to facilitate collaborative Government, Industry and Academic ordnance technology development and prototyping. Initially in 2000 the National Armaments Consortium (NAC) was partnered with the Army’s Warheads and Energetics Technology Center, or WETC, located at Picatinny Arsenal in New Jersey. Shortly after the NAC/WETC partnership was forged, the NAC expanded its role and became the industrial/academic component of the newly formed DOTC when it was stood up as a purple organization in December 2002.

Contact Information

National Defense Corporation
4230 Capital Circle Dr.
Janesville, WI 53546
(608) 752-2699


Hampton Inn
2400 Fulton St.
Janesville, WI
(608) 754-4900
Holiday Inn
3100 Wellington Pl
Janesville, WI
(608) 756-3100