Clampco Products is one of the few manufacturing companies in the clamp industry to qualify as a U.S. Government vendor. Clampco has been supplying the U.S. Government directly and through qualified distributors since 1982 and is listed on the Qualified Parts List (QPL) for MS21920 Clamps. Because we maintain outstanding quality standards in the design and manufacture of all of our products, we easily adhere to the rigorous demands of U.S. Government product specifications and procurement regulations. In addition to supplying MS21920 Clamps and hundreds of other NSN (National Stock Number) clamps, Clampco also designs and manufactures custom clamps using high-temperature, aerospace grade materials, and can supply special painting and packaging. Contact us to learn more about our military clamp manufacturing capabilities.