Keylock Stud. **Acme has Keylocking Studs produced to the following standards: MS51833 and MS51834. Acme product is dual certified to specific mil-spec certifications. For questions regarding certifications, please contact our customer service team at 800-323-1232.**
Product certifications may be available for this product. Please email customerservice@biscoind.com to inquire about available certifications.