What is the specification for Snaplock couplings?
Cam and groove couplings have traditionally been manufactured to the US Military specification MIL-C-27487. This specification covered the dimensions and machining tolerances, the materials, the closing torque, part numbers, pressure ratings, finish, inspection procedures and packing requirements of the product. Compliance to this specification ensured inter-changeability of parts from different manufacturers. Only parts manufactured for Defence Ministry applications normally complied in full with MIL-C-27487 in respect of stamping of part numbers, inspection, packaging and anodising. Such products were ordered using the specific MS part numbers within MIL-C-27487. Parts supplied for commercial applications normally only complied with the material, dimensional and pressure parameters of the specification. It should also be noted that only some of the sizes and materials offered were covered by MIL-C-27487. In recent years, many generic products have been produced which only loosely com
