MIL-S-21041C, MILITARY SPECIFICATION: SLOTTED METAL FRAMING, ANGLES AND PANELS (16-JAN-1975)

MIL-S-21041C, MILITARY SPECIFICATION: SLOTTED METAL FRAMING, ANGLES AND PANELS (16-JAN-1975)., This specification covers slotted metal angle, metal shelving panels, nuts and bolts for assembly. Material described herein is intended for the construction and erection of frame type units of warehouse shelving, racks, stands, etc. It is also intended for the framework of small buildings, sheds, walkways, and crating. When the material is intended for outdoor use, a class 3 finish shall be required.