This specification covers the material and fabrication of new reusable, slotted angle metal crates intended for use as containers for domestic and overseas shipment of lightweight airframe components and lightweight bulky items for domestic or overseas air and surface shipments. This specification includes metal crates in a variety of types, classes, and styles reflecting varied performance, but does not address their performance under al atmosphere, handling, shipping, and storage conditions. Type I are open crates, while Type II are fully-enclosed or sheathed with solid material. On the other hand, Class 1 are used for outside or indeterminate storage, while Class 2 are for inside or protected storage. And finally, Style A are furnished without skids or rubbing strips, while Style B are furnished with skid blocks or skids with rubbing strips and provisions for forklift truck handling. Details regarding the manufacture and construction requirements are itemized thoroughly.

1.1 This specification covers the material and fabrication of new reusable metal (slotted angle) crates intended for use as containers for domestic and overseas shipment of lightweight airframe components and lightweight bulky items, not exceeding 3000 lb [1361 kg] for domestic or overseas air and surface shipments.

1.2 Slotted angle crate performance is dependent on its fabricated components; therefore, a variety of types, classes, and styles reflecting varied performance are specified. This specification, however, does not cover slotted angle crate performance under all atmosphere, handling, shipping, and storage conditions.

1.3 If the use of other construction methods or techniques are acceptable and permitted (see 5.1.12), the resulting packaging systems shall be of equal or better performance than would result from the use of these specified materials and procedures. The appropriate distribution cycle specified in Practice D4169 can be used to develop comparative procedures and criteria.

1.4 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. See for conversion of units.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of the standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.