This Standard sets out design, construction, and performance requirements necessary for the safe operation of powder-actuated hand-held fastening tools. NOTES: 1 Requirements for the fasteners and charges for use in PA tools are given in AS/NZS 1873.3 and AS/NZS 1873.4. 2 The significant aspects essential to the safe and efficient selection, operation, and maintenance of powder-actuated fastening tools are given in AS/NZS 1873.1.