标准摘要
[中文适用范围]： ISO 8764的本部分规定了十字槽头螺钉的手动起子头和机用钻头的形状和尺寸、技术要求和扭矩测试方法。 它规定了两种形式的起子头： ——H 型凹槽的 PH 型； ——PZ 型用于 Z 型凹槽。 ISO 4757 中规定了 H 型和 Z 型凹槽。 ISO 8764-2 中给出了手动螺丝刀的一般要求、刀片长度和标记。 [外文原描述]： ISO 8764-1:2004 specifies the shapes and dimensions, technical requirements and torque test methods for the tips of hand drivers and of machine-operated bits for cross-recessed head screws. It specifies two forms of driver tips: form PH for form H recesses and form PZ for form Z recesses. (H and Z form recesses are specified in ISO 4757, while general requirements, lengths of blades and marking of hand-operated screwdrivers are given in ISO 8764-2.)
英文名称Assembly tools for screws and nuts — Screwdrivers for cross-recessed head screws — Part 1: Driver tips