EN ISO 7380-1:2023由欧洲标准化委员会 IX-CEN 发布于 2023-01-11,并于 2023-04-30 实施,于 2023-07-31 废止。
EN ISO 7380-1:2023在国际标准分类中归属于: 21.060.10 螺栓、螺钉、螺柱。
This document specifies the characteristics of hexagon socket button head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M3 to M16, and with product grade A. If, in certain cases, other specifications are requested, stainless steel grades can be selected from ISO 3506-1, and the dimensional options from ISO 888 or ISO 4753. NOTE The reduced loadability (related to the head dimensions in combination with penetration of the hexagon socket specified in this document) implies a limitation of ultimate tensile load shown by a specific marking (property class preceded by a zero). The loadability in the head is assumed to be 80 % of that in the thread for all sizes and all property classes, see Table 4.
③ 螺钉a) 机器螺钉:因头型和槽形不同而分成许多品种。头型有圆柱头、盘头、沉头和半沉头几种,头部槽形一般为开槽(一字槽)、十字槽和内六角槽三种。十字槽螺钉施拧时对中性好,头部强度比一字槽的大,不易拧秃,一般多用于大批量生产中。内六角螺钉、内六角花形螺钉可施加较大的拧紧力矩,连接强度大,头部能埋入机体内,用于要求结构紧凑、外形平滑的连接处。...
螺丝刀(也叫“改锥”、起子)可以细分为:十字、一字、梅花、内六角和异形螺丝刀。图例、螺丝刀批头类型十字和一字螺丝刀常见。根据批头型号、批杆长度、批杆直径和螺丝刀总长度等参数可以判断螺丝刀大小。十字螺丝刀批头型号为#0、#1、#2、#3等,数字越大批头越大。我们一般常用#0~#2。一字螺丝刀批头型号为3.0、5.0、6.0、8.0等,数字越大批头越大越厚。我们一般常用3.0~6.0。...
以月旭科技Wisys5000高效液相色谱仪为例,简要介绍如下:泵头结构示意图(不带自动清洗款)序号名称序号名称1泵头主体13锥心定位锁紧头(刃环)2柱塞杆密封圈14紧固螺钉3柱塞杆导向套,带冲洗管15输出阀套(加压端)4副密封圈16连接到减震活塞的细管5定心盘17内六角螺钉M4*456压簧18放空阀主体7陶瓷柱塞杆19放空阀旋钮8导向套筒20放空阀密封圈9安装版21连接泵头与放空阀的细管10内六角螺钉...
Copyright ©2007-2022 ANTPEDIA, All Rights Reserved
京ICP备07018254号 京公网安备1101085018 电信与信息服务业务经营许可证:京ICP证110310号