標準號：BS 4933-2010
中文標準名稱：ISO公制黑色罩頭和沉頭螺拴,螺釘和六角螺母規范
英文標準名稱：Specification for ISO metric black cup and countersunk head bolts and screws with hexagon nuts
標準類型：J13
發布日期：2010/12/31 12:00:00
實施日期：2010/12/31 12:00:00
中國標準分類號：J13
國際標準分類號：21.060.10;21.060.20
適用范圍：This British Standard specifies requirements and provides general dimensions and tolerances for the following types of cup head and countersunk head bolts and screws:? cup head bolts and screws;? cup head bolts with nibs;? cup head square neck bolts;? 90° countersunk head bolts and screws;? 90° countersunk head bolts with nibs;? 90° countersunk head square neck bolts;? 120° countersunk head square neck bolts.Mechanical properties for steel bolts and screws are specified in BS EN ISO 898?1.This British Standard also specifies requirements for the nuts to be provided with bolts and screws conforming to this standard.NOTE 1 A table summarizing the key requirements of BS 4933 is included in Annex A. This table does not list every requirement in BS 4933 but is justintended as a quick reference for users.NOTE 2 It is considered that the range of nominal sizes included in this standard is adequate for most of the applications for which this series islikely to be employed, but for the convenience of users requiring larger sizes, further information is provided in Annex B.