BS 7795:1995
预加微囊包封化学粘合件内装螺纹的螺栓、螺钉和螺柱规范

Specification for bolts, screws and studs with a pre-applied micro-encapsulated chemical adhesive feature incorporated into the thread

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标准号

BS 7795:1995

发布

1995年

发布单位

英国标准学会

当前最新

BS 7795:1995

 

 

被代替标准

94/702252 DC-1994

适用范围

This British Standard specifies the coatings, dimensions, materials, lubrication and performance requirements for pre-applied adhesive type bolts, screws and studs with a micro-encapsulated chemical adhesive feature incorporated into the thread, when tested at an ambient room temperature between 15 ℃ and 30 ℃. It applies to bolts, screws and studs: a) with ISO metric coarse pitch M6 to M20 threads conforming to BS 3643 : Part 2 : 1981; b) with specific strength requirements conforming to either BS 6104 : Part 3 : 1981, BS 6105 : 1981 or BS EN 20898-1 : 1992, as appropriate; c) with threads of tolerance class 6g or 4h conforming to BS 3643 : Part 2 : 1981; d) for application into a mating component with a thread of tolerance class 6H conforming to BS 3643 : Part 2 : 1981; e) for use within the temperature range - 50 ℃ to + 150 ℃. The following are not covered in the scope of this standard: 1) capability of providing a pressure or liquid seal; 2) performance at temperatures outside the operating range; 3) performance of bolts, screws and studs for which a lubricated coating is not permissible.

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