Mekaniska system och komponenter: allmänt

Kommittébeteckning: SIS/TK 103 (Fästelement)
Källa: CEN
Svarsdatum: den 17 apr 2020
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This document specifies mechanical and physical properties of flat washers, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with a specified property class in accordance with ISO 898-1 and ISO 898-2. NOTE 1 These types of washers can also be used with other fasteners such as screws forming their own mating thread. Washers that conform to the requirements of this document are evaluated at an ambient temperature range of 10 °C to 35 °C. They might not retain the specified mechanical and physical properties at elevated temperatures and/or lower temperatures. NOTE 2 Washers conforming to the requirements of this document are used in applications ranging from -50 °C to +150 °C. Users are advised to consult an experienced fastener expert for temperatures outside this range and up to a maximum temperature of +300 °C when determining appropriate choices, or for critical applications. This document is applicable to the following flat captive and non-captive washers made of carbon steel or alloy steel, with thickness from 0,2 mm to 12 mm: — plain washers (with or without knurls, ribs or chamfers); — square washers; — square hole washers; — shaped plates. It does not specify requirements for the following properties: — corrosion resistance; — weldability.

Ämnesområden: Övriga fästelement
Kommittébeteckning: SIS/TK 179 (Fönster, dörrar, portar, glasfasader och bygglas)
Källa: CEN
Svarsdatum: den 22 maj 2020
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This document provides a test method for determining the bearing capacity (pull out force) of a connection consisting of a screw in a screw thread channel, which cannot be calculated in accordance with current codes or conventional calculations. This document can be applied to several products, including doors, windows and curtain walling.

This document applies to screw thread channels made out of metal as well as metal screws.

The pull out forces of such connections can already be assessed indirectly with another test method e.g. wind load resistance for doors/windows according to EN 12211 or curtain walling kits according to EN 12179. Additional information with respect to the mechanical performance of connections and direct applications can be determined with the test method described in this document.

Kommittébeteckning: SIS/TK 277 (Press- och formverktyg samt fixturdetaljer)
Källa: ISO
Svarsdatum: den 2 jun 2020
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This document describes the safety requirements for gas springs and the correct installation instructions for nitrogen gas springs for use in stamping dies. The other parts of ISO 11901 describe the different designs in detail and are to be observed respectively.

The instructions and operating conditions described in Annex A help to maximise lifetime and ensure the safe operation of nitrogen gas springs.