BS EN 1935
BS EN 1935:2002 – Single Axis Hinges
This European standard specifies requirements for single-axis hinges for windows and doors opening in one direction only, whose rotation axis is no more than 30 mm from the face of the sash or door. It covers both fixed pin and lift-off hinges, and contains additional requirements for hinges intended for use on fire doors.
BS EN 1935:2002 classifies door furniture by using an 8-digit coding system. Each digit refers to a particular feature of the product measured against the standard’s performance requirements.
Digit 1 – Category of use
Four categories of use are identified:
Grade 1: light duty
Grade 2: medium duty
Grade 3: heavy duty
Grade 4: severe duty
Digit 2 – Durability
Three grades are identified for single-axis hinges manufactured to this European standard:
Grade 3: 10,000 test cycles, for light duty hinges on windows only
Grade 4: 25,000 test cycles, for light duty hinges on windows and doors
Grade 7: 200,000 test cycles, for medium, heavy and severe duty hinges on doors only
Digit 3 – Test door mass
Eight door mass grades related to single-axis hinges are identified in this European standard as shown in table below.
|Test door mass grade||Door mass|
Digit 4 – Suitability for fire/smoke door use
Two grades of suitability are identified for single-axis hinges:
Grade 0: not suitable for fire/smoke resistant door assemblies
Grade 1: suitable for fire/smoke resistant door assemblies subject to satisfactory assessment of the contribution of the single axis hinge to the fire resistance of the specified fire/smoke door assemblies.
Digit 5 – Safety
Single-axis hinges are required to satisfy the essential requirements of safety in use. Therefore, only grade 1 is identified.
Digit 6 – Corrosion resistance
Five grades of corrosion resistance are identified in accordance with BS EN 1670:2007
Grade 0: no defined corrosion resistance
Grade 1: mild resistance
Grade 2: moderate resistance
Grade 3: high resistance
Grade 4: very high resistance
Digit 7 – Security
Two grades of security are identified for single-axis hinges:
Grade 0: not suitable for use on burglar-resistant door assemblies
Grade 1: suitable for applications requiring a degree of security. Annex C of this European standard details the hinge grade to use for the level of security required.
Digit 8 – Hinge grade
Fourteen grades are identified in this European standard and are detailed in table 2 below. The full classification is shown in the standard.
|Hinge Grade||Usage||Test Cycles||Door Mass|
Door and Hardware Federation (DHF) Best Practice Guide – Single-axis hinges to BS EN 1935