BS EN 14399-9 Basic dimensions for Nut Face Washers & Bolt Face Washers

BS EN 14399-9 Basic dimensions for Nut Face Washers & Bolt Face Washers

Dimensions of Nut Face Washers (HN)

Size (d)M12M16M20M22M24M27M30M36
Internal diameter
(d1)
12.1-12.3516.1-16.3520.1-20.4022.3-22.6024.2-24.5027.2-27.5530.2-30.5536.2-36.55
External diameter
(d2)
22.7-2427.7-2934.4-3637.4-3941.4-4346.4-4850.1-5260.1-62
Thickness
(h)
2.7-4.33.7-4.33.7-4.33.7-4.33.7-4.34.4-5.64.4-5.65.4-6.6

Dimensions of Bolt Face Washers (HB)

Size (d)M12M16M20M22M24M27M30M36
Internal diameter
(d1)
13-13.2717-17.2721-21.3323-23.3325-25.3328-28.5331-31.6237-37.62
External diameter
(d2)
23.48-2429.48-3036.38-3738.38-3943.38-4449-5054.80-5664.80-66
Thickness
(h)
2.7-4.33.7-4.33.7-4.33.7-4.33.7-4.34.4-5.64.4-5.65.4-6.6
Inside chamfer
(c)
1.6-1.91.6-1.92.0-2.52.0-2.52.0-2.52.5-3.02.5-3.02.5-3.0
Outside chamfer
(e)
0.50-1.00.75-1.500.75-1.500.75-1.500.75-1.501.0-2.01.0-2.01.25-2.50
Dimensions in millimetres

For use with BS EN 14399 High-strength structural bolting assemblies for preloading

Whilst the information is provided in good faith, Andrews Fasteners Ltd are not under any responsibility or liability in respect of errors or information that was found to be incorrect or for any reliance the user may place on it.

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