EN 14399-3: System HR - Proof Load values for Nuts - Andrews Fasteners - CE Approved Bolts, Nuts & Washers
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EN 14399-3: System HR – Proof Load values for Nuts

Thread Nominal stress

area of standard

test mandarel

Property class
8 10
d mm^2 N
M12 84.3 84300 97800
M16 157 157000 182100
M20 245 245000 284200
M22 303 303000 351200
M24 353 353000 409500
M27 459 459000 532400
M30 561 561000 650800
M36 817 817000 947700

The Proof Load values are based on stress of 1000 MPa for property class 8; and 1160 MPa for property class 10. Tolerance class 6H or 6AZ.

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