Andrews Fasteners Ltd

AndFast Malaysia SDN BHD

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EN 14399-3: System HR – Proof Load values for Nuts

ThreadNominal stress

area of standard

test mandarel

Property class
810
dmm^2N
M1284.38430097800
M16157157000182100
M20245245000284200
M22303303000351200
M24353353000409500
M27459459000532400
M30561561000650800
M36817817000947700

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.