EN 1661/14218 hexagonal nut with collar is a nut with a wide flange at one end that acts as an integral washer. This serves to distribute the pressure of the nut over the part being fastened, reducing the possibility of damage to the part and making it less likely to loosen due to uneven tightening surfaces. These large flange nut are mostly hexagonal in shape and are made of hardened steel, usually plated with zinc.

EN 1661/EN14218 Large Hex Flange Nut Specifications

DIN EN 1661 Flange Nuts

EN 1661 - 1998 Hexagon Nuts With Flange

Equivalent norm: GB/T 6177.1, ISO 4161, ANSI/ASME B18.2.4.4M, NF E 25-406

EN 1661 Hot Dipped Galvanized Flange Nut Dimensions

Legend Making

P=pitch Carbon Steel:6,8,10,12

K=height of the nut Thread:6H

D=the nominal diameter of the thread Surface:BLK,ZP,HDG,etc

E=The length of the diagonal

S=The length of the flat

EN 14218 Flange Nuts

EN 14218 - 2003 Hexagon Head Nuts With Flange With Fine Pitch Thread

EN 14218 Hot Dipped Galvanized Flange Nut Dimensions

Legend Making

P=pitch Carbon Steel:6,8,10,12

K=height of the nut Thread:6H

D=the nominal diameter of the thread Surface:BLK,ZP,HDG,etc

E=The length of the diagonal

S=The length of the flat

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