BlueFast® metric hexagonal K-nuts

Self locking 3 crimp 1100 MPa 235 °C

free of cadmium and chrome VI

All dimensions in millimeters.

PartnumberThread TThread tolA maxB minE minSH maxK minWeight**Request
BFK HEXA M03050M3 x 0,54H6H64.94.44 h133.00.50.28 g
BFK HEXA M04070M4 x 0,74H6H86.55.55 h134.00.60.50 g
BFK HEXA M05080M5 x 0,84H6H9.28.06.76 h135.00.60.80 g
BFK HEXA M06100M6 x 1,04H5H10.59.47.87 h135.40.91.15 g
BFK HEXA M07100M7 x 1,04H5H12.611.38.98 h136.21.01.17 g
BFK HEXA M08100M8 x 1,04H5H13.612.311.110 h137.21.13.1 g
BFK HEXA M08125M8 x 1,254H5H13.612.311.110 h137.21.13.1 g
BFK HEXA M09100 *M9 x 1,04H5H16.615.213.312 h138.51.35 g
BFK HEXA M09125 *M9 x 1,254H5H16.615.213.312 h138.51.35 g
BFK HEXA M10100M10 x 1,04H5H16.615.213.312 h138.51.34.5 g
BFK HEXA M10125M10 x 1,254H5H16.615.213.312 h139.01.34.5 g
BFK HEXA M10150M10 x 1,54H5H16.615.213.312 h139.01.34.5 g
BFK HEXA M11100 *M11 x 1,04H5H19.818.215.514 h1310.82.010.5 g
BFK HEXA M12100 *M12 x 1,04H5H19.818.215.514 h1310.82.010.2 g
BFK HEXA M12125M12 x 1,254H5H19.818.215.514 h1310.82.010.2 g
BFK HEXA M12150M12 x 1,54H5H19.818.215.514 h1310.82.010.2 g
BFK HEXA M12175M12 x 1,754H5H19.818.215.514 h1310.82.010.2 g
BFK HEXA M14100 *M14 x 1,04H5H2321.817.816 h1312.02.011.8 g
BFK HEXA M14125 *M14 x 1,254H5H2321.817.816 h1312.02.011.8 g
BFK HEXA M14150M14 x 1,54H5H2321.817.816 h1312.02.011.8 g
BFK HEXA M14200 *M14 x 2,04H5H2321.817.816 h1312.02.011.8 g
BFK HEXA M16150 *M16 x 1,54H5H2625.321.119 h1313.52.2-
BFK HEXA M18150 *M18 x 1,54H5H2928.324.522 h1315.02.2-

* special sizes on request

** approximate weight, indication only


alloy steel SAE 8740


max. 45 HRC

Finish & Identification

Zinc-Nickel plating
with trivalent chromium treatment
+ MoS2 dry film lubricant
+ blue dot identification


Recommended tolerance for male thread is 4h6h.

(suitable for M AND MJ thread profile)

Locking & Performance

Locking by 3 crimp deformation;
Locking torque and performance according to LN65016

version: v211011002 – KL

made in Europe

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