TDdTDdTstnenopmoCd DCode No.In stockNext working dayUse 2 pieces as 1 pair 7.0 3.4 7.6 4.4 9.0 5.410.8 6.513.5 8.716.8 10.719.5 13.023.0 15.225.4 17.030.7 21.439.0 25.32.22.22.22.22.22.22.23.23.23.23.25505505506507307608108709001,1101,730Set price200200200200200200200100100100100132132132165176209319440462660990NNLSSーBOuterRadial ribsInnerWedged-shaped camsM 3M 4M 5M 6M 8M10M12M14M16M20Ｍ24NNLSS200200200200200200200100100100100 33 33 33 33 44 55 991541982313526,6006,6006,6006,6008,80011,00019,80015,40019,80023,10035,200390390390450510530570ーーーー26,40026,40026,40033,00035,20041,80063,80044,00046,20066,00099,000MaterialHardnessSurface treatmentS20C Equivalent 46〜50HRC50〜52HRCSUS316Zinc coatingーInner diameter d 3〜 8 ±0.110〜24 ±0.2Outer diameter DThicknessTNo.±0.2 ±0.25±0.2 ±0.2Code No.AvailableboltCodeNo. 3 4 5 6 8101214162024NNLDP10 P.38Removal of Price list.Please contact our sales staff for prices.Code No.AvailableboltCodeNo. 3 4 5 6 8101214162024Numberof pairs@/pair @/setNo. 3 4 5 6 8101214162024CorrectNNLDP10.9μT＝0.14、GF＝0.71TorqueTightening force^pKNNm 3.2 1.7 5.6 3.8 9.1 7.5 12.9 13.1 23.4 31.3 37.0 62.0 54.0 106 .0 74 .0169 .0100 .0258 .0156 .0506 .0 225 .0 872 .0StrengthclassAvailablebolts 3 M 3 M 4 4M 5 5M 6 6 M 8 8M10 10M12 12M14 14M16 16M20 20 24M24 μT＝Screw coefficient of friction, GF＝Yield point ration.12.9μT＝0.14、GF＝0.71Tightening force^pTorqueKNNm 3.9 2.0 6.7 4.6 10.9 9.0 15.4 15.7 28.1 37.6 44.0 74 .0 65 .0 127 .0 89 .0 203.0120 .0 310 .0188 .0 607.0270 .0 1047.0 Principle of loosening prevention washersOn the inside of the loosening prevention washers are wedge-shaped cams, and on the outside are radial ribs. Two of these washers form a pair. If the bolt becomes loose, the cam of one of the washers pushes up the cam of the other washer, and a force that tries to separate the washers is generated. However, because of the wedge effect, the washers will not separate more than screw pitch. Indication of the drawingThe wedge angle α is greater than the screw lead angle β. The loosening of bolt can be effectively prevented by the wedge effect. Results of vibration testTest method：Yanker type vibration testThe result is better than other vibration test. In the case of incomplete screwing down, bolt can be tightly fastened. M 3M 4M 5M 6M 8M10M12M14M16M20Ｍ24 7.0 3.4 7.6 4.4 9.0 5.410.8 6.513.5 8.716.8 10.719.5 13.023.0 15.225.4 17.030.7 21.439.0 25.3NNLDP1.81.81.81.82.52.52.53.43.43.43.4 90 90 90 90110120160ーーーーSet priceNNLDPーB@/pair（2 pieces） 1～19 20～99 20～199ーーーーーーー 610 630 7801,210Code No.CodeNumberof pairs@/pair @/setNo. 3 4 5 6 8101214162024WrongWrongNNLSSA2ー80、A4ー80μT＝0.14、GF＝0.65TorqueTightening force^pKNNm 2.0 1.2 3.4 2.7 5.5 5.3 7.8 9.2 14.3 22.0 23.0 43.0 33.0 75.0 45.0 119.0 75.0 181.0 95. 0356.0 137.0613.08.8μT＝0.12、GF＝0.75TorqueTightening force^pKNNm 2.4 1.3 4.2 3.0 6.8 5.9 9.7 10.3 17.6 24.8 28 .0 49 .0 40 .0 84 .0 55.0133 .0 75 .0203 .0118.0398 .0169 .0686 .0859Allowable temperature limitー20〜300 NNLDPー20〜400 NNLSSCode@/pair（2 pieces） 1～19 20～99 20～199ー130ー130ー130ー130ー150ー170ー230220310230330290420420610Code No.Code Set ordering: for No.3〜12, 200 pairs in one case; for No.14〜24, 100 pairs in one case. Correct setting methodBefore reusing these washers, check to ensure that the wedged-shaped cams are not flattened or cracked. Then lay grease on, and use them according to the correct setting method shown in the drawing below. ※Combined using with other washers are not available Torque valueThe correct tightening force is essentially related to recommend tightening torque. Common steel and aluminum will get the same tightening force and tightening torque by use these washers.Table below is for torque values, please use torque spanner.CodeNo.Loosening Prevention Washers
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