Twin-Washers Get Quote

TWIN WASHERSu00ae has developed a unique security system using tension method instead of friction. DIN 25201 is a norm of wedge-lock system. Twin-Washers cam height is greater than the bolt pitch. In addition, there are radial teeth on the opposite side. The both cams are faced each other. Radial teeth are used under the bolt and the connection surface.

TWIN WASHERSu00ae are tightened under the bolt and/or nut. TWIN WASHERSu00ae loosening happens too little through angle differences and wedge effect blocks it. Even a very low torque when tightening the bolt connection and it creates a wedge effect which can provide to be blocked connection.

TWIN WASHERSu00ae security system uses geometrically to lock bolted connections in the most critical applications. This offers a unique wedge locking system following advantages:

  • Providing maximum safety,
  • Provides superior resistance to loosening due to vibration and dynamic loads,
  • Ease of assembly and disassembly,
  • The locking function is not affected by lubrications,
  • Low and high preloads positive locking,
  • Preload Control,
  • The same temperature characteristics as standard nut & bolt,
  • Reusability.

 

How is resistant to be removed?

Cam angle of TWIN WASHERSu00ae u201cu03b8u201d is greater than the thread pitch angle u201cu03b3u201d. Both of slope angles are different. Since angle of the double washer system is larger than thread angle, for this reason it displays extra resistance to removing. When the TWIN WASHERSu00ae exposed to extreme vibration or dynamic loads bolt creates a wedge effect on the connection.

 
Washer sizeBolt sizeøi
[mm]
øo
[mm]
Thickness T
[mm]
Min. package
[pairs]
Approx. Weight
[kg / 100 pairs]
Article no.
 MetricUNC      
TW3M3#53,47,01,82000,031994
TW3,5M3,5#63,97,61,82000,041995
TW3,5spM3,5#63,99,01,82000,061996
TW4M4#84,47,61,82000,041997
TW4spM4#84,49,01,82000,061998
TW5M5#105,49,01,82000,051999
TW5spM5#105,410,81,82000,112000
TW6M6 6,510,81,82000,072001
TW6spM6 6,513,52,52000,202002
TW1/4" 1/4"7,211,51,82000,082003
TW1/4"sp 1/4"7,213,52,52000,182004
TW8M85/16"8,713,52,52000,152005
TW8spM85/16"8,716,62,52000,282006
TW3/8" 3/8"10,316,62,52000,232007
TW3/8"sp 3/8"10,321,02,52000,482008
TW10M10 10,716,62,52000,222009
TW10spM10 10,721,02,52000,472010
TW11M117/16"11,418,52,52000,292011
TW12M12 13,019,52,52000,292012
TW12spM12 13,025,43,41000,932013
TW1/2" 1/2"13,519,52,52000,272014
TW1/2"sp 1/2"13,525,43,41000,902015
TW14M149/16"15,223,03,41000,562016
TW14spM149/16"15,230,73,41001,412017
TW16M165/8"17,025,43,41000,672018
TW16spM165/8"17,030,73,41001,282019
TW18M18 19,529,03,41000,852020
TW18spM18 19,534,53,41001,582021
TW3/4" 3/4"20,030,73,41001,052022
TW3/4"sp 3/4"20,039,03,41002,202023
TW20M20 21,430,73,41000,932024
TW20spM20 21,439,03,41002,032025
TW22M227/8"23,434,53,41001,292026
TW22spM227/8"23,442,04,6503,312027
TW24M24 25,339,03,41001,682028
TW24spM24 25,348,54,6504,512029
TW1" 1"27,939,03,41001,532030
TW1"sp 1"27,948,54,6504,202031
TW27M27 28,442,05,8503,292032
TW27spM27 28,448,55,8255,392033
TW30M301 1/8"31,447,05,8504,202034
TW30spM301 1/8"31,458,56,6258,962035
TW33M331 1/4"34,448,55,8253,972036
TW33spM331 1/4"34,458,56,6258,312037
TW36M361 3/8"37,455,05,8255,592038
TW36spM361 3/8"37,463,06,6259,152039
TW39M391 1/2"40,458,55,8256,282040
TW42M42 43,263,05,8257,472041
TW45M451 3/4"46,270,07,02510,202042
TW48M48 49,675,07,02512,002043
TW52M522"53,680,07,02513,002044
TW56M562 1/4"59,185,07,01013,502045
TW60M60 63,190,07,01015,202046
TW64M642 1/2"67,195,07,01016,702047
TW68M68 71,1100,09,5128,192048
TW72M72 75,1105,09,5130,702049
TW76M763"79,1110,09,5133,312050
TW80M803 1/8"83,1115,09,5136,022051
TW85M85 88,1120,09,5137,842052
TW90M90 92,4130,09,5147,672053
TW95M95 97,4135,09,5149,812054
TW100M1004"103,4145,09,5158,912055
TW105M105 108,4150,09,5161,282056
TW110M110 113,4155,09,5163,652057
TW115M115 118,4165,09,5175,282058
TW120M120 123,4170,09,5177,942059
TW125M125 128,4173,09,5176,632060
TW130M1305"133,4178,09,5179,172061
Washer sizeBolt sizeøi
[mm]
øo
[mm]
Thickness T
[mm]
Min. package
[pairs]
Approx. Weight
[kg / 100 pairs]
Article no.
 MetricUNC      
TW3ssM3#53,47,02,22000,042062
TW3,5ssM3,5#63,97,62,22000,042063
TW3,5spssM3,5#63,99,02,22000,072064
TW4ssM4#84,47,62,22000,042065
TW4spssM4#84,49,02,22000,072066
TW5ssM5#105,49,02,22000,062067
TW5spssM5#105,410,82,22000,112068
TW6ssM6 6,510,82,22000,092069
TW6spssM6 6,513,52,02000,162070
TW1/4"ss 1/4"7,211,52,22000,092071
TW1/4"spss 1/4"7,213,52,22000,152072
TW8ssM85/16"8,713,52,02000,122073
TW8spssM85/16"8,716,62,02000,222074
TW3/8"ss 3/8"10,316,62,02000,192075
TW3/8"spss 3/8"10,321,02,02000,382076
TW10ssM10 10,716,62,02000,182077
TW10spssM10 10,721,02,02000,372078
TW11ssM117/16"11,418,52,22000,262079
TW12ssM12 13,019,52,02000,232080
TW12spssM12 13,025,43,01000,822081
TW1/2"ss 1/2"13,519,52,02000,242082
TW1/2"spss 1/2"13,525,43,21000,802083
TW14ssM149/16"15,223,03,01000,492084
TW14spssM149/16"15,230,73,21001,312085
TW16ssM165/8"17,025,43,01000,592086
TW16spssM165/8"17,030,73,21001,132087
TW18ssM18 19,529,03,21000,802089
TW18spssM18 19,534,53,21001,562090
TW3/4"ss 3/4"20,030,73,21000,962091
TW3/4"spss 3/4"20,039,03,21002,102092
TW20ssM20 21,430,73,01000,822093
TW20spssM20 21,439,03,21002,062094
TW22ssM227/8"23,434,53,21001,232095
TW22spssM227/8"23,442,03,2502,232096
TW24ssM24 25,339,03,21001,522097
TW24spssM24 25,348,53,2503,502098
TW1"ss 1"27,939,03,21001,422099
TW1"spss 1"27,948,53,2503,222100
TW27ssM27 28,442,06,8503,452101
TW27spssM27 28,448,56,8255,852102
TW30ssM301 1/8"31,447,06,8504,432103
TW30spssM301 1/8"31,458,56,8259,532104
TW33ssM331 1/4"34,448,56,8254,252105
TW36ssM361 3/8"37,455,06,8255,962106
TW39ssM391 1/2"40,458,56,8256,742107
TW42ssM42 43,263,06,8257,962108
TW45ssM451 3/4"46,270,06,82510,202109
TW48ssM48 49,675,06,82512,002110
TW52ssM522"53,680,09,0120,102111
TW56ssM562 1/4"59,185,09,0121,302112
TW60ssM60 63,190,09,0123,502113
TW64ssM642 1/2"67,195,09,0125,802114
TW68ssM68 71,1100,09,0128,202115
TW72ssM72 75,1105,09,0130,702116
TW76ssM763"79,1110,09,0133,302117
TW80ssM803 1/8"83,1115,09,0136,002118