Nord-Lock Steel Washers
Nord-Lock washers are easy and effective to use while ensuring structural security for applications exposed to vibration and dynamic loads.
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Product Information
Nord-Lock washers are easy and effective to use while ensuring structural security for applications exposed to vibration and dynamic loads.
Dimensions: Millimetres (mm)
Material: Steel EN 1.7182 or equivalent
Finish: Zinc Flake Coating (Delta Protekt), through hardened
Installing the washers
The pre-assembled washers are installed in pairs, cam face to cam face. Nord-Lock recommends lubrication when possible.
Tightening
Tighten Nord-Lock washers with standard tools according to the torque guidelines below. Tightening guidelines for other bolt grades are available through your Nord-Lock representative.
Untightening
Untightening Nord-Lock washers is as simple as tightening. Note that since the locking function is not based on increased friction, the untightening torque is generally lower than the tightening torque. Therefore it is not possible to measure offtorque as verification of locking function.
Reusing Nord-Lock
Nord-Lock washers can normally be reused. As with all fasteners, they should be inspected for wear before reassembly. Make sure that the washers are reinstalled correctly cam face to cam face. Nord-Lock recommends lubrication of fasteners before reuse in order to minimize changes in friction conditions.
| Washer size | Bolt Size | ø [mm] | ø [mm] | Thickness T [mm] | Min. Package [pairs] | Approx Weight kg/100 Pairs | ||
|---|---|---|---|---|---|---|---|---|
| Metric | UNC | |||||||
| NL3 | M3 | #5 | 3,4 | 7,0 | 1,8 | 200 | 0,03 | N L 3 N L 8Ø i±0,1 mmN L 1 0 N L 4 2Ø i±0,2 mmN L 4 5 N L 1 3 0Ø i+0,5 / -0,0 mm |
| NL3,5 | M3,5 | #6 | 3,9 | 7,6 | 1,8 | 200 | 0,04 | |
| NL3,5sp | M3,5 | #6 | 3,9 | 9,0 | 1,8 | 200 | 0,06 | |
| NL4 | M4 | #8 | 4,4 | 7,6 | 1,8 | 200 | 0,04 | |
| NL4sp | M4 | #8 | 4,4 | 9,0 | 1,8 | 200 | 0,06 | |
| NL5 | M5 | #10 | 5,4 | 9,0 | 1,8 | 200 | 0,05 | |
| NL5sp | M5 | #10 | 5,4 | 10,8 | 1,8 | 200 | 0,11 | |
| NL6 | M6 | – | 6,5 | 10,8 | 1,8 | 200 | 0,07 | |
| NL6sp | M6 | – | 6,5 | 13,5 | 2,5 | 200 | 0,20 | |
| NL1/4 | – | 1/4 | 7,2 | 11,5 | 1,8 | 200 | 0,08 | |
| NL1/4sp | – | 1/4 | 7,2 | 13,5 | 2,5 | 200 | 0,18 | |
| NL8 | M8 | 5/16 | 8,7 | 13,5 | 2,5 | 200 | 0,15 | |
| NL8sp | M8 | 5/16 | 8,7 | 16,6 | 2,5 | 200 | 0,28 | N L 3 N L 2 4Øo± 0,2 mmN L 2 7 N L 4 2Øo± 0,3 mmN L 4 5 N L 1 3 0Øo+0,0 / -2,0 mm |
| NL3/8 | – | 3/8 | 10,3 | 16,6 | 2,5 | 200 | 0,23 | |
| NL3/8sp | – | 3/8 | 10,3 | 21,0 | 2,5 | 200 | 0,48 | |
| NL10 | M10 | – | 10,7 | 16,6 | 2,5 | 200 | 0,22 | |
| NL10sp | M10 | – | 10,7 | 21,0 | 2,5 | 200 | 0,47 | |
| NL11 | M11 | 7/16 | 11,4 | 18,5 | 2,5 | 200 | 0,29 | |
| NL12 | M12 | – | 13,0 | 19,5 | 2,5 | 200 | 0,29 | |
| NL12sp | M12 | – | 13,0 | 25,4 | 3,4 | 100 | 0,93 | |
| NL1/2 | – | 1/2 | 13,5 | 19,5 | 2,5 | 100 | 0,27 | |
| NL1/2sp | – | 1/2 | 13,5 | 25,4 | 3,4 | 100 | 0,90 | |
| NL14 | M14 | 9/16 | 15,2 | 23,0 | 3,4 | 100 | 0,56 | |
| NL14sp | M14 | 9/16 | 15,2 | 30,7 | 3,4 | 100 | 1,41 | |
| NL16 | M16 | 5/8 | 17,0 | 25,4 | 3,4 | 100 | 0,67 | TN L 3 N L 4 2T ± 0,25 mmN L 4 5 N L 1 3 0T ± 0,75 mmNote that washers with thickness 6,6 mm hasa thickness tolerance +0,0 / -0,5 mm |
| NL16sp | M16 | 5/8 | 17,0 | 30,7 | 3,4 | 100 | 1,28 | |
| NL18 | M18 | – | 19,5 | 29,0 | 3,4 | 100 | 0,85 | |
| NL18sp | M18 | – | 19,5 | 34,5 | 3,4 | 100 | 1,58 | |
| NL3/4 | – | 3/4 | 20,0 | 30,7 | 3,4 | 100 | 1,05 | |
| NL3/4sp | – | 3/4 | 20,0 | 39,0 | 3,4 | 100 | 2,20 | |
| NL20 | M20 | – | 21,4 | 30,7 | 3,4 | 100 | 0,93 | |
| NL20sp | M20 | – | 21,4 | 39,0 | 3,4 | 100 | 2,03 | |
| NL22 | M22 | 7/8 | 23,4 | 34,5 | 3,4 | 100 | 1,29 | |
| NL22sp | M22 | 7/8 | 23,4 | 42,0 | 4,6 | 50 | 3,31 | |
| NL24 | M24 | – | 25,3 | 39,0 | 3,4 | 100 | 1,68 | |
| NL24sp | M24 | – | 25,3 | 48,5 | 4,6 | 50 | 4,51 | |
| NL1 | – | 1 | 27,9 | 39,0 | 3,4 | 100 | 1,53 | |
| NL1sp | – | 1 | 27,9 | 48,5 | 4,6 | 50 | 4,20 | |
| NL27 | M27 | – | 28,4 | 42,0 | 5,8 | 50 | 3,29 | |
| NL27sp | M27 | – | 28,4 | 48,5 | 5,8 | 25 | 5,39 | |
| NL30 | M30 | 1 1/8 | 31,4 | 47,0 | 5,8 | 50 | 4,20 | |
| NL30sp | M30 | 1 1/8 | 31,4 | 58,5 | 6,6 | 25 | 8,96 | |
| NL33 | M33 | 1 1/4 | 34,4 | 48,5 | 5,8 | 25 | 3,97 | |
| NL33sp | M33 | 1 1/4 | 34,4 | 58,5 | 6,6 | 25 | 8,31 | |
| NL36 | M36 | 1 3/8 | 37,4 | 55,0 | 6,6 | 25 | 5,59 | |
| NL36sp | M36 | 1 3/8 | 37,4 | 63,0 | 6,6 | 25 | 9,15 | |
| NL39 | M39 | 1 1/2 | 40,4 | 58,5 | 6,6 | 25 | 6,28 | |
| NL42 | M42 | – | 43,2 | 63,0 | 6,6 | 25 | 7,47 | |
| NL45 | M45 | 1 3/4 | 46,2 | 70,0 | 7,0 | 25 | 10,20 | |
| NL48 | M48 | – | 49,6 | 75,0 | 7,0 | 25 | 12,00 | |
| NL52 | M52 | – | 53,6 | 80,0 | 7,0 | 25 | 13,00 | |
| NL56 | M56 | 2 | 59,1 | 85,0 | 7,0 | 10 | 13,50 | |
| NL60 | M60 | 2 1/4 | 63,1 | 90,0 | 7,0 | 10 | 15,20 | |
| NL64 | M64 | – | 67,1 | 95,0 | 7,0 | 10 | 16,70 | |
| NL68 | M68 | – | 71,1 | 100,0 | 9,5 | 1 | 28,19 | |
| NL72 | M72 | 3 | 75,1 | 105,0 | 9,5 | 1 | 30,70 | |
| NL76 | M76 | 3 1/8 | 79,1 | 110,0 | 9,5 | 1 | 33,31 | |
| NL80 | M80 | – | 83,1 | 115,0 | 9,5 | 1 | 36,02 | |
| NL85 | M85 | – | 88,1 | 120,0 | 9,5 | 1 | 37,84 | |
| NL90 | M90 | – | 92,4 | 130,0 | 9,5 | 1 | 47,67 | |
| NL95 | M95 | – | 97,4 | 135,0 | 9,5 | 1 | 49,81 | |
| NL100 | M100 | 4 | 103,4 | 145,0 | 9,5 | 1 | 58,91 | |
| NL105 | M105 | – | 108,4 | 150,0 | 9,5 | 1 | 61,28 | |
| NL110 | M110 | – | 113,4 | 155,0 | 9,5 | 1 | 63,65 | |
| NL115 | M115 | – | 118,4 | 165,0 | 9,5 | 1 | 75,28 | |
| NL120 | M120 | – | 123,4 | 170,0 | 9,5 | 1 | 77,94 | |
| NL125 | M125 | – | 128,4 | 173,0 | 9,5 | 1 | 76,63 | |
| NL130 | M130 | 5 | 133,4 | 178,0 | 9,5 | 1 | 79,17 | |
With ISO9001: 2015 approval incorporating Design Status, our qualified engineering staff are able to offer a completely free of charge engineering service and are available to assist with part selection, custom design, application requirements, material selection and more.
Applications are discussed in-depth, first-off design data and drawings are submitted for approval to ensure our customers are provided with the correct design, first time. However, on those rare occasions when modifications are necessary, our no-tooling process and flexible manufacturing procedures means the production of prototypes is easily and economically achieved without onerous tooling charges and long lead times.
At TFC we realise that Quality runs through the entire business, not just our products. We have continually invested in the right people to provide the superior market knowledge and customer service.
Our supply chain partners, from manufacturers to logistics and information technology are carefully chosen to ÿt our commitment to quality
Quality assured since 1981
ISO 9001:2015
Aerospace AS9100C & AS9120A
All products are batch traceable and can be supplied in accordance with REACH, RoHs and Weee.
Certificates of Conformity are available on request and Full material certification is also available on many items.
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