home Products Double fold self-locking washer

Double fold self-locking washer

  • Brand:

    T,TGR,XDM,OEM as requirement

  • Brief:

    DIN 25201 Double fold self-locking washer

  • Surface:

    Plain color, Dacromet coating, Galvanizing

  • Material:

    stainless steel304,316,316L,317,317L,carbon steel,etc

  • Size:

    NL3-NL130,Custom-made

  • MOQ:

    According to size
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product details

This type of washer lock a part in place and are most often used in applications where there are drastic heat or heavy vibrations. Normally used to distribute loads of threaded bolts, screws and nuts evenly as the fasteners in tightened.

Size 3 3.5 3.5 4 4 5 5 6 6 1/4 ① 1/4 8 8 3/8 ①
Large ② Large ② Large ② Large ② Large ①② Large ②
Bolt size Metric M3 M3.5 M3.5 M4 M4 M5 M5 M6 M6 - - M8 M8 -
Inch #5 #6 #6 #8 #8 #10 #10 - - 1/4” 1/4” 5/16” 5/16” 3/8”
d max 3.5 4 4 4.5 4.5 5.5 5.5 6.6 6.6 7.3 7.3 8.8 8.8 10.5
min 3.3 3.8 3.8 4.3 4.3 5.3 5.3 6.4 6.4 7.1 7.1 8.6 8.6 10.1
dc Nominal Size 7 7.6 9 7.6 9 9 10.8 10.8 13.5 11.5 13.5 13.5 16.6 16.6
max 7.2 7.8 9.2 7.8 9.2 9.2 11 11 13.7 11.7 13.7 13.7 16.8 16.8
min 6.8 7.4 8.8 7.4 8.8 8.8 10.6 10.6 13.3 11.3 13.3 13.3 16.4 16.4
h Steel Nominal Size 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 2.5 2.5 2.5 2.5 2.5 2.5
max 2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.05 2.75 2.75 2.75 2.75 2.75 2.75
min 1.55 1.55 1.55 1.55 1.55 1.55 1.55 1.55 2.25 2.25 2.25 2.25 2.25 2.25
h Stainless Steel Nominal Size 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2.2 2 2.2 2.2 2 2 2
max 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.25 2.45 2.45 2.25 2.25 2.25
min 1.95 1.95 1.95 1.95 1.95 1.95 1.95 1.95 1.75 1.95 1.95 1.75 1.75 1.75

Size 3/8 10 10 11 12 12 1/2 ① 1/2 14 14 16 16 18 18
Large ①② Large ② Large ② Large ①② Large ② Large ② Large ②
Bolt size Metric - M10 M10 M11 M12 M12 - - M14 M14 M16 M16 M18 M18
Inch 3/8” - - 7/16” - - 1/2” 1/2” 9/16” 9/16” 5/8” 5/8” - -
d max 10.5 10.9 10.9 11.6 13.2 13.2 13.7 13.7 15.4 15.4 17.2 17.2 19.7 19.7
min 10.1 10.5 10.5 11.2 12.8 12.8 13.3 13.3 15 15 16.8 16.8 19.3 19.3
dc Nominal Size 21 16.6 21 18.5 19.5 25.4 19.5 25.4 23 30.7 25.4 30.7 29 34.5
max 21.2 16.8 21.2 18.7 19.7 25.6 19.7 25.6 23.2 30.9 25.6 30.9 29.2 34.7
min 20.8 16.4 20.8 18.3 19.3 25.2 19.3 25.2 22.8 30.5 25.2 30.5 28.8 34.3
h Steel Nominal Size 2.5 2.5 2.5 2.5 2.5 3.4 2.5 3.4 3.4 3.4 3.4 3.4 3.4 3.4
max 2.75 2.75 2.75 2.75 2.75 3.65 2.75 3.65 3.65 3.65 3.65 3.65 3.65 3.65
min 2.25 2.25 2.25 2.25 2.25 3.15 2.25 3.15 3.15 3.15 3.15 3.15 3.15 3.15
per 1000 units≈kg ③ Steel ≈ 4.8 2.2 4.7 2.9 2.9 9.3 2.7 9 5.6 14.1 6.7 12.8 8.9 15.8
h Stainless Steel Nominal Size 2 2 2 2.2 2 3 2 3.2 3 3.2 3 3.2 3.2 3.2
max 2.25 2.25 2.25 2.45 2.25 3.25 2.25 3.45 3.25 3.45 3.25 3.45 3.45 3.45
min 1.75 1.75 1.75 1.95 1.75 2.75 1.75 2.95 2.75 2.95 2.75 2.95 2.95 2.95
per 1000 units≈kg ③ Stainless Steel ≈ 3.8 1.8 3.7 2.6 2.3 8.2 2.2 8 4.9 13.1 5.9 11.3 8 15.6

Size 3/4 ① 3/4 20 20 22 22 24 24 1 ① 1 27 27 30 30
Large ①② Large ② Large ② Large ② Large ①② Large ② Large ②
Bolt size Metric 　 - M20 M20 M22 M22 M24 M24 - - M27 M27 M30 M30
　 3/4” - - 7/8” 7/8” - - 1” 1” - - 1 1/8” 1 1/8”
d max 　 20.2 21.6 21.6 23.6 23.6 25.5 25.5 28.1 28.1 28.6 28.6 31.6 31.6
　 19.8 21.2 21.2 23.2 23.2 25.1 25.1 27.7 27.7 28.2 28.2 31.2 31.2
dc Nominal Size 　 39 30.7 39 34.5 42 39 48.5 39 48.5 42 48.5 47 58.5
　 39.2 30.9 39.2 34.7 42.2 39.2 48.7 39.3 48.8 42.3 48.8 47.3 58.8
　 38.8 30.5 38.8 34.3 41.8 38.8 48.3 38.7 48.2 41.7 48.2 46.7 58.2
h Steel Nominal Size 3.4 3.4 3.4 3.4 3.4 4.6 3.4 4.6 3.4 4.6 5.8 5.8 5.8 6.6
3.65 3.65 3.65 3.65 3.65 4.85 3.65 4.85 3.65 4.85 6.05 6.05 6.05 6.6
3.15 3.15 3.15 3.15 3.15 4.35 3.15 4.35 3.15 4.35 5.55 5.55 5.55 6.1
per 1000 units≈kg ③ Steel ≈ 10.5 22.1 9.3 20.9 12.5 31.9 17.4 45.1 15.3 42 31.4 52.7 41 85.8
h Stainless Steel Nominal Size 3.2 3.2 3 3.2 3.2 3.2 3.2 3.2 3.2 3.2 6.8 6.8 6.8 6.8
3.45 3.45 3.25 3.45 3.45 3.45 3.45 3.45 3.2 3.2 6.8 6.8 6.8 6.8
2.95 2.95 2.75 2.95 2.95 2.95 2.95 2.95 2.7 2.7 6.3 6.3 6.3 6.3
per 1000 units≈kg ③ Stainless Steel ≈ 9.6 21 8.2 20.6 12.3 22.2 15.9 35 14.2 27.9 34.5 53.4 44.9 91.8

Size 33 33 36 36 39 42 45 48 52 56 60 64 68 72
Large ② Large ②
Bolt size Metric M33 M33 M36 M36 M39 M42 M45 M48 M52 M56 M60 M64 M68 M72
Inch 1 1/4” 1 1/4” 1 3/8” 1 3/8” 1 1/2” - 1 3/4” - 2” 2 1/4” - 2 1/2” - -
d max 34.6 34.6 37.6 37.6 40.6 43.4 46.7 50.1 54.1 59.6 63.6 67.6 71.6 75.6
min 34.2 34.2 37.2 37.2 40.2 43 46.2 49.6 53.6 59.1 63.1 67.1 71.1 75.1
dc Nominal Size 48.5 58.5 55 63 58.5 63 70 75 80 85 90 95 100 105
max 48.8 58.8 55.3 63.3 58.8 63.3 70 75 80 85 90 95 100 105
min 48.2 58.2 54.7 62.7 58.2 62.7 68 73 78 83 88 93 98 103
h Steel Nominal Size 5.8 6.6 5.8 6.6 5.8 5.8 7 7 7 7 7 7 9.5 9.5
max 6.05 6.6 6.05 6.6 6.05 6.05 7.75 7.75 7.75 7.75 7.75 7.75 10.25 10.25
min 5.55 6.1 5.55 6.1 5.55 5.55 6.25 6.25 6.25 6.25 6.25 6.25 8.75 8.75
per 1000 units≈kg ③ Steel ≈ 38.9 80 54.9 91.5 58.9 79.7 102 120 130 135 152 167 282 307
h Stainless Steel Nominal Size 6.8 / 6.8 / 6.8 6.8 6.8 6.8 9 9 9 9 9 9
max 6.8 / 6.8 / 6.8 6.8 7.55 7.55 9.75 9.75 9.75 9.75 9.75 9.75
min 6.3 / 6.3 / 6.3 6.3 6.05 6.05 8.25 8.25 8.25 8.25 8.25 8.25
per 1000 units≈kg ③ Stainless Steel ≈ 42.8 / 59.6 / 67.4 75 102 120 180.4 213 235 258 282 307

Size 76 80 85 90 95 100 105 110 115 120 125 130
Bolt size Metric M76 M80 M85 M90 M95 M100 M105 M110 M115 M120 M125 M130
Inch 3” 3 1/8” - - - 4” - - - - - 5”
d max 79.6 83.6 88.6 92.9 97.9 103.9 108.9 113.9 118.9 123.9 128.9 133.9
min 79.1 83.1 88.1 92.4 97.4 103.4 108.4 113.4 118.4 123.4 128.4 133.4
dc Nominal Size 110 115 120 130 135 145 150 155 165 170 173 178
max 110 115 120 130 135 145 150 155 165 170 173 178
min 108 113 118 128 133 143 148 153 163 168 171 176
h Steel Nominal Size 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5 9.5
max 10.25 10.25 10.25 10.25 10.25 10.25 10.25 10.25 10.25 10.25 10.25 10.25
min 8.75 8.75 8.75 8.75 8.75 8.75 8.75 8.75 8.75 8.75 8.75 8.75
per 1000 units≈kg ③ Steel ≈ 333 360 378 477 498 589 613 635 753 779 766 792
h Stainless Steel Nominal Size 9 9 / / / / / / / / / /
max 9.75 9.75 / / / / / / / / / /
min 8.25 8.25 / / / / / / / / / /
per 1000 units≈kg ③ Stainless Steel ≈ 333 360 / / / / / / / / / /