Washers

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Belleville Washers

Belleville Washers


Description:

Belleville washers come under the spring type washers and are used to apply a flexible pre-load to a bolted joint. They can be used individually or in a stack for increased frictional grip. When these washers are used in a stack, they can either be stacked with a similar orientation or stacked orientation depending on the requirements of the applications. The most important advantage of these washers from ITA Fasteners is that they can support huge loads even in a cramped installation space.

Since these washers can be stacked in an unlimited number of ways, they offer extreme versatility and its upto your creative imaginations to decide how to use the washers. This is owed to its structure which consists of a force from its periphery and an opposing force from the conical center. With a suitable arrangement of the washers, dampening effect may also be achieved. It is available in stainless steel, carbon steel, and alloy steel to bear more wear and tear while also making it more corrosion resistant.


Dimensional Standards:

DIN 6796, DIN 6908, DIN 137B, DIN 137A


Size range:

Metric: M3 to M42
Inches: As Per Requirement

BELLEVILLE WASHERS DIMENSIONS

DIN 6796 - Conical spring washer for bolted connections

DIN  6796
DIN  6796

Legend:
d1 - Inner diameter
d2 - Outer diameter
S - Washer width
h - unloaded washer height
Makings:
Steel: spring steel
Stainless: A2,A4
Plastic: - 
Non Ferrous: - 
Thread: -
Notes:
Table according to DIN 6796:
dimensions in mm

Nominal sized1d2shWeight kg/1000pcsFor thread size
 H14h14 max.min.  
22,250,40,60,50,05M
2,52,760,50,720,610,09M2,5
33,270,60,850,720,14M3
3,53,780,81,060,920,25M3,5
44,3911,31,120,38M4
55,3111,21,551,350,69M5
66,4141,521,71,43M6
77,4171,752,322,53M7
88,41822,62,43,13M8
1010,5232,53,22,86,45M10
12132933,953,4312,4M12
1415353,54,654,0421,6M14
16173945,254,5830,4M16
1819424,55,65,0838,9M18
20214556,45,648,8M20
2223495,57,056,1563,5M22
24255667,756,7792,9M24
2728606,58,357,3113M27
30317079,28170M30

DIN 6908 Conical Spring

din-6908-conical-spring
Nominal Sized1d2S2)hMass (7,85 kg/dm3) per 1000 units, in kgFor thread size
 min. = nominal sizemax.max. = nominal sizemin. As delivered conditionMinimum size after test for permanent set1)  
max.min.
2,253)2,252,3565,700,50,720,610,610,10M2,5
2,75 3)2,752,8576,640,60,850,720,720,15M3
3,23)3,203,3287,640,81,060,920,920,27M3,5
3,63,603,7298,641,01,301,121,120,42M4
4,554,554,671110,571,21,551,351,350,74M5
5,55,505,621413,571,52,602,301,701,53M6
7,47,407,551817,572,03,102,802,243,32M8
9,39,309,452322,482,53,603,302,806,82M10
1111,011,182928,483,04,103,803,4313,3M12
Clearance hole diameter, d1For thread sized2hStSpring force, in N1)Approximate mass (7,85 kg/dm3) per 1 000 units in kg
H12 h14K14 Limit deviations   
6,5M7172,31,5 ± 0.080,33 9302,28

din 137 B - Spring Wave Washers, Form B

Equivalent norms: DIN 137 B; CSN 21733; UNI 8840B;

din-137b-spring-wave
din-137b-spring-wave

Legend:
d1 - Inner diameter
d2 - Outer diameter
S - Washer width
h - unloaded washer height
Makings:
Steel: spring steel
Stainless: A2,A4
Plastic: - 
Non Ferrous: - 
Thread: -
Notes:
Table according to DIN 137:
dimensions in mm

Nominal sizeFor threadd1d2 sh Weight kg/1000pcs
  H14js16 min.max. 
3M33,280,5 ± 0,050,81,60,166
3,5M3,53,780,5 ± 0,050,91,80,154
4M44,390,5 ± 0,05120,193
5M55,3110,5 ± 0,051,12,20,286
6M66,4120,5 ± 0,051,32,60,318
7M77,4140,8 ± 0,061,530,7
8M88,4150,8 ± 0,061,530,762
10M1010,5211 ± 0,072,14,22,04
12M1213241,2 ± 0,072,553,01
14M1415281,6 ± 0,08365,51
16M1617301,6 ± 0,083,26,46,03
18M1819341,6 ± 0,083,36,67,84
20M2021361,6 ± 0,083,77,48,43
22M2223401,8 ± 0,13,97,811,9
24M2425441,8 ± 0,14,18,214,5
27M2728502 ± 0,14,79,421,1
30M3031562,2 ± 0,151029,5
33M3334602,2 ± 0,15,310,633,1
36M3637682,5 ± 0,155,811,650,2

DIN 137 A - Spring washers curved, Form A

Equivalent norms: CSN 21733; UNI 8840A;

din-137a-spring-wave
din-137a-spring-wave

Legend:
d1 - Inner diameter
d2 - Outer diameter
S - Washer width
h - unloaded washer height
Makings:
Steel: spring steel
Stainless: A2,A4
Plastic: - 
Non Ferrous: - 
Thread: -
Notes:
Table according to DIN 137:
dimensions in mm

Nominal sized1d2shWeight kg/1000pcsFor size
 H14js16Nominal sizetol.min.max.  
33,280,5±0,050,81,60,166M3
3,53,780,5±0,050,91,80,154M3,5
44,390,5±0,05120,193M4
55,3110,5±0,051,12,20,286M5
66,4120,5±0,051,32,60,318M6
77,4140,8±0,061,530,7M7
88,4150,8±0,061,530,762M8
1010,5211±0,072,14,22,04M10
1213241,2±0,072,553,01M12
1415281,6±0,08365,51M14
1617301,6±0,083,26,46,03M16
1819341,6±0,083,36,67,84M18
2021361,6±0,083,77,48,43M20
2223401,8±0,13,97,811,9M22
2425441,8±0,14,18,214,5M24
2728502±0,14,79,421,1M27
3031562,2±0,151029,5M30
3334602,2±0,15,310,633,1M33
3637682,5±0,155,811,650,2M36

Belleville Washer as Per DIN 6796

din-6796-international-std

Heavy Duty Belleville Washers As per DIN 6796
Material : 50CrV4 or Spring Steel CK75

NOMINAL BOLT SIZE MMD1 H14 MMD2 H14 MMS3) MMH MAX 1) MMH MIN 2) MMFLATTENING FORCE NRESIDUAL SPRING FORCE N
24)2.250.40.60.5920-
2.5 4)2.760.50.720.611540-
3 4)3.270.60.850.722350-
3.54)3.780.81.060.923160-
44.3911.31.1240501400
55.3111.21.551.3567002300
66.4141.521.794004200
77.4171.752.32137006200
88.41822.62.24172007700
1010.5232.53.22.82750012400
12132933.953.434000018000
1415353.54.654.045500025000
16173945.254.587500034000
1819424.55.85.089500057000
20214556.45.612200073000
2223495.57.056.1515200091000
24255667.756.77175000122000
2728606.58.357.3230000161000
30317079.28280000196000

Heavy Duty Belleville Washers As per DIN 6908
Material : 50CrV4 or Spring Steel CK75

MD1_MIND2_MAXS_MAXS_MINH_MAXH_MIN
2.52.2560.5 0.720.61
32.7570.6 0.850.72
3.53.280.8 1.060.92
43.691 1.31.12
54.55111.2 1.551.35
65.5141.581.422.62.3
76.5171.581.422.352.3
87.4182 3.62.8
109.3232.5 4.13.3
1211293 3.53.8

Heavy Duty Belleville Washer as Per DIN 6796

heavy-duty-belleville-washers-din-6796
heavy-duty-belleville-washers-din-6796
Part No.DimensionsLoad Flat (N)Nominal Bolt Size
 in inchesin mm  
 Dedth (min)Dedith maxh min  
BW-0522040.1970.090.0160.0252.20.40.60.5625M 2
BW-0627050.2360.110.020.02462.70.50.720.61945M 2.5
BW-0732060.2760.130.0240.02873.20.60.850.721320M 3
BW-0837080.3150.150.0310.03683.70.81.060.922410M 3.5
BW-0943100.3540.170.0390.04494.311.31.123770M 4
BW-1153120.4330.210.0470.053115.31.21.551.354580M 5
BW-1464150.5510.250.0590.067146.41.521.78590M 6
BW-1774170.6690.290.0690.079177.41.752.3211300M 7
BW-1884200.7090.330.0790.088188.422.62.2414900M 8
BW-2310250.9060.410.0980.112310.52.53.22.822100M 10
BW-2913301.1420.510.1180.135291333.953.4334100M 12
BW-3515351.3780.590.1380.15935153.54.654.0446000M 14
BW-3917401.5350.670.1570.18391745.254.5859700M 16
BW-4219451.6540.750.1770.242194.55.85.0874400M 18
BW-4521501.7720.830.1970.22452156.45.693200M 20
BW-4923551.9290.910.2170.24249235.57.056.15113700M 22
BW-5625602.2050.980.2360.267562567.756.77131000M 24
BW-6028652.3621.10.2560.28760286.58.357.3154000M 27
BW-7031702.7561.220.2760.315703179.28172000M 30

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