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Home-->Technical |
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High Duty Safety Spring Washers
High duty safety spring washers are designed for
use as loose washers over screws and bolts. Manufactured
to DIN 6796 they are designed to be used for medium
or high strength screw or bolt assemblies.
The high supporting load and spring return make the
HDS series extremely effective where bolt tension
may be subject to relaxation due to such factors as
: smoothing out of wear parts, creep, relaxation,
thermal expansion or contraction, or compression set
of gaskets. The HDS series multiplies the elastic
action of the screw. They are an effective replacement
for the time honored, but obsolete and ineffective,
lock washer / flat washer combinations.
Since the HDS series are disc springs they can be
stacked in series and/or in parallel. Series stacking
increases the available deflection of the spring stack.
Parallel stacking increases the spring force. The
desired installation is as near flat as possible.
When nearing flat, the tightening torque increases
sharply, indicating the proper bolt tension without
a torque wrench.
HDS washers, hardened (43-48 Rc), are made of Carbon
Spring Steel, larger sizes having machined OD and
ID. Other materials are available on request. HDS
washers are delivered with blank, slightly oiled surfaces.
Phosphate and Zinc plating on request. |
| Diameter |
Bolt Size Inch |
OD Inch |
ID |
t |
H max * |
H min # |
F (lb) |
OD mm |
ID |
t |
H max * |
H min # |
F (N) + |
| M2 |
|
0.197 |
0.087 |
0.016 |
0.024 |
0.020 |
140 |
5 |
2.2 |
0.40 |
0.60 |
0.50 |
630 |
| M2.5 |
|
0.236 |
0.106 |
0.020 |
0.028 |
0.024 |
210 |
6 |
2.7 |
0.50 |
0.72 |
0.61 |
950 |
| M3 |
1/8 .#5 |
0.276 |
0.126 |
0.024 |
0.033 |
0.028 |
300 |
7 |
3.2 |
0.60 |
0.85 |
0.72 |
1,320 |
| M3.5 |
.#6 |
0.315 |
0.146 |
0.031 |
0.042 |
0.036 |
540 |
8 |
3.7 |
0.80 |
1.06 |
0.92 |
2,400 |
| M4 |
5/32.#8 |
0.354 |
0.169 |
0.039 |
0.051 |
0.044 |
850 |
9 |
4.3 |
1.00 |
1.30 |
1.12 |
3,800 |
| M5 |
3/16.#10 |
0.433 |
0.209 |
0.047 |
0.061 |
0.053 |
1,230 |
11 |
5.3 |
1.20 |
1.55 |
1.35 |
5,500 |
| M6 |
1/4 |
0.551 |
0.252 |
0.059 |
0.079 |
0.067 |
1,930 |
14 |
6.4 |
1.50 |
2.00 |
1.70 |
8,600 |
| M7 |
|
0.669 |
0.291 |
0.069 |
0.091 |
0.079 |
2,540 |
17 |
7.4 |
1.75 |
2.30 |
2.00 |
11,300 |
| M8 |
5/16 |
0.709 |
0.331 |
0.079 |
0.102 |
0.088 |
3,360 |
18 |
8.4 |
2.00 |
2.60 |
2.24 |
14,900 |
| M10 |
3/8 |
0.906 |
0.413 |
0.098 |
0.126 |
0.110 |
4,970 |
23 |
10.5 |
2.50 |
3.20 |
2.80 |
22,100 |
| M12 |
1/2 |
1.142 |
0.512 |
0.118 |
0.156 |
0.135 |
7,670 |
29 |
13.0 |
3.00 |
3.95 |
3.43 |
34,100 |
| M14 |
9/16 |
1.378 |
0.591 |
0.138 |
0.183 |
0.159 |
10,340 |
35 |
15.0 |
3.50 |
4.65 |
4.04 |
46,000 |
| M16 |
5/8 |
1.535 |
0.669 |
0.157 |
0.207 |
0.180 |
13,400 |
39 |
17.0 |
4.00 |
5.25 |
4.58 |
59,700 |
| M18 |
|
1.653 |
0.748 |
0.177 |
0.228 |
0.200 |
16,700 |
42 |
19.0 |
4.50 |
5.80 |
5.08 |
74,400 |
| M20 |
3/4 |
1.772 |
0.827 |
0.197 |
0.252 |
0.220 |
21,000 |
45 |
21.0 |
5.00 |
6.40 |
5.60 |
93,200 |
| M22 |
7/8 |
1.929 |
0.906 |
0.217 |
0.278 |
0.242 |
25,600 |
49 |
23.0 |
5.50 |
7.05 |
6.15 |
114,000 |
| M24 |
|
2.205 |
0.984 |
0.236 |
0.305 |
0.267 |
29,400 |
56 |
25.0 |
6.00 |
7.75 |
6.77 |
131,000 |
| M27 |
1 |
2.362 |
1.102 |
0.256 |
0.329 |
0.287 |
34,600 |
60 |
28.0 |
6.50 |
8.35 |
7.30 |
154,000 |
| M30 |
1 1/8 |
2.756 |
1.220 |
0.276 |
0.362 |
0.315 |
38,700 |
70 |
31.0 |
7.00 |
9.20 |
8.00 |
172,000 |
FMP Part Number = W096-Diameter-0000
(Bare Steel)
FMP Part Number = W096-Diameter-0000-ZN (Zinc Plated)
( * )Overall height before set out
( # )Overall height after set out
( + )Approx. force to flatten. Twice calculated
force at deflection Hmin - S |
*All information is strictly informative
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Contact
us |
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Company Name: Hengsin Industrial Co.,Ltd.
Contact Person: Martin Wang.
Address: 310-5-#55, Zhanongkou Xincun, Jianggan District,Hangzhou,China 310004
Zip: 310004
Tel:86-571-82760351
Mobile:86-131-75103386
Fax:86-571-86973903
Email:sales@fasteners.cc
Email2:Martinwangke@yahoo.com.cn
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