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HEFTY Die Springs

HEFTY™ Die Springs — Heavy-Duty Stock, Ready to Ship Springs

Lee Spring's HEFTY™ Die Springs are heavy-duty round wire compression springs engineered for high-stress, high-load applications including stamping and forming dies, industrial presses, and heavy machinery. Available in five force classes — Medium Duty, Heavy Duty, Extra Heavy Duty, and beyond — and stocked in both music wire and chrome-silicon steel for elevated temperature resistance. All HEFTY™ Die Springs are held in active inventory for immediate shipment, with free standard ground shipping options and a Certificate of Compliance included on every order. Learn more about HEFTY™ Die Spring and How to Measure a Compression Spring.

Engineering Notes & Tolerances
Spring Materials, Specifications & Data
Spring Coatings and Surface Treatments
Try our Spring Calculator

Results 490 Springs
Material
LHL 375A 7B
0.881
0.347
8.81
0.953
0.375
9.53
0.478
0.188
4.78
12.7
5
127
1964.4
196.44
1.964
0.1964
11
19.26
1.926
5.994
2.36
59.94
0.132
0.052
1.32
MW
LHL 375D 03
0.881
0.347
8.81
0.953
0.375
9.53
0.478
0.188
4.78
3.81
1.5
38.1
25894.1
2589.41
25.894
2.5894
145
253.94
25.394
2.591
1.02
25.91
0.18
0.071
1.8
MW
LHL 375C 03
0.884
0.348
8.84
0.953
0.375
9.53
0.478
0.188
4.78
3.81
1.5
38.1
17143.7
1714.37
17.144
1.7144
96
168.13
16.813
2.337
0.92
23.37
0.165
0.065
1.65
MW
LHL 375A 07
0.889
0.35
8.89
0.953
0.375
9.53
0.478
0.188
4.78
7.62
3
76.2
3214.4
321.44
3.214
0.3214
18
31.52
3.152
3.632
1.43
36.32
0.132
0.052
1.32
MW
LHL 375D 06
0.894
0.352
8.94
0.953
0.375
9.53
0.478
0.188
4.78
6.35
2.5
63.5
14286.4
1428.64
14.286
1.4286
80
140.11
14.011
4.191
1.65
41.91
0.18
0.071
1.8
MW
LHL 375D 07
0.897
0.353
8.97
0.953
0.375
9.53
0.478
0.188
4.78
7.62
3
76.2
11607.7
1160.77
11.608
1.1608
65
113.84
11.384
4.978
1.96
49.78
0.18
0.071
1.8
MW
LHL 375D 08
0.897
0.353
8.97
0.953
0.375
9.53
0.478
0.188
4.78
15.24
6
152.4
5714.6
571.46
5.715
0.5715
32
56.04
5.604
9.779
3.85
97.79
0.18
0.071
1.8
MW
LHL 375D 09
0.897
0.353
8.97
0.953
0.375
9.53
0.478
0.188
4.78
17.78
7
177.8
5357.4
535.74
5.357
0.5357
30
52.54
5.254
12.192
4.8
121.92
0.18
0.071
1.8
MW
LHL 375D 10
0.897
0.353
8.97
0.953
0.375
9.53
0.478
0.188
4.78
20.32
8
203.2
4643.1
464.31
4.643
0.4643
26
45.53
4.553
13.868
5.46
138.68
0.18
0.071
1.8
MW
LHL 375D 12
0.897
0.353
8.97
0.953
0.375
9.53
0.478
0.188
4.78
30.48
12
304.8
2785.8
278.58
2.786
0.2786
15.6
27.32
2.732
21.394
8.423
213.94
0.18
0.071
1.8
MW
LHL 375D 04
0.899
0.354
8.99
0.953
0.375
9.53
0.478
0.188
4.78
4.445
1.75
44.45
20536.7
2053.67
20.537
2.0537
115
201.40
20.14
2.946
1.16
29.46
0.18
0.071
1.8
MW
LHL 375C 07
0.902
0.355
9.02
0.953
0.375
9.53
0.478
0.188
4.78
7.62
3
76.2
7500.4
750.04
7.5
0.75
42
73.56
7.356
4.572
1.8
45.72
0.165
0.065
1.65
MW
LHL 375D 7B
0.902
0.355
9.02
0.953
0.375
9.53
0.478
0.188
4.78
12.7
5
127
7321.8
732.18
7.322
0.7322
41
71.80
7.18
8.636
3.4
86.36
0.18
0.071
1.8
MW
LHL 375D 7A
0.902
0.355
9.02
0.953
0.375
9.53
0.478
0.188
4.78
10.16
4
101.6
9196.9
919.69
9.197
0.9197
51.5
90.19
9.019
6.706
2.64
67.06
0.18
0.071
1.8
MW
LHL 375C 06
0.902
0.355
9.02
0.953
0.375
9.53
0.478
0.188
4.78
6.35
2.5
63.5
10714.8
1071.48
10.715
1.0715
60
105.08
10.508
3.886
1.53
38.86
0.17
0.067
1.7
MW
LHL 375C 7B
0.902
0.355
9.02
0.953
0.375
9.53
0.478
0.188
4.78
12.7
5
127
5357.4
535.74
5.357
0.5357
30
52.54
5.254
8.179
3.22
81.79
0.17
0.067
1.7
MW
LHL 375C 7A
0.902
0.355
9.02
0.953
0.375
9.53
0.478
0.188
4.78
10.16
4
101.6
6786
678.6
6.786
0.6786
38
66.55
6.655
6.553
2.58
65.53
0.17
0.067
1.7
MW
LHL 500B 03
1.156
0.455
11.56
1.27
0.5
12.7
0.714
0.281
7.14
3.81
1.5
38.1
21429.6
2142.96
21.43
2.143
120
210.16
21.016
2.337
0.92
23.37
0.203
0.08
2.03
MW
LHL 500A 04
1.158
0.456
11.58
1.27
0.5
12.7
0.714
0.281
7.14
4.445
1.75
44.45
12143.4
1214.34
12.143
1.2143
68
119.09
11.909
2.21
0.87
22.1
0.183
0.072
1.83
MW
LHL 500A 11
1.163
0.458
11.63
1.27
0.5
12.7
0.714
0.281
7.14
16.51
6.5
165.1
2857.3
285.73
2.857
0.2857
16
28.02
2.802
8.077
3.18
80.77
0.183
0.072
1.83
MW

Reference

Click on the thumbnail to enlarge image.
Compression Spring
Compression Spring
Hole Diameter
Hole Diameter
Max Rod Diameter
Max Rod Diameter
Solid Height
Solid Height
Free Length
Free Length
Outside Diameter
Outside Diameter
Inside Diameter
Inside Diameter
Wire Diameter
Wire Diameter
Load Reference
Load Reference
HEFTY™ Die Springs
HEFTY™ Die Springs
LeeP™ Plastic Composite Springs
LeeP™ Plastic Composite Springs

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on all Music Wire Stock Springs

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LeeSpring

Lee Spring, 140 58th Street, Brooklyn, NY 11220 | 888-777-4647
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