Extra-Heavy Duty (Green) Die Springs - Size, Deflection, and Load Chart
    For Optimum Life For Long Life Max. Operating Def. Max. Deflection*
Hole
(A)		 Rod
(B)		 Free
Length
(C)		 Part
Number		 Box
Qty.		 Load @
0.1 Def.
(lbs)		 Load
(lbs)		 Deflection
(15% of
Length)		 Load
(lbs)		 Deflection
(17% of
Length)		 Load
(lbs)		 Deflection
(20% of
Length)		 Load
(lbs)		 Deflection
(25% of
Length)
3/8 3/16 1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
12 		344-0604
344-0605
344-0606
344-0607
344-0608
344-0610
344-0612
344-0648 		200
200
100
100
100
100
100
50 		22.0
16.0
12.5
11.5
9.0
7.0
6.5
1.5 		33.0
30.0
28.1
30.2
27.0
26.3
29.3
27.0 		0.15
0.19
0.23
0.26
0.30
0.38
0.45
1.80 		37.4
34.0
31.9
34.2
30.6
29.8
33.2
30.6 		0.17
0.21
0.26
0.30
0.34
0.43
0.51
2.04 		44.0
40.0
37.5
40.3
36.0
35.0
39.0
36.0 		0.20
0.25
0.30
0.35
0.40
0.50
0.60
2.40 		55.0
50.0
46.9
50.3
45.0
43.8
48.8
45.0 		0.25
0.31
0.38
0.44
0.50
0.63
0.75
3.00
1/2 9/32 1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
3-1/2
12		 344-0804
344-0805
344-0806
344-0807
344-0808
344-0810
344-0812
344-0814
344-0848		 100
100
100
100
100
50
50
50
50		 32.0
24.0
20.0
17.0
14.0
11.5
9.0
8.0
2.5		 48.0
45.0
45.0
44.6
42.0
43.1
40.5
42.0
45.0		 0.15
0.19
0.23
0.26
0.30
0.38
0.45
0.53
1.80		 54.4
51.0
51.0
50.6
47.6
48.9
45.9
47.6
51.0		 0.17
0.21
0.26
0.30
0.34
0.43
0.51
0.60
2.04		 64.0
60.0
60.0
59.5
56.0
57.5
54.0
56.0
60.0		 0.20
0.25
0.30
0.35
0.40
0.50
0.60
0.70
2.40		 80.0
75.0
75.0
74.4
70.0
71.9
67.5
70.0
75.0		 0.25
0.31
0.38
0.44
0.50
0.63
0.75
0.88
3.00
5/8 11/32 1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
3-1/2
4
12 		344-1004
344-1005
344-1006
344-1007
344-1008
344-1010
344-1012
344-1014
344-1016
344-1048 		50
50
50
50
50
50
50
50
50
50 		63.0
47.0
38.0
32.0
29.0
22.0
19.0
16.0
13.5
4.5 		94.5
88.1
85.5
84.0
87.0
82.5
85.5
84.0
81.0
81.0 		0.15
0.19
0.23
0.26
0.30
0.38
0.45
0.53
0.60
1.80 		107.1
99.9
96.9
95.2
98.6
93.5
96.9
95.2
91.8
91.8 		0.17
0.21
0.26
0.30
0.34
0.43
0.51
0.60
0.68
2.04 		126.0
117.5
114.0
112.0
116.0
110.0
114.0
112.0
108.0
108.0 		0.20
0.25
0.30
0.35
0.40
0.50
0.60
0.70
0.80
2.40 		157.5
146.9
142.5
140.0
145.0
137.5
142.5
140.0
135.0
135.0 		0.25
0.31
0.38
0.44
0.50
0.63
0.75
0.88
1.00
3.00
3/4 3/8 1
1-1/4
1-1/2
1-3/4
2
2-1/2
3
3-1/2
4
4-1/2
5
5-1/2
6
12 		344-1204
344-1205
344-1206
344-1207
344-1208
344-1210
344-1212
344-1214
344-1216
344-1218
344-1220
344-1222
344-1224
344-1248 		50
50
50
50
50
50
50
50
50
50
50
50
50
50 		140.0
110.0
89.0
75.0
68.0
50.0
40.5
34.5
30.0
26.5
23.5
21.5
19.5
9.5 		210.0
206.3
200.3
196.9
204.0
187.5
182.3
181.1
180.0
178.9
176.3
177.4
175.5
171.0 		0.15
0.19
0.23
0.26
0.30
0.38
0.45
0.53
0.60
0.68
0.75
0.83
0.90
1.80 		238.0
233.8
227.0
223.1
231.2
212.5
206.6
205.3
204.0
202.7
199.8
201.0
198.9
193.8 		0.17
0.21
0.26
0.30
0.34
0.43
0.51
0.60
0.68
0.77
0.85
0.94
1.02
2.04 		280.0
275.0
267.0
262.5
272.0
250.0
243.0
241.5
240.0
238.5
235.0
236.5
234.0
228.0 		0.20
0.25
0.30
0.35
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.10
1.20
2.40 		350.0
343.8
333.8
328.1
340.0
312.5
303.8
301.9
300.0
298.1
293.8
295.6
292.5
285.0 		0.25
0.31
0.38
0.44
0.50
0.63
0.75
0.88
1.00
1.13
1.25
1.38
1.50
3.00
1 1/2 1-1/2
2
2-1/2
3
3-1/2
4
4-1/2
5
6
12 		344-1606
344-1608
344-1610
344-1612
344-1614
344-1616
344-1618
344-1620
344-1624
344-1648 		50
50
50
25
25
25
25
25
25
25 		160.0
116.0
89.6
73.6
62.4
55.2
48.8
43.2
36.0
17.6 		360.0
348.0
336.0
331.2
327.6
331.2
329.4
324.0
324.0
316.8 		0.23
0.30
0.38
0.45
0.53
0.60
0.68
0.75
0.90
1.80 		408.0
394.4
380.8
375.4
371.3
375.4
373.3
367.2
367.2
359.0 		0.26
0.34
0.43
0.51
0.60
0.68
0.77
0.85
1.02
2.04 		480.0
464.0
448.0
441.6
436.8
441.6
439.2
432.0
432.0
422.4 		0.30
0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.20
2.40 		600.0
580.0
560.0
552.0
546.0
552.0
549.0
540.0
540.0
528.0 		0.38
0.50
0.63
0.75
0.88
1.00
1.13
1.25
1.50
3.00
1-1/4 5/8 2
2-1/2
3
3-1/2
4
4-1/2
5
6
8
10
12		 344-2008
344-2010
344-2012
344-2014
344-2016
344-2018
344-2020
344-2024
344-2032
344-2040
344-2048		 25
25
25
25
25
25
25
25
25
25
25		 192.0
144.0
118.4
100.8
84.0
78.4
68.0
56.0
41.6
33.6
26.4		 576.0
540.0
532.8
529.2
504.0
529.2
510.0
504.0
499.2
504.0
475.2		 0.30
0.38
0.45
0.53
0.60
0.68
0.75
0.90
1.20
1.50
1.80		 652.8
612.0
603.8
599.8
571.2
599.8
578.0
571.2
565.8
571.2
538.6		 0.34
0.43
0.51
0.60
0.68
0.77
0.85
1.02
1.36
1.70
2.04		 768.0
720.0
710.4
705.6
672.0
705.6
680.0
672.0
665.6
672.0
633.6		 0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.20
1.60
2.00
2.40		 960.0
900.0
888.0
882.0
840.0
882.0
850.0
840.0
832.0
840.0
792.0		 0.50
0.63
0.75
0.88
1.00
1.13
1.25
1.50
2.00
2.50
3.00
1-1/2 3/4 2
2-1/2
3
3-1/2
4
4-1/2
5
6
8
10
12		 344-2408
344-2410
344-2412
344-2414
344-2416
344-2418
344-2420
344-2424
344-2432
344-2440
344-2448		 25
25
25
25
25
25
25
25
25
25
25		 376.0
294.4
231.2
196.0
171.2
148.0
136.0
110.4
80.8
67.2
54.4		 1128.0
1104.0
1040.4
1029.0
1027.2
999.0
1020.0
993.6
969.6
1008.0
979.2		 0.30
0.38
0.45
0.53
0.60
0.68
0.75
0.90
1.20
1.50
1.80		 1278.4
1251.2
1179.1
1166.2
1164.2
1132.2
1156.0
1126.1
1098.9
1142.4
1109.8		 0.34
0.43
0.51
0.60
0.68
0.77
0.85
1.02
1.36
1.70
2.04		 1504.0
1472.0
1387.2
1372.0
1369.6
1332.0
1360.0
1324.8
1292.8
1344.0
1305.6		 0.40
0.50
0.60
0.70
0.80
0.90
1.00
1.20
1.60
2.00
2.40		 1880.0
1840.0
1734.0
1715.0
1712.0
1665.0
1700.0
1656.0
1616.0
1680.0
1632.0		 0.50
0.63
0.75
0.88
1.00
1.13
1.25
1.50
2.00
2.50
3.00
2 1 2-1/2
3
3-1/2
4
4-1/2
5
6
8
10
12 		344-3210
344-3212
344-3214
344-3216
344-3218
344-3220
344-3224
344-3232
344-3240
344-3248 		25
25
25
25
25
25
25
10
10
10 		381.6
312.0
254.4
220.0
188.8
172.8
141.6
100.0
84.0
71.2 		1431.0
1404.0
1335.6
1320.0
1274.4
1296.0
1274.4
1200.0
1260.0
1281.6 		0.38
0.45
0.53
0.60
0.68
0.75
0.90
1.20
1.50
1.80 		1621.8
1591.2
1513.7
1496.0
1444.3
1468.8
1444.3
1360.0
1428.0
1452.5 		0.43
0.51
0.60
0.68
0.77
0.85
1.02
1.36
1.70
2.04 		1908.0
1872.0
1780.8
1760.0
1699.2
1728.0
1699.2
1600.0
1680.0
1708.8 		0.50
0.60
0.70
0.80
0.90
1.00
1.20
1.60
2.00
2.40 		2385.0
2340.0
2226.0
2200.0
2124.0
2160.0
2124.0
2000.0
2100.0
2136.0 		0.63
0.75
0.88
1.00
1.13
1.25
1.50
2.00
2.50
3.00
Hole
(A)		 Rod
(B)		 Free
Length
(C)		 Part
Number		   Load @
0.1 Def.
(lbs)		 Load
(lbs)		 Deflection
(15% of
Length)		 Load
(lbs)		 Deflection
(17% of
Length)		 Load
(lbs)		 Deflection
(20% of
Length)		 Load
(lbs)		 Deflection
(25% of
Length)
  For Optimum Life For Long Life Max. Operating Def. Max. Deflection*
* Theoretical limit. Not intended for operational use.