ISO 10243 Springs | McMaster-Carr

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System of Measurement

Hole Diameter

Length

Shaft Diameter

Color

Spring Type

Spring Rate

Compressed Length @ Maximum Load

Load Rating

End Type

Load

1,000 lb. to 1,999 lb.

Deflection @ Maximum Load

Material

Performance

Specifications Met

ANSI/BHMA A156.4 Grade 1

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

RoHS

Compliant

DFARS Specialty Metals

Exempt

Finish

Powder Coated

Export Control Classification Number (ECCN)

REACH

120 Products

Load Rating

Light

Cushion low-force dies, such as those in light tooling jobs

44 products

Medium

General purpose option for dies with moderate force

32 products

Load Rating

Heavy

Sustain frequent cycling in high-force jobs

25 products

Extra Heavy

Endure extremely high forces or high-speed conditions

19 products

Color-Coded Die Springs

With the Raymond color code, you'll always grab the die spring with the right load rating. The chrome-silicon steel is stronger than spring steel and handles repeated stress for longer periods of time. Rely on these springs for high-volume jobs, such as stamping and injection molding. A powder coating prevents rust in wet environments. The closed, ground ends create a flat surface that balances your load, even as it moves.

Metric

Image of Product. Side1 orientation. Die Springs. Color-Coded Die Springs.

Deflection @ Maximum Load—The percentage represents how much a spring compresses from its original length.

				Wire, mm
	For Hole Dia., mm	For Shaft Dia., mm	Lg., mm	Thk.	Wd.	Compressed Lg. @ Max. Load, mm	Deflection @ Max. Load	Max. Load, lb.	Spring Rate, lbf/mm	Material	End Type	Specs. Met		Each
Green (Light Load)



		10	5	25	0.99	1.78	16.2	35%	19	2.2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N11	00000


		10	5	32	0.99	1.78	20.8	35%	21	1.9	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N111	0000
		10	5	38	0.99	1.78	24.7	35%	20	1.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N112	0000
		10	5	44	0.99	1.78	28.6	35%	20	1.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N113	0000
		10	5	51	0.99	1.78	33.1	35%	20	1.1	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N114	0000
		12.5	6	25	1.32	2.36	16.2	35%	35	4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N115	0000
		12.5	6	32	1.32	2.36	20.8	35%	41	3.6	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N116	0000
		12.5	6	38	1.32	2.36	24.7	35%	40	3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N117	0000
		12.5	6	44	1.32	2.36	28.6	35%	41	2.7	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N118	0000
		12.5	6	51	1.32	2.36	33.1	35%	45	2.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N119	0000
		12.5	6	76	1.32	2.36	49.4	35%	42	1.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N12	0000


		16	8	25	1.75	2.77	16.2	35%	46	5.2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N121	0000
		16	8	32	1.75	2.77	20.8	35%	57	5.1	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N122	0000
		16	8	38	1.75	2.77	24.7	35%	57	4.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N123	0000
		16	8	51	1.75	2.77	33.1	35%	62	3.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N124	0000
		16	8	64	1.75	2.77	41.6	35%	53	2.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N125	0000
		20	10	25	1.91	4.19	16.2	35%	105	13	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N126	0000
		20	10	32	1.91	4.19	20.8	35%	110	10	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N127	0000
		20	10	38	1.91	4.19	24.7	35%	99	7.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N128	0000
		20	10	44	1.91	4.19	28.6	35%	100	6.7	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N129	0000
		20	10	51	1.91	4.19	33.1	35%	98	5.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N13	0000


		20	10	64	1.91	4.19	41.6	35%	100	4.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N131	0000
		20	10	76	1.91	4.19	49.4	35%	95	3.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N132	0000
		20	10	102	1.91	4.19	66.3	35%	96	2.6	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N133	00000
		20	10	152	1.91	4.19	98.8	35%	89	1.6	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N134	00000
		25	12.5	25	2.54	5.46	16.2	35%	195	22	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N135	0000
		25	12.5	32	2.54	5.46	20.8	35%	200	18	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N136	0000
		25	12.5	38	2.54	5.46	24.7	35%	185	14	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N137	0000
		25	12.5	44	2.54	5.46	28.6	35%	180	12	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N138	0000
		25	12.5	51	2.54	5.46	33.1	35%	175	9.8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N139	0000
		25	12.5	64	2.54	5.46	41.6	35%	175	7.9	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N14	00000


		25	12.5	76	2.54	5.46	49.4	35%	165	6.2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N141	00000
		32	16	38	2.92	7.24	24.7	35%	280	21	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N142	00000
		32	16	51	2.92	7.24	33.1	35%	265	15	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N143	00000
		32	16	76	2.92	7.24	49.4	35%	260	9.8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N144	00000
		40	20	51	3.43	8.76	33.1	35%	365	20	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N145	00000
		40	20	64	3.43	8.76	41.6	35%	365	16	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N146	00000
		40	20	76	3.43	8.76	49.4	35%	375	14	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N147	00000
		40	20	127	3.43	8.76	82.5	35%	365	8.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N148	00000
		40	20	152	3.43	8.76	98.8	35%	330	6.2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N149	00000
		50	25	64	4.95	11.89	41.6	35%	785	35	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N15	00000


		50	25	76	4.95	11.89	49.4	35%	745	28	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N151	00000
		63	38	76	7.75	11.51	49.4	35%	1,130	42	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N152	00000
		63	38	89	7.75	11.51	57.8	35%	1,100	35	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N153	00000


		Blue (Medium Load)



				10	5	25	1.17	1.85	17.5	30%	26	3.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N154	0000


10	5			32	1.17	1.85	22.4	30%	28	2.9	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N155	0000
10	5			38	1.17	1.85	26.6	30%	30	2.6	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N156	0000
10	5			44	1.17	1.85	30.8	30%	30	2.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N157	0000
10	5			51	1.17	1.85	35.7	30%	30	2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N158	0000
12.5	6			25	1.55	2.39	17.5	30%	50	6.7	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N159	0000
12.5	6			32	1.55	2.39	22.4	30%	53	5.5	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N16	0000
12.5	6			38	1.55	2.39	26.6	30%	54	4.8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N161	0000
12.5	6			44	1.55	2.39	30.8	30%	54	4.1	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N162	0000
12.5	6			51	1.55	2.39	35.7	30%	53	3.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N163	0000
16	8			25	2.06	3.12	17.5	30%	83	11	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N164	0000


16	8			32	2.06	3.12	22.4	30%	80	8.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N165	0000
16	8			38	2.06	3.12	26.6	30%	86	7.6	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N166	0000
16	8			51	2.06	3.12	35.7	30%	90	5.9	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N167	0000
20	10			25	2.36	3.96	17.5	30%	165	22	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N168	0000
20	10			32	2.36	3.96	22.4	30%	155	16	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N169	0000
20	10			38	2.36	3.96	26.6	30%	140	13	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N17	0000
20	10			44	2.36	3.96	30.8	30%	140	11	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N171	0000
20	10			51	2.36	3.96	35.7	30%	140	9.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N172	0000
20	10			76	2.36	3.96	53.2	30%	125	5.6	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N173	00000
25	12.5			25	2.92	5.54	17.5	30%	245	33	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N174	0000


25	12.5			32	2.92	5.54	22.4	30%	250	26	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N175	0000
25	12.5			38	2.92	5.54	26.6	30%	235	20	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N176	0000
25	12.5			51	2.92	5.54	35.7	30%	235	15	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N177	00000
25	12.5			76	2.92	5.54	53.2	30%	220	9.7	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N178	00000
32	16			38	3.96	7.14	26.6	30%	470	41	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N179	00000
32	16			51	3.96	7.14	35.7	30%	460	30	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N18	00000
40	20			51	4.75	7.92	35.7	30%	620	40	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N181	00000
40	20			64	4.75	7.92	44.8	30%	600	31	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N182	00000
40	20			76	4.75	7.92	53.2	30%	550	24	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N183	00000
40	20			89	4.75	7.92	62.3	30%	540	20	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N184	00000


50	25			64	5.72	11.10	44.8	30%	900	46	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N185	00000


Red (Heavy Load)



				10	5	25	1.37	1.83	18.7	25%	31	4.9	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N186	0000


				10	5	32	1.37	1.83	24	25%	31	3.9	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N187	0000
				10	5	38	1.37	1.83	28.5	25%	36	3.8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N188	0000
				10	5	51	1.37	1.83	38.2	25%	36	2.8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N189	0000
				12.5	6	25	1.83	2.41	18.7	25%	59	9.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N19	0000
				12.5	6	32	1.83	2.41	24	25%	59	7.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N191	0000
				12.5	6	51	1.83	2.41	38.2	25%	56	4.4	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N192	0000
				16	8	25	2.36	3.18	18.7	25%	105	17	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N193	0000
				16	8	32	2.36	3.18	24	25%	94	12	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N194	0000
				16	8	51	2.36	3.18	38.2	25%	105	8.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N195	0000
				20	10	25	3.18	4.19	18.7	25%	300	48	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N196	0000


				20	10	32	3.18	4.19	24	25%	300	37	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N197	0000
		20		10	38	3.18	4.19	28.5	25%	275	29	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N198	0000
		20	10	51	3.18	4.19	38.2	25%	265	21	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N199	0000
		20	10	76	3.18	4.19	57	25%	255	13	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N21	00000
		25	12.5	25	4.01	5.61	18.7	25%	525	84	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N211	0000
		25	12.5	32	4.01	5.61	24	25%	530	66	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N212	00000
		25	12.5	38	4.01	5.61	28.5	25%	465	49	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N213	0000
		25	12.5	51	4.01	5.61	38.2	25%	445	35	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N214	00000
		25	12.5	76	4.01	5.61	57	25%	420	22	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N215	00000
		32	16	38	5.08	7.26	28.5	25%	825	87	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N216	00000


		32	16	51	5.08	7.26	38.2	25%	795	61	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N217	00000
		32	16	76	5.08	7.26	57	25%	730	38	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N218	00000
		40	20	51	6.60	8.64	38.2	25%	1,000	78	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N219	00000
		40	20	64	6.60	8.64	48	25%	965	60	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N22	00000


		Yellow (Extra-Heavy Load)



				10	5	25	1.50	2.03	20	20%	41	8.2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N221	0000


				10	5	32	1.50	2.03	25.6	20%	40	6.2	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N222	0000
				10	5	38	1.50	2.03	30.4	20%	40	5.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N223	0000
				12.5	6	25	2.13	2.46	20	20%	65	13	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N224	0000
				12.5	6	32	2.13	2.46	25.6	20%	63	9.8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N225	0000
				12.5	6	38	2.13	2.46	30.4	20%	61	8	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N226	0000
				16	8	25	2.79	3.20	20	20%	130	26	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N227	0000
				16	8	38	2.79	3.20	30.4	20%	120	16	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N228	0000
				16	8	51	2.79	3.20	40.8	20%	115	12	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N229	0000
				20	10	25	4.09	4.06	20	20%	325	65	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N23	0000
				20	10	38	4.09	4.06	30.4	20%	300	39	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N231	0000


				20	10	51	4.09	4.06	40.8	20%	290	28	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N232	00000
				20	10	76	4.09	4.06	60.8	20%	275	18	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N233	00000
				25	12.5	38	4.95	5.49	30.4	20%	590	77	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N234	00000
				25	12.5	51	4.95	5.49	40.8	20%	475	46	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N235	00000
				25	12.5	76	4.95	5.49	60.8	20%	445	29	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N236	00000
				32	16	38	6.20	7.32	30.4	20%	900	120	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N237	00000
				32	16	76	6.20	7.32	60.8	20%	745	49	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N238	00000
				40	20	64	8.13	8.71	51.2	20%	1,400	110	Chrome Silicon Steel	Closed and Ground	ISO 10243	1804N239	00000