9" Springs | McMaster-Carr

The farther you stretch these springs, the harder they pull to bring the two ends back together. They're commonly used to tension cable, return an air cylinder to its starting point, or hold a door closed.

Loop End—The most secure attachment method. With fully closed loops, there's no risk of slipping off.

Hook End—Hook into closed holes, such as hanger bolt eyes. These springs work best when kept under tension, as they're more likely to slip off than loop-end springs when tension is released. Also known as machine hook ends.

Spring Steel—Strong and resilient, but best suited for dry environments since moisture will cause these springs to rust.

Corrosion-Resistant 302 Stainless Steel—Won’t corrode from exposure to moisture and mild chemicals, including ammonia often found in cleaning solutions. These springs are easier to extend than steel, but can’t handle as high a load.

Highly Corrosion-Resistant 316 Stainless Steel—Our most corrosion-resistant stainless steel springs won't degrade when exposed to salt water and harsh chemicals. They're easier to extend than steel, but can’t handle as high a load.

Minimum Load—The amount of force required to start extending the spring.

Maximum Load—The amount of force required to fully extend the spring.

					Load, lb.
	Lg.	OD	Wire Dia.	Extended Lg. @ Max. Load	Min.	Max.	Spring Rate, lbf/in	Pkg. Qty.		Pkg.
Loop End







				Spring Steel

				9"	1"	0.095"	21.96"	2.7	30	2.1	1	5108N771	000000


				9"	1"	0.105"	21"	4	46	3.6	1	9654K687	0000
				9"	1"	0.115"	17.51"	4.9	54.3	5.8	1	5108N794	00000
				9"	1"	0.125"	15.84"	6.11	67.87	9	1	5108N807	00000
				9"	1"	0.135"	15"	8	89	14	1	9654K688	00000
				9"	1"	0.148"	13.6"	10	114	23	1	9654K709	00000
				9"	1.75"	0.148"	22.33"	5.79	64.33	4.4	1	5108N907	00000
				9"	1.75"	0.177"	17.61"	9.5	105.51	11.2	1	5108N915	00000
				9"	1.75"	0.207"	15.3"	15	174	25	1	9654K856	00000
				9"	2"	0.177"	21"	8	102	7.9	1	9654K929	00000
				9"	2"	0.207"	16.9"	13	153	18	1	9654K985	00000




						Corrosion-Resistant 302 Stainless Steel

						9"	1"	0.095"	21.96"	2.25	24.99	1.75	1	7749N924	00000


						9"	1"	0.105"	19.73"	3.17	35.19	3	1	7749N925	00000
						9"	1"	0.115"	17.51"	4.08	45.23	4.83	1	7749N926	00000
						9"	1"	0.125"	15.84"	5.09	56.54	7.5	1	7749N927	00000
						9"	1"	0.148"	13.35"	8.06	89.61	18.74	1	7749N929	00000
						9"	1.75"	0.148"	22.33"	4.82	53.59	3.67	1	7749N93	00000
						9"	2"	0.207"	16.29"	10.73	119.22	14.91	1	7749N934	00000




								Highly Corrosion-Resistant 316 Stainless Steel

								9"	1"	0.095"	16.38"	2.25	15.16	1.75	1	4992N854	00000


								9"	1"	0.115"	13.6"	4.08	26.29	4.83	1	4992N856	00000
								9"	1"	0.125"	12.77"	5.09	33.36	7.5	1	4992N857	00000
								9"	1"	0.135"	12.09"	6.3	41.54	11.41	1	4992N858	00000
								9"	1"	0.148"	11.44"	8.06	53.88	18.74	1	4992N859	00000
								9"	1.75"	0.148"	15.5"	4.82	28.65	3.67	1	4992N86	00000
								9"	1.75"	0.177"	13.14"	7.91	46.58	9.33	1	4992N861	00000
								9"	1.75"	0.207"	11.76"	12.15	70.59	21.16	1	4992N862	00000


								Hook End







												Spring Steel

9"	1"											0.095"	21.96"	2.7	30	2.1	1	5667N237	00000


9"	1"											0.105"	19.73"	3.8	42.25	3.6	1	5667N249	00000
9"	1"	0.115"										17.51"	4.9	54.3	5.8	1	5667N262	00000
9"	1"	0.125"	15.84"									6.11	67.87	9	1	5667N275	00000
9"	1"	0.135"	14.59"									7.56	83.98	13.7	1	5667N288	00000
9"	1"	0.148"	13.35"									9.68	107.57	22.5	1	5667N301	00000
9"	1.75"	0.148"	22.33"									5.79	64.33	4.4	1	5667N395	00000
9"	1.75"	0.177"	17.61"									9.5	105.51	11.2	1	5667N403	00000
9"	1.75"	0.207"	14.81"									14.59	162.17	25.4	1	5667N411	00000
9"	2"	0.177"	19.67"									8.37	92.95	7.9	1	5667N418	00000
9"	2"	0.207"	16.29"									12.88	143.12	17.9	1	5667N426	00000




		Corrosion-Resistant 302 Stainless Steel

		9"	1"									0.095"	21.96"	2.25	24.99	1.75	1	1942N905	00000


		9"	1"									0.105"	19.73"	3.17	35.19	3	1	1942N918	00000
		9"	1"									0.115"	17.51"	4.08	45.23	4.83	1	1942N931	00000
		9"	1"	0.125"								15.84"	5.09	56.54	7.5	1	1942N944	00000
		9"	1"	0.135"	14.59"							6.3	69.96	11.41	1	1942N957	00000
		9"	1"	0.148"	13.35"							8.06	89.61	18.74	1	1942N97	00000
		9"	1.75"	0.148"	22.33"							4.82	53.59	3.67	1	8897N165	00000
		9"	1.75"	0.177"	17.61"							7.91	87.89	9.33	1	8897N173	00000
		9"	1.75"	0.207"	14.81"							12.15	135.09	21.16	1	8897N181	00000
		9"	2"	0.207"	16.29"							10.73	119.22	14.91	1	8897N196	00000

Extra-Stretch Extension Springs

Stretch up to three times their original length with lasting elasticity. These latex rubber springs extend much farther than traditional extension springs, tie downs, and shock cords. Plus, unlike metal springs, they keep their elasticity even after repeated use. All have a non-locking carabiner with a spring-loaded latch at each end for ease of installation. They’re often used in automotive assembly lines, conveyor systems, and safety mechanisms. Do not use them to hold overhead loads.

Minimum Load—The amount of force required to start extending the spring.

Maximum Load—The amount of force required to fully extend the spring.

			Load					Carabiner
Lg.	OD	Extended Lg. @ Max. Load	Min.	Max., lb.	Spring Rate, lbf/in	Material	Sleeve Material	Lg.	Opening Wd.	Material	Temp. Range, ° F		Each
9"	1"	19"	Not Rated	10	0.7	Latex	Polypropylene Fabric	1 5/8"	1/4"	Steel	30 to 130	8433K62	000000
9"	1"	19"	Not Rated	15	1.2	Latex	Polypropylene Fabric	1 5/8"	1/4"	Steel	30 to 130	8433K63	00000
9"	1"	19"	Not Rated	25	2.6	Latex	Polypropylene Fabric	1 5/8"	1/4"	Steel	30 to 130	8433K64	00000

Linear Wave Springs

Similar to disc springs, these linear springs are good for absorbing vibration and filling in gaps along the length of an object. Their thin profile allows them to fit in tight spots.

	Lg.	Ht.	Compressed Ht. @ Working Load	Working Load, lb.	Material		Each
0.025" Thick



	0.25"	9"	0.275"	0.175"	50	High-Carbon Steel	1844N18	00000


	0.375"	9"	0.275"	0.175"	76	High-Carbon Steel	1844N19	0000


	0.045" Thick



			0.25"	9"	0.325"	0.225"	83	High-Carbon Steel	1844N21	0000


			0.375"	9"	0.325"	0.225"	133	High-Carbon Steel	1844N22	00000

Storm Door Torsion Springs

Style 2

Mounted diagonally so one end is higher than the other, the motion of an opening door tightens the torsion spring; as it unwinds, it closes the door.

For Door Swing Direction—They are reversible for right or left door-swing directions.

						Black Painted Steel
Style	Dia.	Lg.	For Door Swing Direction	Mounting Location	Mounting Hardware Included		Each
2	15/16"	9"	Left, Right	Door, Frame	Yes	1474A12	000000

Spring Lid Supports


	Top Mount, Opens Up

Also known as hatch springs, these supports are commonly used on hatches and other top-opening lids. Raise the lid to extend the spring, which props the lid open—an internal cable keeps the spring from overextending. Press the center of the spring to release the hold and close the lid. To secure the lid in a closed position, use a latch or lock (not included). These supports are rated for maximum lid weight—do not exceed the weight listed. They can be used individually but should be used in pairs for lids longer than 24".

Reversible Mount—Reversible mount supports are for right-side or left-side mounting positions.

Top Mount, Opens Up—Supports for lids that open up from the top are often used on crates, hatches, and tool chests.

	Min. Mounting				For Max. Lid Weight, lb.								Mounting
	Dp. (A)	Clearance (B)	Lid Mounting Clearance (C)	For Lid Opening Angle	One Lid Support	Two Lid Supports	Lg.	Dia.	Material	Mounting Location	Performance	Hold Lid Closed	Hardware Included	Screw Size	No. of Holes		Each
Top Mount, Opens Up



		2.5"	6.36"	3.86"	90°	20	40	9"	7/16"	304 Stainless Steel	Left Side, Right Side	Reversible Mount	No	No	No. 6	4	7008N12	000000