70mm Springs | McMaster-Carr

Squeeze these springs and they’ll push right back to their original length. When compressed, they apply steady pressure to keep components securely in place. Release the pressure and they snap back instantly, just like the tip of a ballpoint pen.

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 compress than steel, but can’t handle as high a load.

	OD, mm	ID, mm	Wire Dia., mm	Compressed Lg. @ Max. Load, mm	Max. Load, lb.	Spring Rate, lbf/mm	End Type	Pkg. Qty.		Pkg.
Highly-Corrosion-Resistant 316 Stainless Steel



	70	11.99	9.19	1.4	43.129	10.1	0.37	Closed and Ground	1	00000000	00000


	70	15.01	12.63	1.19	25.527	5.2	0.11	Closed and Ground	1	00000000	0000
	70	18.29	15.49	1.4	34.723	6.8	0.19	Closed and Ground	1	00000000	0000

Coiled Spring Pins


	End View

The best spring pins for joining parts exposed to vibration and shock. They're often used in power transmission, automation, and other assemblies with constant motion and sudden starts and stops. Because of their spiral shape, they flex to conform to holes that aren’t perfectly round.

Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.

	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Spring Steel







	10 mm Diameter

	70	10.000 to 10.100	13,900	Rockwell C43	ASME B18.8.3M, DIN 7343, ISO 8750	1	000000000	00000

Slotted Spring Pins


	End View

Squeeze these pins into holes and they expand slightly, creating tension to hold parts in place. They are often used as hinge pins and as fasteners for springs and power transmission components. An alternative to dowel pins, they're lighter in weight with a hollow center and don’t need a precise hole. Also known as roll pins.

Spring Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.

	Double Shear Breaking Strength, lbf	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Spring Steel







	5 mm Diameter

	70	5	0.5	2,300	Rockwell C42	DIN 7346, ISO 13337	10	000000000	00000




			6 mm Diameter

			70	6	0.75	4,000	Rockwell C42	DIN 7346, ISO 13337	10	000000000	00000




					8 mm Diameter

					70	8	0.75	5,300	Rockwell C42	DIN 7346, ISO 13337	10	000000000	00000




							10 mm Diameter

							70	10	1	5,300	Rockwell C42	DIN 7346, ISO 13337	5	000000000	0000




									12 mm Diameter

									70	12	1	10,700	Rockwell C42	DIN 7346, ISO 13337	5	000000000	00000




											13 mm Diameter

											70	13	1.2	14,800	Rockwell C42	DIN 7346, ISO 13337	1	000000000	0000




													16 mm Diameter

													70	16	1.5	22,000	Rockwell C42	DIN 7346, ISO 13337	1	000000000	0000