44 mm Springs | McMaster-Carr

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

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	44	0.99	1.78	28.6	35%	20	1.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	00000


		12.5	6	44	1.32	2.36	28.6	35%	41	2.7	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	0000
		20	10	44	1.91	4.19	28.6	35%	100	6.7	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	0000
		25	12.5	44	2.54	5.46	28.6	35%	180	12	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	0000


		Blue (Medium Load)



				10	5	44	1.17	1.85	30.8	30%	30	2.3	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	0000


				12.5	6	44	1.55	2.39	30.8	30%	54	4.1	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	0000
				20	10	44	2.36	3.96	30.8	30%	140	11	Chrome Silicon Steel	Closed and Ground	ISO 10243	00000000	0000

Extension Springs

Loop End

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.

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

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







				Spring Steel

				44	12	1.8	63	6.53	31.7	1.41	2	00000000	000000

Compression Springs

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.

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 compress 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 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	Specs. Met	Pkg. Qty.		Pkg.
Corrosion-Resistant 302 Stainless Steel



	44	6.8	5.8	0.5	12.2	1.2	0.04	Closed	DIN 2095	5	00000000	000000


	Highly Corrosion-Resistant 316 Stainless Steel



			44	6.8	5.8	0.5	19.6	0.9	0.03	Closed and Ground	—	1	00000000	0000