41mm Springs | McMaster-Carr

These springs are more corrosion resistant than standard compression springs. They're also easier to compress than standard compression springs. As you squeeze a compression spring, it pushes back to return to its original length. Spring rate is the amount of force required for every inch of compression or, for metric springs, millimeter of compression. The higher the spring rate, the harder it is to compress the spring.

302 stainless steel springs have good corrosion resistance.

Springs with closed and ground ends sit flat, so they won’t buckle.

For technical drawings and 3-D models, click on a part number.

Metric

41 mm Lg.
OD, mm	ID, mm	Wire Dia., mm	Compressed Lg. @ Max. Load, mm	Max. Load , lbs.	Spring Rate, lbs./mm	Material	End Type	Specifications Met	Pkg. Qty.		Pkg.
18.5	13.5	2.5	20.5	68.32	3.3	302 Stainless Steel	Closed and Ground	DIN 2095	2	00000000	000000
22	18	2	13.6	29.75	1.09	302 Stainless Steel	Closed and Ground	DIN 2095	5	00000000	00000
29	21	4	22.9	159.65	8.92	302 Stainless Steel	Closed and Ground	DIN 2095	1	00000000	00000
30	20	5	27.6	293.95	21.85	302 Stainless Steel	Closed and Ground	DIN 2095	1	00000000	00000

Extension Springs with Loop Ends

As you stretch an extension spring, it gets harder to pull. Minimum load is the amount of force required to start to extend the spring. Maximum load is the amount of force required to fully extend the spring. Spring rate is the amount of force required for every inch or millimeter of extension.

For technical drawings and 3-D models, click on a part number.

Metric

			Load, lbs.
OD, mm	Wire Dia., mm	Extended Lg. @ Max. Load, mm	Min.	Max.	Spring Rate, lbs./mm	Material	Pkg. Qty.		Pkg.
41 mm Lg.
8.5	1.2	65.6	2.59	14.12	0.488	Music-Wire Steel	2	0000000	000000

Extension Springs with Hook Ends

For technical drawings and 3-D models, click on a part number.

Metric

			Load, lbs.
OD, mm	Wire Dia., mm	Extended Lg. @ Max. Load, mm	Min.	Max.	Spring Rate, lbs./mm	Material	Pkg. Qty.		Pkg.
41 mm Lg.
8.5	1.2	65.6	2.59	14.11	0.49	Music-Wire Steel	2	00000000	000000

Corrosion-Resistant Extension Springs with Hook Ends

Made of stainless steel, these springs are more corrosion resistant than steel springs. They're also easier to extend than steel springs. As you stretch an extension spring, it gets harder to pull. Minimum load is the amount of force required to start to extend the spring. Maximum load is the amount of force required to fully extend the spring. Spring rate is the amount of force required for every inch or millimeter of extension.

302 stainless steel springs have good corrosion resistance.

For technical drawings and 3-D models, click on a part number.

Metric

			Load, lbs.
OD, mm	Wire Dia., mm	Extended Lg. @ Max. Load, mm	Min.	Max.	Spring Rate, lbs./mm	Material	Pkg. Qty.		Pkg.
41 mm Lg.
8.5	1.2	65.6	2.59	11.76	0.41	302 Stainless Steel	2	00000000	000000

Extension Spring Stud Anchors

A black-oxide finish provides these steel anchors with mild corrosion resistance. Attach an extension spring to a stud and then thread the stud into your part for a secure connection.

For technical drawings and 3-D models, click on a part number.

Metric

Thread
Size	Pitch, mm	Min. Lg., mm	Lg., mm	Dia., mm	Hole Dia., mm	Material		Each
M10	1.5	28	41	10	6	Black-Oxide Steel	0000000	00000

Corrosion-Resistant Extension Spring Stud Anchors

These stainless steel anchor studs offer excellent corrosion resistance. Attach an extension spring to a stud and then thread the stud into your part for a secure connection.

For technical drawings and 3-D models, click on a part number.

Metric

Thread
Size	Pitch, mm	Min. Lg., mm	Lg., mm	Dia., mm	Hole Dia., mm	Material	Anchor Type		Each
M10	1.5	28	41	10	6	18-8 Stainless Steel	Stud	000000000	000000

Swiveling Extension Spring Stud Anchors

A black-oxide finish provides these steel anchors with mild corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to a stud and then thread the stud into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.

For technical drawings and 3-D models, click on a part number.

Metric

Thread
Size	Pitch, mm	Min. Lg., mm	Lg., mm	Dia., mm	Hole Dia., mm	Hex Size, mm	Material		Each
M10	1.5	28	41	10	6	3	Black-Oxide Steel	000000000	000000

Corrosion-Resistant Swiveling Extension Spring Stud Anchors

These stainless steel anchor studs offer excellent corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to a stud and then thread the stud into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.

For technical drawings and 3-D models, click on a part number.

Metric

Thread
Size	Pitch, mm	Min. Lg., mm	Lg., mm	Dia., mm	Hole Dia., mm	Hex Size, mm	Material		Each
M10	1.5	28	41	10	6	3	18-8 Stainless Steel	000000000	000000