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NN-77 - 1.22 Inch, 288 Inch Pounds 302/304 Stainless Steel Compression Spring

Inventory Status
In-stock
Estimated Lead Time
In-stock parts: usually ships in 12-24 hours

Regular compression spring in 302/304 Stainless Steel with 3.6 total coils and Closed & Ground ends. This spring features an O.D. of 1.406 Inch, an I.D. of 1.086 Inch, and a spring rate of 288 Inch Pounds.

NOTE: The spring rate value for compression springs with 4 coils or less is a reference value.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Brand Century Spring
Display Name NN-77
Ends Closed & Ground
Finish None
Free Length 1.22 in
Inside Diameter 1.086 in
Material 302/304 Stainless Steel
Outside Diameter 1.406 in
Part Type Standard
Rate 288 lbs/in
SKU NN-77CS
Solid Length 0.576 in
Suggested Max Deflection 0.276 in
Suggested Max Load 80 lbf
Total Coils 3.6
Wire Diameter 0.162 in
Specs (in metric)
Label Value
Brand Century Spring
Display Name NN-77
Ends Closed & Ground
Finish None
Free Length 30.99 mm
Inside Diameter 27.58 mm
Material 302/304 Stainless Steel
Outside Diameter 35.71 mm
Part Type Standard
Rate 50.43 N/mm
SKU NN-77CS
Solid Length 14.63 mm
Suggested Max Deflection 7.01 mm
Suggested Max Load 355.84 N
Total Coils 3.6
Wire Diameter 4.11 mm
Experience uncompromising strength and stability with the NN-77 stainless steel compression spring. Providing the power to meet extreme mechanical challenges with its 288 lbs/in spring rate, the NN-77 generates potent compressive force in its compact 1.22" body. It withstands up to 80 lbf max loads without buckling or warping.

The NN-77 enables engineers and manufacturers to optimize mechanical performance. Its high spring rate and corrosion-resistant stainless steel construction provide long-lasting durability and smooth functionality even under extreme force. For uncompromising compressive power, choose the NN-77.

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