This browser is no longer supported. Upgrade to Microsoft Edge or switch to a supported browser, like Chrome, Safari, or Firefox, to explore the MW Components website.

We're sorry for the inconvenience.

100 YRS
167 DAYS

B-77CS - 0.41 Inch Music Wire Extension Springs

Inventory:           
Estimated Lead Time

The B-77CS is a regular extension spring manufactured by Century Spring. It is made from Music Wire and has a natural finish. This spring has a wire diameter of 0.012 inches, an outside diameter of 0.125 inches, and a free length of 0.41 inches. It has an initial tension of 0.06 Pound and a maximum deflection of 0.64 inches. The B-77CS has a maximum load of 0.8 Pound Force and features machine hook ends. It is a left-wound spring, meaning it is wound in a counterclockwise direction. The B-77CS is a standard extension spring suitable for a variety of applications.

At Century Spring, we offer fast shipping and maintain a significant stock inventory. Our products, including the B-77CS, are proudly made in the United States. With our reliable shipping and ample supply, Century Spring ensures that customers can quickly receive the springs they need for their projects.

Unit System
Specs (in standard)
Label Value
A) Brand Century Spring
B) Sku B-77CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.012 in
F) Outside Diameter 0.125 in
G) Length 0.41 in
H) End Type Machine Hook
I) End Position Random
J) Rate 1.1 lbs/in
K) Initial Tension 0.06 lb
L) Sugg Max Deflection 0.64 in
L) Sugg Max Load 0.8 lbf
O) Finish None
Specs (in metric)
Label Value
A) Brand Century Spring
B) Sku B-77CS
C) Part Type Standard
D) Material Music Wire
E) Wire Diameter 0.3 mm
F) Outside Diameter 3.18 mm
G) Length 10.41 mm
H) End Type Machine Hook
I) End Position Random
J) Rate 0.19 N/mm
K) Initial Tension 0.03 kg
L) Sugg Max Deflection 16.26 mm
L) Sugg Max Load 3.56 N
O) Finish None