Product Overview
Century Spring K-90CS Helical Compression Spring 0.250" OD x 0.750" Free Length
Condition
New. Unused industrial hardware stock. Clean zinc-plated finish with closed and ground ends.
Same or next business day shipping from our Idaho warehouse. Reliable parts since 1999. Honest pricing, no nonsense.
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Product Overview
Century Spring K-90CS is a precision helical compression spring engineered for mechanical assemblies, return mechanisms, and prototyping fixtures. Constructed from durable spring steel with a protective zinc plating, it delivers consistent linear resistance in compact machine spaces.
Key Features
- Outside diameter: 0.250 in (6.35 mm)
- Inside diameter: 0.180 in (4.57 mm)
- Free length: 0.750 in (19.05 mm)
- Wire diameter: 0.035 in (0.89 mm)
- Spring rate: 29.0 lbs/in (5.08 N/mm)
- End type: Closed and ground
- Material: Zinc-plated spring steel
Applications
- Precision actuator returns, push-button switches, and detent assemblies in industrial machinery.
- Custom shop jigs, tooling fixtures, and benchtop prototype mechanisms.
- Creative maker builds, scale models, and hobbyist mechanical projects needing calibrated tension.
Frequently Asked Questions
Are the ends of this spring ground flat?
Yes. The spring ends are closed and ground flat to sit square against mating surfaces and distribute load evenly.
What material is this spring made from?
It is made from spring steel with a zinc-plated finish for basic corrosion resistance.
Why buy individual springs here instead of a large bulk lot?
Buying individual units allows you to get the exact count required for a repair or build without paying for surplus box quantities you will not use. Flat-rate shipping is $8 across your entire order, orders over $28 ship free, and every purchase ships same or next business day from our Idaho warehouse.
Simple mechanical parts do their best work quietly, keeping tension exact and mechanisms moving without fuss.
Shipping? $8 flat rate, free once your order passes $28 - and it leaves the Idaho warehouse the same or next business day.
