Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths
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Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengthsWire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths

Wire Dia 1 mm OD 11mm - 15mm Small Springs Compression Spring Steel All lengths

HomeDIYer
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By HomeDIYer®

Price:
$5.83 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Wire Dia 1mm OD 11–15mm Compression Springs — Precise Fit for Small-Scale Mechanisms

When a mechanism fails because a tiny spring loses its tension or snaps under repeated cycling, the whole assembly stops working — and sourcing an exact replacement can be frustrating. These 1mm wire diameter compression springs are designed for makers, engineers, and repair technicians who need reliable, dimensionally consistent springs in small outer diameters without ordering in bulk from an industrial supplier.

Each spring is wound from carbon steel wire with a diameter of 1 mm (0.039 in). Outer diameters span 11 mm to 15 mm (approx. 0.43 in to 0.59 in), and free lengths range from 60 mm to 100 mm (approx. 2.36 in to 3.94 in). The close-wound coil geometry provides consistent spring rates across the full length range, and the ends are ground flat for stable seating.

Typical applications include pen mechanisms and retractable writing instruments, small valve assemblies and pneumatic fittings, hobby robotics and 3D-printer extruder tensioners, and DIY electronics enclosure latches requiring light return force. The compact OD range makes these springs ideal for compression spring replacement in tight bores and precision jigs.

⚙️ Compatibility: Suitable for bore diameters of 11–15 mm (0.43–0.59 in). Verify free length and spring rate against your application before ordering. Select your exact Wire diameter × OD × Length combination from the variant options above.

✅ Key Features of These 1mm Wire Compression Springs

🔩 1mm Wire Diameter

Consistent 1 mm (0.039 in) wire gauge across all variants ensures uniform spring rate and predictable deflection behaviour in small-bore applications.

📐 OD Range 11–15 mm

Five outer diameter options (11, 12, 13, 14, 15 mm) let you match the spring to your bore without modification or shimming.

📏 Multiple Free Lengths

Available in 60, 70, 80, 90, and 100 mm free lengths so you can dial in the travel and preload your design requires.

⚡ Carbon Steel Construction

Wound from carbon steel wire for a reliable balance of tensile strength and elasticity, suitable for repeated compression cycles in dry or lightly oiled environments.

🛡️ Ground Flat Ends

Flat-ground end coils provide a stable seating surface, reducing lateral buckling and ensuring the spring sits square in its housing.

📦 Flexible Pack Quantities

Order in packs of 5, 10, 20, 50, or 100 pieces — ideal for prototyping single units or stocking a workshop with spares for ongoing maintenance.

📐 Technical Specifications — Compression Springs

Wire Diameter 1 mm (0.039 in)
Outer Diameter (OD) 11 mm / 12 mm / 13 mm / 14 mm / 15 mm (see variant options)
Inner Diameter (ID) 9 mm / 10 mm / 11 mm / 12 mm / 13 mm (OD minus 2× wire dia)
Free Length 60 mm / 70 mm / 80 mm / 90 mm / 100 mm (see variant options)
Material Carbon steel
End Type Ground flat (closed ends)
Spring Rate See variant options
Surface Finish See variant options
Pack Quantity 5 / 10 / 20 / 50 / 100 pcs (see variant options)
Wind Direction Right-hand (standard)

❓ Frequently Asked Questions

How do I choose the right outer diameter for my application?

Measure the bore or housing inner diameter where the spring will sit. The spring OD should be slightly smaller than the bore — typically 0.5–1 mm clearance — so it can compress freely without binding. For a 12 mm bore, a spring with 11 mm OD is usually a good starting point.

What free length should I select?

Free length is the uncompressed length of the spring. Choose a free length that is longer than your required working length by at least the amount of travel (deflection) you need. For example, if you need 20 mm of travel and a 50 mm working length, select a spring with at least 70 mm free length.

Are these springs corrosion-resistant?

These springs are made from carbon steel, which offers good mechanical properties but has limited corrosion resistance in wet or humid environments. For outdoor or moisture-exposed applications, consider applying a light coat of oil or grease, or contact us to confirm whether a coated variant is available.

What is the maximum load these springs can handle?

Maximum load depends on the specific OD and free length combination selected. With a 1 mm wire diameter, these are light-duty springs suited for low-force applications such as pen mechanisms, small latches, and sensor return springs. For load-critical applications, please contact us to confirm the spring rate and solid height for your chosen variant.

Can I use these springs in a 3D printer or robotics project?

Yes. The 11–15 mm OD range and 60–100 mm length options are well-suited for extruder tensioners, filament guide mechanisms, and small servo return springs in hobby robotics. The consistent wire diameter ensures repeatable spring rates across a batch, which is important for calibrated assemblies.

How many springs should I order for a repair or prototype?

For a one-off repair, a pack of 5 gives you spares in case of installation errors. For prototyping where you may iterate on the design, a pack of 10 or 20 is recommended. Workshop stock for ongoing maintenance is most economical in packs of 50 or 100.

What is the difference between OD and ID, and which should I measure?

OD (outer diameter) is the overall width of the spring coil. ID (inner diameter) equals OD minus twice the wire diameter — for these springs, ID = OD − 2 mm. If your spring sits inside a bore, match OD to the bore. If it sits over a rod or pin, match ID to the rod diameter with a small clearance.

🛒 Select your Wire diameter × OD × Length and Quantity above, then add to cart.

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