1mm Coarse 304 Stainless Steel Long Compression Spring Length 305mm Fasteners

Roll over image to zoom in Click on image to zoom

1mm Coarse 304 Stainless Steel Long Compression Spring Length 305mm Fasteners

HomeDIYer

No reviews

By HomeDIYer®

Size(mm): 1*6*305mm

Quantity(PCS): 1

Price:

$7.81 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

DIY Expert Support

Get fitment advice & recommendations

Mon–Fri 8:30 AM – 8:00 PM

WhatsApp Email Us

24-Hour Fast Ship

Arrives in 3–14 Days

Worldwide Shipping

30-Day Returns

1 tree planted with every purchase

1mm Wire 304 Stainless Steel Long Compression Spring — Reliable Force in Every Coil

When a project demands a spring that holds its shape under repeated load cycles, a flimsy carbon-steel coil is the last thing you want. Engineers, robotics builders, and hands-on DIYers who need a dependable 1mm coarse compression spring in a 305mm extended length will find this 304 stainless steel option delivers consistent push-back force without the rust risk that plagues uncoated alternatives.

Each spring is wound from 1mm diameter 304 stainless steel wire into a cylindrical coil body with an overall length of 305mm (approximately 12 inches). Outer diameter ranges from 6mm to 16mm (roughly 0.24" to 0.63") depending on the selected size variant, with a coarse pitch that provides a longer free travel range per unit of compression. The open-end coil construction is standard for general-purpose compression applications.

Typical use cases include custom actuator return mechanisms in robotics and automation rigs, tension-balancing assemblies in 3D printer Z-axis carriages, and replacement springs for industrial jigs, fixtures, and hand tools where a 305mm long compression spring for DIY projects is required. The 304 alloy also makes these springs a practical choice for outdoor or mildly corrosive environments.

🔩 Compatibility: Suitable for spring guides, mandrels, or bores sized to match the selected outer diameter. Verify inner diameter clearance against your guide rod before ordering. Mix-and-match size and quantity variants to suit your build.

✅ Key Features of These 304 Stainless Steel Long Compression Springs

🧲 304 Stainless Steel Wire

Wound from 304-grade stainless steel, offering solid corrosion resistance in humid, wet, or mildly acidic environments without surface coatings that can flake or wear off.

📏 305mm Extended Free Length

The 305mm (≈12") free length gives you generous working travel, making these springs well-suited for long-stroke mechanisms, counterbalance systems, and extended actuator returns.

⚙️ 1mm Wire Diameter, Coarse Pitch

The 1mm wire gauge paired with a coarse coil pitch delivers a lighter spring rate ideal for low-to-medium load applications where smooth, progressive compression is needed.

📐 Multiple OD Options (6–16mm)

Six outer diameter variants — 6, 8, 10, 12, 14, and 16mm — let you match the spring to your guide bore or housing without custom fabrication.

🔄 Open-End Coil Construction

Standard open ends allow the spring to seat naturally against flat surfaces or inside recessed pockets, compatible with most off-the-shelf spring retainers and caps.

🛠️ Broad Application Range

From robotics and automation to 3D printing, hand tools, and general mechanical assemblies — these stainless steel compression springs for DIY and light industrial use cover a wide range of everyday engineering needs.

📐 Technical Specifications — Compression Spring

Wire Diameter	1mm (0.039")
Free Length	305mm (≈12.0")
Outer Diameter	6 / 8 / 10 / 12 / 14 / 16mm (see variant options)
Pitch Type	Coarse
End Type	Open ends
Material	304 Stainless Steel
Spring Rate	See variant options
Surface Finish	Natural (uncoated)
Quantity per Order	1 PCS

❓ Frequently Asked Questions

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

Measure the inner diameter of your spring housing or the outer diameter of your guide rod. For a housing fit, the spring OD should be slightly smaller than the bore. For a guide rod fit, the spring inner diameter (OD minus 2× wire diameter) should be slightly larger than the rod. Select the variant whose OD gives you the appropriate clearance — typically 0.5–1mm of play on each side.

What load can a 1mm wire compression spring handle?

A 1mm wire diameter spring is designed for light-to-medium loads. The exact spring rate depends on the outer diameter and number of active coils. These springs are well-suited for return mechanisms, counterbalances, and light actuator applications rather than heavy-duty clamping or press-fit uses. If you need exact load data for your variant, contact us to confirm.

Is 304 stainless steel suitable for outdoor or wet environments?

Yes. 304 stainless steel provides good resistance to atmospheric corrosion, moisture, and mild chemical exposure. It is a practical choice for outdoor fixtures, garden equipment, and marine-adjacent applications where light corrosion resistance is needed. For highly saline or strongly acidic environments, 316 stainless steel would offer superior protection.

Can I cut this spring to a shorter length?

Compression springs can be cut shorter using a rotary tool or spring cutter, but cutting changes the spring rate and may leave sharp ends that require grinding. If you need a specific shorter length, it is generally better to select a spring closer to your target free length. Contact us if you need guidance on available shorter options.

Are these springs compatible with 3D printer Z-axis or bed-leveling assemblies?

Yes, the 305mm long compression spring is commonly used in custom Z-axis counterbalance rigs and extended bed-leveling setups on larger-format 3D printers. Select the OD variant that matches your guide rod or spring pocket. The coarse pitch provides smooth, progressive travel suitable for these precision applications.

What is the difference between coarse pitch and fine pitch compression springs?

Coarse pitch springs have wider spacing between coils, which gives a longer free travel range and a lower spring rate for a given wire diameter and OD. Fine pitch springs have tighter coil spacing, resulting in a higher spring rate and shorter travel. For long-stroke, low-force applications — such as return mechanisms or counterbalances — coarse pitch is typically the better choice.

How many springs do I receive per order?

Each order of the standard listing includes 1 PCS (one spring). If you need multiple pieces, simply increase the order quantity at checkout or contact us about bulk pricing for larger quantities.

🛒 Select your Size(mm) above, then add to cart.