TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm
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TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mmTF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm

TF/TL/TM/TH/TB Heavy Duty Load Compression Spring Die Springs OD:16mm L:25-100mm

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$3.59 USD
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In stock (500 units), ready to be shipped

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Description

M16 Die Compression Springs — Multi-Grade Load Support for Stamping, Molding & DIY Automation

When a stamping die bottoms out unexpectedly or an injection mold loses consistent ejection force, the culprit is almost always an undersized or mismatched compression spring. Engineers, toolmakers, and serious DIY makers who need reliable, repeatable spring force in tight spaces rely on standardized die springs — and these M16 die compression springs deliver exactly that across five load grades.

Each spring features an outer diameter (OD) of 16 mm (approx. 0.63 in) and is available in lengths ranging from 25 mm to 100 mm (approx. 0.98 in to 3.94 in). The five color-coded types — Yellow (Extra Light / TF), Blue (Light / TL), Red (Medium / TM), Green (Heavy / TH), and Brown (Extra Heavy / TB) — follow the ISO 10243 / JIS B 5012 die spring color standard, making cross-referencing with existing tooling straightforward. Material is high-grade alloy spring steel with a surface treatment appropriate to each load class.

Typical use cases include progressive stamping dies requiring consistent blank-holder pressure, plastic injection mold ejector-pin return systems, custom fixture clamping mechanisms, and DIY automation projects such as cam-actuated feeders or spring-loaded carriages. The standardized OD and color coding make these springs a reliable drop-in replacement for worn or broken die springs in existing tooling.

🔧 Compatibility: Fits standard M16 die spring pockets per ISO 10243 / JIS B 5012. Verify free length and load grade (color) against your existing tooling specification before ordering.

✅ Key Features of These M16 Die Compression Springs

🎨 5 Color-Coded Load Grades

Yellow (Extra Light), Blue (Light), Red (Medium), Green (Heavy), and Brown (Extra Heavy) follow the ISO 10243 / JIS B 5012 standard for instant visual identification and cross-referencing.

📏 Wide Length Range

Available in 14 free-length options from 25 mm to 100 mm (0.98 in – 3.94 in), covering the most common die spring pocket depths in stamping and molding tooling.

⚙️ Consistent OD of 16 mm

The 16 mm outer diameter fits standard M16 die spring bores, enabling direct replacement without pocket modification in most tooling applications.

🔩 Alloy Spring Steel Construction

Wound from high-grade alloy spring steel for fatigue resistance under repeated compression cycles — suitable for stamping, ejection, and clamping duty cycles.

📦 Flexible Quantity Options

Order in packs of 1, 2, or 5 pieces to match your tooling inventory needs — whether you need a single replacement or a full set for a new die build.

🏷️ Standardized Designation (TF / TL / TM / TH / TB)

Each grade carries its standard designation (TF = Extra Light through TB = Extra Heavy), making specification and reordering straightforward for toolroom and maintenance teams.

📐 Technical Specifications — M16 Die Compression Springs

Outer Diameter (OD) 16 mm (0.63 in)
Free Length Range 25 mm – 100 mm (0.98 in – 3.94 in)
Load Grades Available Extra Light (Yellow/TF), Light (Blue/TL), Medium (Red/TM), Heavy (Green/TH), Extra Heavy (Brown/TB)
Standard ISO 10243 / JIS B 5012 (die spring color code)
Material Alloy spring steel
Surface Treatment See variant options
Inner Diameter (ID) See variant options
Wire Diameter See variant options
Max. Deflection Rate See variant options
Spring Rate See variant options
Quantity per Pack 1 / 2 / 5 pcs (select above)

❓ Frequently Asked Questions

How do I choose the right load grade (color) for my application?

Match the load grade to the force required at your working deflection. Yellow (Extra Light / TF) suits light-pressure applications such as thin-sheet blank holders; Blue (Light / TL) and Red (Medium / TM) cover general-purpose stamping and ejection; Green (Heavy / TH) and Brown (Extra Heavy / TB) are used where high clamping or stripping forces are needed. Consult your die design specification or spring load chart for the exact grade.

How do I select the correct free length?

The free length should be chosen so that the spring operates within 20–30% of its maximum deflection at working load, and does not exceed its maximum allowable deflection (typically 30–45% of free length depending on grade). Measure your pocket depth and required working stroke, then select a free length that keeps the spring in its safe operating range.

Are these springs compatible with standard die spring pockets?

Yes. The 16 mm OD conforms to the ISO 10243 / JIS B 5012 standard die spring dimensions, so these springs are dimensionally compatible with standard M16 die spring bores. Always verify the pocket diameter, guide pin diameter, and free length against your tooling drawings before installation.

What material are these springs made from, and how corrosion-resistant are they?

The springs are wound from alloy spring steel. Standard alloy spring steel has moderate corrosion resistance suitable for indoor tooling environments. For applications exposed to coolant, moisture, or corrosive media, consider adding a protective coating or consult us to confirm the surface treatment available for your selected variant.

Can I use these springs in injection mold ejector systems?

Yes. Die compression springs are widely used as ejector-pin return springs in injection molds. Select the load grade that provides sufficient return force for your ejector plate weight and cycle speed. Medium (Red/TM) and Heavy (Green/TH) grades are most common for ejector return duty. Ensure the spring free length and deflection range suit your mold's ejector stroke.

How many pieces do I need to order, and can I mix grades in one order?

Each variant is sold in packs of 1, 2, or 5 pieces. Select the quantity that matches your tooling requirement — for example, a four-corner die typically needs 4 springs of the same grade and length. To mix grades or lengths, simply add each variant to your cart separately.

What is the difference between TF, TL, TM, TH, and TB designations?

These are the standard load-grade designations used in the ISO 10243 / JIS B 5012 die spring system: TF = Extra Light (Yellow), TL = Light (Blue), TM = Medium (Red), TH = Heavy (Green), TB = Extra Heavy (Brown). The designation encodes the load class, making it easy to specify and reorder the correct spring for your tooling.

🛒 Select your load grade, length, and quantity above, then add to cart.

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