4-Pack Stainless Steel C-Clamps 20/30/45mm – Woodworking & Welding

4-Pack Stainless Steel C-Clamps | 20mm, 30mm & 45mm Sizes

Get a firm, reliable hold on any project with this versatile set of four heavy-duty stainless steel C-clamps. Available in three jaw opening sizes — 20mm, 30mm, and 45mm — this kit covers everything from fine woodworking and gluing to metal fabrication, welding, and automotive assembly. The smooth screw adjustment and pressure-distributing clamping pad let you lock materials in place quickly and securely without slippage or surface damage.

Made in Mainland China.

Key Features

• Premium Stainless Steel Construction — Corrosion-resistant and built for heavy-duty use across workshops, garages, and job sites.
• Three Jaw Opening Sizes Included:
  • 20mm opening — Clamp range: 0–17mm
  • 30mm opening — Clamp range: 0–25mm
  • 45mm opening — Clamp range: 10–40mm
• Easy Screw Adjustment — Simply turn the screw to reach your desired clamping width; no tools required for setup.
• Even-Pressure Clamping Pad — Specially designed pad distributes force evenly as you tighten, protecting workpiece surfaces.
• Multi-Purpose Use — Ideal for woodworking, gluing, welding, metalworking, assembly work, furniture repair, and automotive tasks.
• Compact & Desk-Friendly — Small footprint makes these clamps perfect for benchtop work and tight-space projects.
• Pack of 4 — Get multiple clamps to tackle larger assemblies or work on several joints simultaneously.

Specifications

What's in the Box?

• 4 × Stainless Steel C-Clamps (assorted sizes: 20mm, 30mm, 45mm)

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Safety & Workshop Best Practices

Always wear appropriate personal protective equipment when operating clamping tools in welding or metalworking environments. For guidance on safe workshop practices, visit OSHA Hand and Power Tools Safety.

Learn more: Vise

Frequently Asked Questions

Q: What jaw opening sizes are included in this 4-pack of C-clamps?

A: This set includes clamps in three sizes — 20mm, 30mm, and 45mm jaw openings — giving you a clamp range of 0–17mm, 0–25mm, and 10–40mm respectively. The four clamps can be a mix of these sizes to cover a wide range of project thicknesses.

Q: Are these stainless steel C-clamps suitable for welding and metalworking?

A: Yes. The stainless steel construction makes these clamps durable and corrosion-resistant, making them well-suited for welding, metal processing, automotive assembly, and other demanding applications — not just woodworking and gluing.

Q: How do I adjust the clamping width?

A: Simply turn the screw to open or close the jaw to your desired width. The adjustment is smooth and straightforward — no additional tools required. The special clamping pad applies even pressure as you tighten to keep your workpiece secure and undamaged.

Q: What is the maximum board thickness these clamps can handle?

A: The 20mm clamp handles boards up to approximately 17mm (0.7 inch) thick. The 30mm clamp accommodates up to 25mm, and the 45mm clamp works with materials between 10mm and 40mm thick. Always check your material's thickness before selecting a clamp size.

Q: Can these C-clamps be used on non-wood materials?

A: Absolutely. These stainless steel C-clamps are suitable for non-metal and metal materials alike, including use in automotive, gluing, bonding, and general assembly tasks — making them a versatile addition to any workshop or toolbox.