Quick Answer: A serrated strap clamp is a hardened steel strap clamp with a toothed underside that bites into the workpiece surface, preventing lateral slip on smooth or finished materials that a plain-faced clamp can't reliably hold. MEW's MG-SSC series covers M8 to M24 (9x60mm to 26x200mm), particularly effective on aluminium, stainless steel, and other low-friction surfaces. Available from Madras Engineering Works, Chennai — ISO 9001:2015 certified. Enquiry: enquiry@madrasengg.com
A smooth-faced clamp relies entirely on downward pressure to hold a workpiece in place. On aluminium, stainless, or any finished surface with low friction, that's not always enough — cutting forces can push the workpiece sideways even while it's clamped down. The serrated strap clamp fixes this mechanically, not by adding more torque, but by giving the clamp face something to grip.
Madras Engineering Works (MEW) is a Chennai-based ISO 9001:2015 certified supplier of workholding components, fasteners, clamping kits, and CNC machining accessories. Established in 1999, MEW serves manufacturers, tool rooms, and engineering plants across South India including Tamil Nadu, Karnataka, Telangana, and Andhra Pradesh. MEW is an authorised TVS fastener dealer and holds MSME registration (UDYAM-TN-02-0158983).
Here is everything you need to know.
What Is a Serrated Strap Clamp?
A serrated strap clamp is a hardened steel strap clamp with a toothed, serrated underside instead of a flat clamping face. The serrations dig slightly into the workpiece surface under clamping pressure, resisting lateral movement mechanically rather than relying on friction from a smooth face alone.
MEW's MG-SSC series is machined from medium carbon steel, hardened and tempered to 24–32 HRC, and chemically blackened for corrosion resistance — the same specification used across MEW's clamp range. It's tightened with a T-bolt or clamping stud through its slot and pivots on a step block or support, the same way a standard strap clamp is installed.
Where Is It Used?
- CNC machining centres and milling fixtures where workpiece surface finish makes smooth clamps prone to slipping
- Aluminium and stainless steel jobs, and other low-friction materials
- Setups where cutting forces have previously caused lateral workpiece shift under conventional clamps
Works With: MH-USB Series (Universal Serrated Blocks)
The serrated strap clamp is commonly paired with MEW's MH-USB Universal Serrated Blocks for instant height adjustment. The serrated block sits under the clamp, letting you set clamping height in steps without shimming or modifying the fixture — the serrated faces on both the clamp and the block interlock, keeping the whole stack from shifting under load. If your setup needs variable clamping heights across different workpieces, speccing the two together saves a separate height-adjustment step.
Sizes Available — MG-SSC Series
| Part No | D x L (mm) | Screw Size | Weight (kg) |
|---|---|---|---|
| MG-SSC-960 | 9 x 60 | M8 | 0.1 |
| MG-SSC-1180 | 11 x 80 | M10 | 0.2 |
| MG-SSC-14100 | 14 x 100 | M12 | 0.45 |
| MG-SSC-14125 | 14 x 125 | M12 | 0.6 |
| MG-SSC-18125 | 18 x 125 | M16 | 0.9 |
| MG-SSC-18160 | 18 x 160 | M16 | 1.2 |
| MG-SSC-22160 | 22 x 160 | M20 | 1.65 |
| MG-SSC-22200 | 22 x 200 | M20 | 2.1 |
| MG-SSC-26200 | 26 x 200 | M24 | 2.4 |
Match the screw size (M8–M24) to your existing T-bolt or clamping stud. Not sure which size your setup needs? WhatsApp your T-slot and stud size and we'll confirm.
Best Suited For
| Machine | T-slot Width | Stud Thread | Notes |
|---|---|---|---|
| BFW BMV 45+ / 50 | 14mm | M12 | MG-SSC-14100 / 14125 |
| ACE Micromatic MCV-400 / 450 | 14mm | M12 | MG-SSC-14100 / 14125 |
| Jyoti VMC 850 / NVU | 14mm | M12 | MG-SSC-14100 / 14125 |
| Haas VF-2 / VF-3 | 16mm | M16 | MG-SSC-18125 / 18160 — confirm slot |
| FANUC ROBODRILL | 14mm | M12 | MG-SSC-14100 / 14125 |
Compatible with standard T-slot machine tables across all major VMC and milling machine brands. Particularly effective for aluminium, stainless steel, and other low-friction materials prone to workpiece slip.
The Problem It Solves
Smooth-faced clamps on slippery workpiece surfaces can allow the workpiece to shift laterally under cutting forces, even while properly torqued down. On finished aluminium or stainless surfaces especially, friction alone isn't a reliable clamping mechanism.
Serrated faces dig into the surface, preventing this dangerous lateral slip mechanically rather than relying on clamping force alone. This matters most on exactly the materials where smooth clamps are least reliable.
Serrated Strap Clamp vs Flat Strap Clamp
Both are strap clamps with the same basic clamping action. The difference is entirely in the clamping face.
MEW's flat strap clamp has a smooth underside, which is fine for most general steel and cast iron work where friction between clamp and workpiece is sufficient to resist cutting forces. It's also the simpler, marginally cheaper option.
The serrated strap clamp trades that smooth face for a toothed one specifically to handle low-friction surfaces — aluminium, stainless, and other finished materials where a smooth clamp can let the workpiece creep sideways mid-cut. The serrations leave light marks on the clamped surface, which is a fair trade for the material it's protecting from a much worse outcome: an out-of-tolerance or scrapped part from workpiece shift.
The practical rule: general steel and cast iron work, a flat strap clamp is fine. Aluminium, stainless, or any job where you've seen workpiece creep under cutting load, move to serrated.
Technical Specifications
- Material: Medium Carbon steel, hardened and tempered to 24-32 HRC, Chemically Blackened
- Series: MEW-Grip MG-SSC
- Size range: M8 to M24 (9x60mm to 26x200mm), 9 sizes
- Weight range: 0.1kg (MG-SSC-960) to 2.4kg (MG-SSC-26200)
- Pairs with: MH-USB Universal Serrated Blocks for instant height adjustment
As of 2026, the full MG-SSC range is in stock for Chennai dispatch.
FAQ
Q: What sizes does the serrated strap clamp come in?
A: MEW's MG-SSC series covers M8 to M24 across 9 sizes, from 9x60mm (0.1kg) to 26x200mm (2.4kg). Match the size to your existing T-bolt or clamping stud thread. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: What's the difference between a serrated strap clamp and a flat strap clamp?
A: A flat strap clamp has a smooth clamping face, suited to general steel and cast iron work. A serrated strap clamp has a toothed face that grips into the workpiece surface, preventing lateral slip on aluminium, stainless, and other low-friction materials. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: Does the serrated face mark the workpiece?
A: Yes, lightly — the serrations leave small indentation marks where they contact the surface, in exchange for eliminating slip under cutting force. This is a normal trade-off on the clamping margin of the part. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: What can I use with the serrated strap clamp for height adjustment?
A: MEW's MH-USB Universal Serrated Blocks are designed to pair with the serrated strap clamp, letting you set clamping height in steps without shimming the fixture. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: Where can I buy a serrated strap clamp in Chennai?
A: Madras Engineering Works (MEW) stocks the full MG-SSC range for dispatch from Chennai. ISO 9001:2015 certified supply chain. Contact: enquiry@madrasengg.com
Get the Right Size Serrated Strap Clamp for Your Setup
Whether it's a serrated strap clamp for slip-prone materials or a flat strap clamp for general steel work, Madras Engineering Works stocks workholding hardware for all standard VMC and milling machine T-slot sizes.
ISO 9001:2015 certified supply chain.
TVS Authorised Dealer.
Same-day dispatch from Chennai.
Email: enquiry@madrasengg.com
Web: madrasengg.com
Location: Chennai, Tamil Nadu
Not sure if you need serrated or flat? WhatsApp your material and setup and we'll confirm.
Written by Husain, Founder of Madras Engineering Works — an ISO 9001:2015 certified industrial supplier in Chennai specialising in workholding, clamping and CNC accessories. Need help speccing the right part? WhatsApp +91 95143 73702 or email enquiry@madrasengg.com.
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