Double Ended Clamp for Fixtures: Two Clamping Points, One Component
Quick Answer: A double ended clamp is a hardened steel workholding component with two independent clamping points built into a single symmetric block, letting you clamp two workpiece features — or two separate workpieces — from one mounting position. It is used in CNC machining fixtures and jig construction where a confined fixture area cannot physically accommodate two separate clamps. Best suited for standard T-slot machine tables and fixture plates on all major VMC, HMC, and milling machine brands. Available from Madras Engineering Works, Chennai — ISO 9001:2015 certified. Enquiry: enquiry@madrasengg.com
The layout problem every fixture designer eventually hits
You need two clamping points close together — two features on one part, or two small workpieces side by side — and there simply isn't room for two separate clamps. The bolt circles overlap. The clamp arms foul each other. The swing clearance for one clamp lands exactly where the second clamp's body needs to sit.
This is a real, recurring problem in fixture design, not an edge case. A double ended clamp for fixtures solves it directly: one component, two independent clamping points, one mounting hole. 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 Double Ended Clamp?
A double ended clamp is a single-piece workholding component machined as a flat, octagonal-profile steel block with a central mounting hole. Because the profile is symmetric, either end of the clamp can be used as a clamping point — there is no "correct" orientation to get wrong during fixture assembly.
MEW's double ended clamp (SKU T1-DEC-1160) is made from medium carbon steel, hardened and tempered to 24-32 HRC, and finished with a chemical blackening treatment for corrosion resistance and reduced glare under shop lighting. The hardness range is what lets it take repeated clamping loads at both ends without setting or deforming over the tool-room life of the fixture.
Mechanically, it works the same way any fixture clamp works — one point of the body bears down on a workpiece feature while the mounting hole anchors it to the fixture plate — except this single body delivers two such clamping points instead of one. As of 2026, this is one of the few dedicated dual-point clamp components in MEW's catalogue built specifically for space-constrained jig layouts.
Where Is It Used?
The double ended clamp is built for fixture and jig work where two clamping points are needed close together and a compact footprint matters more than adjustability.
- CNC machining fixtures on VMCs and HMCs where two features on the same part need simultaneous clamping
- Jig construction for drilling and milling operations with multiple small parts loaded per cycle
- Production workholding in automotive and aerospace component manufacturing, where fixture plates are already dense with locators and clamps
- Tool room fixture builds where reducing the total component count simplifies assembly and maintenance
- Multi-part setups where two separate workpieces are clamped side by side in one fixture cycle
Best Suited For
| Application | Recommended? | Notes |
|---|---|---|
| Standard T-slot VMC tables (BFW, ACE Micromatic, Jyoti, Haas, FANUC ROBODRILL) | Yes | Mounts on standard fixture plates across all major VMC brands |
| HMC fixture plates | Yes | Suited to production tooling where footprint is constrained |
| Confined jig bodies with two adjacent clamping features | Yes | Purpose-built use case |
| Fixtures needing fully independent clamp positioning at each point | Use two single clamps instead | The two clamping points share one mounting hole, so spacing between them is fixed |
The Problem It Solves
Without a double ended clamp, a fixture designer facing a tight two-point clamping requirement has two bad options: force two single clamps into a space that wasn't designed for two mounting points, or redesign the fixture plate to create room that doesn't naturally exist.
Forcing the fit usually means fouled clamp arms, clamps that can't reach full swing clearance, or bolt patterns that interfere with locators. Redesigning the plate costs machining time and delays the build. Either way, the fixture ends up with more fasteners, more parts to source, and more points that can loosen or misalign over repeated cycles.
A double ended clamp removes the layout conflict at the source — it delivers two clamping points in the footprint of one, so the fixture designer never has to force the fit in the first place.
Technical Specifications
Material: Medium carbon steel Heat treatment: Hardened and tempered to 24-32 HRC Surface finish: Chemically blackened Profile: Octagonal, flat block, symmetric (usable from either end) Mounting: Single central mounting hole Clamping points: Two, independent SKU: T1-DEC-1160 Compatibility: Standard T-slot machine tables and fixture plates, all major VMC, HMC, and milling machine brands
Dimensional data (length, width, hole diameter) and load rating were not published in MEW's catalogue reference used for this post — confirm exact dimensions with MEW before finalising a fixture drawing. [VERIFY]
Double Ended Clamp vs Two Separate Single Clamps
| Factor | Double Ended Clamp | Two Single Clamps |
|---|---|---|
| Footprint required | One mounting position | Two separate mounting positions |
| Component count | One part | Two parts, two sets of fasteners |
| Fixture assembly | Fewer points to align and torque | More points to align and torque |
| Best fit | Confined layouts, fixed spacing between points | Layouts with room to spare |
| Point-to-point adjustability | Fixed by the single-body geometry | Each clamp can be positioned independently |
| Sourcing | One SKU to track | Two SKUs to track |
If the fixture has generous space and each clamping point needs to sit at a different height, angle, or distance that changes between jobs, two single clamps give more flexibility. If the space is tight and the two points sit close and roughly fixed relative to each other, the double ended clamp is the simpler, lower-component-count answer.
General fixture-design guidance from industry sources on compact and multi-point clamping (Reid Supply, Fixtureworks) confirms this is a well-established layout strategy: compact clamping hardware exists specifically to solve tight part spacing and confined-space access on fixture plates, not just to save cost.
FAQ
Q: What is a double ended clamp used for? A: A double ended clamp provides two independent clamping points from one component, used in CNC machining fixtures and jig construction where two workpiece features or two separate workpieces need to be clamped in a fixture space too tight for two separate clamps. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: How does a double ended clamp differ from using two single clamps? A: A double ended clamp shares one mounting hole and body between two clamping points, reducing the footprint and component count. Two single clamps each mount independently and can be positioned at different heights or angles, but require more space and more fasteners. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: What material is MEW's double ended clamp made of? A: MEW's double ended clamp (SKU T1-DEC-1160) is medium carbon steel, hardened and tempered to 24-32 HRC, and chemically blackened for corrosion resistance. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: Which machines is the double ended clamp compatible with? A: It is built for standard T-slot machine tables and fixture plates and fits all major VMC, HMC, and milling machine brands, including BFW, ACE Micromatic, Jyoti, Haas, and FANUC ROBODRILL setups. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: Can a double ended clamp hold two different workpieces at once? A: Yes. Because it has two independent clamping points, it can clamp two separate workpiece features on the same part, or two separate workpieces loaded side by side in the same fixture cycle. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: Does the orientation of the double ended clamp matter? A: No. The clamp has a symmetric octagonal profile, so either end can be used as the clamping point — there is no wrong-way installation, which simplifies fixture assembly on the shop floor. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Q: Where can I buy a double ended clamp in Chennai or across India? A: Madras Engineering Works stocks the double ended clamp (SKU T1-DEC-1160) for tool rooms and fixture builders across Chennai, Tamil Nadu, and South India. MEW is ISO 9001:2015 certified. Contact: enquiry@madrasengg.com or WhatsApp +91 95143 73702
Q: Which industries use double ended clamps most? A: Automotive and aerospace component manufacturing, along with general tool room and jig-and-fixture work, use double ended clamps most often — anywhere fixture plates are dense with locators and clamping points need to be compact. Available from Madras Engineering Works, Chennai — enquiry@madrasengg.com
Get the Right Double Ended Clamp for Your Fixture
Whether you're building a new jig or retrofitting a tight fixture layout, Madras Engineering Works stocks the double ended clamp (SKU T1-DEC-1160) for standard T-slot machine tables and fixture plates across all major VMC, HMC, and milling machine brands.
Same-day dispatch from Chennai. ISO 9001:2015 certified supply chain. TVS Authorised Dealer.
📧 enquiry@madrasengg.com 🌐 madrasengg.com 📍 Chennai, Tamil Nadu
Not sure if a double ended clamp fits your layout? WhatsApp +91 95143 73702 with a photo of your fixture area and we'll confirm the fit. Use our Smart-Spec tool to confirm the exact size for your machine in under 60 seconds. See also our guides on strap clamps and pinch clamps for other fixture layout scenarios.
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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