Name: EVT40C-BLC – Black Truss Clamp with Stainless Steel Hardware
Brand: Evolve Truss
SKU: EVT40C-BLC
Price: 16.00 USD
Availability: InStock

40 mm Black Truss Clamp Knowledge Center

Low-Visibility Mounting for 38–40 mm Tubing.
A Black Aluminum Clamp with Corrosion-Resistant Stainless-Steel Hardware.

The EVT40C-BLC is a black light-duty aluminum clamp designed for compatible 38–40 mm tubing. It combines a 6061-T6 aluminum body with 304 stainless-steel hardware, an M6 x 10 mm attachment screw, an M8 nylon-insert locknut, and a documented maximum load of 100 kg.

Product Facts

ModelEVT40C-BLC

Tube Range38–40 mm

Maximum Load220 lb / 100 kg

Profile Width30 mm

Product Weight0.28 lb

Body Material6061-T6 Aluminum

38–40 mmTube Compatibility

100 kgMaximum Load

30 mmProfile Width

0.28 lbProduct Weight

M6 x 10 mmAttachment Screw

Product Overview

A Black Clamp for 38–40 mm Tubing.

The EVT40C-BLC provides a low-visibility mounting point for compatible fixtures and accessories used with 38–40 mm truss chords, tube, or pipe.

38–40 mm Tube Range

Designed for compatible tubing within the documented outside-diameter range.

6061-T6 Aluminum Body

Provides a lightweight clamp body for repeated professional use.

304 Stainless-Steel Hardware

Supports corrosion resistance at the attachment and fastening points.

Black Finish

Blends into black truss, lighting, scenic, and exhibit installations.

Compact 30 mm Profile

Keeps the clamp narrow for light-duty staging, lighting, and display applications.

Applications

Designed for Lighting, Staging, AV, Exhibits, and Display Hardware.

Light-Duty Lighting Fixtures

Supports compatible fixtures within the clamp and supporting-structure load limits.

Stage and AV Hardware

Provides a compact attachment point for properly rated production accessories.

Trade Show Displays

Suitable for accent lighting, signage, and exhibit accessories mounted to compatible tubing.

Scenic Installations

Supports temporary decorative and production hardware when properly rated.

Compatible Tube Systems

Fits truss chords, tube, or pipe measuring 38–40 mm outside diameter.

Who It Is For

Built for Lighting, AV, Exhibit, Rental, and Stage Professionals.

Lighting Technicians

For mounting compatible lightweight fixtures to 38–40 mm tubing.

AV Integrators

For compact attachment of properly rated production accessories.

Exhibit Builders

For signage, accent lighting, and temporary display hardware.

Rental Companies

For reusable 40 mm-class clamp inventory across event applications.

Stage Technicians

For light-duty installations requiring documented tube compatibility.

Functional Details

Corrosion-Resistant Hardware with A Low-Visibility Black Finish.

M6 x 10 mm Attachment Screw

A flanged button-head cap screw provides the documented fixture attachment point.

M8 Nylon-Insert Locknut

Secures the collar around the tube when correctly installed and inspected.

304 Stainless-Steel Hardware

Provides added corrosion resistance compared with ordinary carbon-steel hardware.

30 mm Profile Width

Keeps the clamp compact for small fixtures and accessories.

Technical Details

Detailed Specifications.

Identification

Product Information

Model / SKUEVT40C-BLC

Product TypeLight-Duty Aluminum Truss Clamp

Nominal Tube Class40 mm / 1.57 in

Fit and Profile

Tube Compatibility

Minimum Tube Size38 mm

Maximum Tube Size40 mm

Profile Width30 mm

Product Weight0.28 lb

Construction

Materials

Clamp Body6061-T6 Aluminum Alloy

Hardware304 Stainless Steel

FinishBlack

Hardware and Loading

Attachment Details

Attachment ScrewM6 x 10 mm Flanged Button-Head Cap Screw

Collar FastenerM8 Nylon-Insert Locknut

Maximum Load220 lb / 100 kg

Truss Compatibility

Designed for 38–40 mm Truss Chords, Tube, and Pipe.

Compatibility depends on the actual outside diameter, tube condition, clamp seating, attachment hardware, and load requirements of the complete installation.

38 mm Minimum

Do not install on tubing smaller than the documented minimum diameter.

40 mm Maximum

Do not force the clamp onto tubing larger than the documented maximum diameter.

Truss, Tube, or Pipe

Suitable for compatible structural members within the documented diameter range.

Verify Before Use

Confirm actual diameter, wall condition, seating, and engineering requirements before loading.

Installation Sequence

Secure the Collar with the M8 Nylon-Insert Locknut.

01 — Verify Tube Diameter

Confirm the supporting member measures between 38 mm and 40 mm outside diameter.

02 — Inspect the Clamp

Check the aluminum body, M6 attachment screw, M8 locknut, washer, and threads.

03 — Release the Locknut

Turn the nylon-insert locknut counterclockwise to release the bolt and open the collar.

04 — Position and Close

Place the clamp on the truss, tube, or pipe, close the collar, and return the bolt, washer, and locknut to position.

05 — Tighten Clockwise

Confirm final placement, then tighten the nylon-insert locknut until the clamp is secure.

06 — Add Secondary Safety

Use an independently rated safety cable whenever required.

Inspection and Maintenance

Inspect Before Every Use. Remove Damaged Hardware from Service.

Clamp Body

Check for cracks, deformation, deep gouges, corrosion, or impact damage.

M6 Attachment Screw

Inspect the screw and threads for stretching, stripping, galling, or contamination.

M8 Locknut

Confirm the nylon insert is intact and the locknut turns and seats correctly.

Washer and Collar

Verify all hardware is present and the collar closes evenly around the supporting member.

Tube Contact Surfaces

Keep contact areas clean and free from debris that could prevent full seating.

Safety and Load Limits

Treat the Clamp Rating as One Part of the Complete Installation.

Do not exceed the documented 100 kg / 220 lb maximum load.

The supporting truss, tube, pipe, fixture, attachment hardware, safety cable, and all connected components must also be properly rated.

Use the clamp only on members within the documented 38–40 mm outside-diameter range.

Inspect the EVT40C-BLC before use and remove damaged or defective clamps from service.

Use an independently rated safety cable for overhead fixtures whenever required.

Do not modify, drill, grind, weld, or heat the clamp body.

A licensed professional engineer should review structures, lighting plots, and other clamp uses where required.

Frequently Asked Questions

EVT40C-BLC Questions.

What tube sizes fit this clamp?

The documented compatibility range is 38 mm minimum to 40 mm maximum outside diameter.

What is the maximum load?

The source lists a maximum load of 100 kg / 220 lb. The complete installation may have a lower allowable load.

What hardware is included?

The documented hardware includes an M6 x 10 mm flanged button-head cap screw, washer, and M8 nylon-insert locknut.

What finish does the clamp use?

The EVT40C-BLC uses a black finish for a low-visibility appearance in black truss, stage, lighting, and exhibit installations.

What materials are used?

The clamp body is made from 6061-T6 aluminum alloy, while the fastening hardware is 304 stainless steel.

How much does the clamp weigh?

The documented product weight is approximately 0.28 lb.

Can it mount to pipe or tube as well as truss?

Yes, when the supporting member measures within the documented 38–40 mm outside-diameter range and the complete installation is properly rated.

Is a safety cable recommended?

Yes. Use an independently rated secondary safety whenever required by code, venue policy, or the fixture manufacturer.

Need the correct clamp for your fixture and truss?

Contact us for clamp selection, fixture compatibility, truss matching, rigging guidance, CAD resources, and quantity pricing.

Structural Solutions, Unmatched Innovation

EVT40C-BLC

Low-Visibility Mounting for 38–40 mm Tubing. A Black Aluminum Clamp with Corrosion-Resistant Stainless-Steel Hardware.