Eaton B321-5ZN Beam Clamp - Strut Ready cULus Listed
Part Number: B321-5ZN
Quick Summary
Eaton B321-5ZN beam clamp secures 3/4-10 threaded rods to a 0.313 in beam, ideal for industrial lighting and support systems. In many facilities, vibration, misalignment, and fasteners that loosen over time drive maintenance costs and create safety concerns for critical lighting and equipment hangs. The product is cULus Listed, reflecting adherence to recognized electrical safety standards. With a 2000 lb load rating and a proven 5:1 safety factor, the B321-5ZN delivers dependable, long-life performance. This combination helps streamline procurement, reduces on-site adjustments, and supports reliable, compliant installations in demanding environments.
Product Information
Extended Description
B321-5ZN Eaton: Eaton B-Line series beam clamps, 3.7188"Hx3.25"Lx0.6250"W, Steel, 2000 load, 3/4"-10 rod size, 3/4"-10 screw size, 0.313"beam thickness
Product Name
Eaton B-Line series beam clamps
Catalog Number
B321-5ZN
UPC
781011531539
Product Length/Depth
3.25 in
Product Height
3.71875 in
Product Width
0.625 in
Product Weight
2.38 lb
Certifications
cULus Listed
Beam thickness
0.313 in
Set screw size
3/4"-10
Special features
Safety factor of 5, setscrew included
Thread/rod size
3/4"-10
Type
Beam clamp
Load capacity
2000 lb
Material
Steel
The B321-5ZN is engineered in robust steel with standard 3/4-10 thread and a beam thickness of 0.313 inches, delivering a secure grip on common strut and beam configurations. This translates to reduced maintenance needs and fewer field adjustments, improving installation efficiency for lighting and equipment hangs. The 2000 lb load capacity provides a strong safety margin for heavy fixtures and supports, helping facilities stay compliant with system ratings while enabling fewer clamp replacements over the life of the installation. The 3/4 inch-10 set screw size ensures a reliable clamp connection that remains secure under vibration and thermal cycling typical in industrial spaces. Because the clamp is designed for Eaton B-Line strut systems, it integrates quickly with existing components, minimizing procurement complexity and enabling faster project completion. The cULus Listed certification offers regulatory confidence and streamlined approvals for electrical installations in commercial and industrial facilities, reducing compliance risk on complex builds. A built-in safety factor of 5 further reinforces resilience against unexpected loads and dynamic conditions, while the included setscrew simplifies order fulfillment and on-site assembly. Overall, the B321-5ZN delivers predictable performance, resilient reliability, and a straightforward installation experience in demanding environments.
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FAQs
To install the B321-5ZN, position the clamp around the 0.313 in beam and align the 3/4-10 threaded rod with the clamp’s bore. Tighten the 3/4-10 setscrew securely to lock the rod in place, using an appropriate hex key. Verify the assembly holds with the weight it will support and ensure the load does not exceed 2000 lb per clamp.
The B321-5ZN provides a 2000 lb load rating, with a proven 5:1 safety factor to accommodate dynamic conditions such as vibration and temperature shifts. This combination supports reliable performance for heavy lighting fixtures and equipment mounts, while maintaining adequate margins for unexpected loads and return-to-service scenarios.
Yes. The B321-5ZN is designed for standard 0.313 in beams and uses 3/4-10 thread rods and setscrews, aligning with Eaton B-Line strut system components. This compatibility simplifies procurement, reduces the risk of mismatched parts, and speeds up installation in commercial and industrial facilities.
The B321-5ZN is cULus Listed, reflecting compliance with recognized electrical safety standards. This certification aids regulatory approvals, supports safer construction practices, and helps mitigate compliance-related project risk when deploying lighting and support infrastructure in facilities.
The clamp combines robust steel construction, high load capacity, and fixed fastener geometry to deliver longer service life, fewer field adjustments, and faster installation. Its compatibility with existing B-Line strut systems reduces procurement complexity, while the safety factor and certification support safer, compliant deployments that minimize downtime and maintenance costs.