Eaton B321-4ZN Beam Clamps for B-Line - cULus Listed, 2000 lb
Part Number: B321-4ZN
Quick Summary
Eaton B-Line beam clamps provide secure mounting for beam runs in electrical and mechanical installations. In tight spaces or high-load environments, quick, reliable attachments prevent downtime and field rework. This product is cULus Listed, delivering North American safety compliance for critical infrastructure. Compatible with Eaton's B-Line strut systems and 5/8-11 hardware, it delivers robust performance while you optimize installation time and labor cost. The design supports dependable, long-term service in data centers, manufacturing floors, and building services where safety and speed matter most.
Product Information
Extended Description
B321-4ZN Eaton: Eaton B-Line series beam clamps, 3.7188"Hx3.25"Lx0.6250"W, Steel, 2000 load cap, 5/8"-11 rod size, 5/8"-11 screw size, 0.313"beam thickness
Product Name
Eaton B-Line series beam clamps
Catalog Number
B321-4ZN
UPC
781011531430
Product Length/Depth
3.25 in
Product Height
3.71875 in
Product Width
0.625 in
Product Weight
2.39 lb
Certifications
cULus Listed
Beam thickness
0.313 in
Set screw size
5/8"-11
Special features
Safety factor of 5, setscrew included
Thread/rod size
5/8"-11
Type
Beam clamp
Load capacity
2000 lb
Material
Steel
Feature → Business Impact → Application: High load capacity of 2000 lb ensures fixtures and equipment remain secure under dynamic loads, reducing the risk of attachment failure and costly downtime in industrial facilities. This translates to improved uptime for critical systems and faster commissioning in electrical rooms and mechanical spaces where reliability is essential.
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FAQs
The B321-4ZN is designed for seamless integration with Eaton’s B-Line strut systems, utilizing a 5/8-11 thread/rod size and matching beam thickness of 0.313 inches. This compatibility accelerates installation, reduces parts variance, and simplifies field replacements in modular racking and support frameworks.
The clamp provides a 2000 lb load rating with a declared safety factor of 5. This ensures secure mounting for heavy fixtures and equipment while maintaining predictable performance under dynamic or vibration-prone conditions typical in manufacturing and data-center environments.
Yes. Its 2000 lb capacity, 5/8-11 hardware, and cULus Listed certification make it suitable for data centers, electrical rooms, and other critical facilities where reliable, code-compliant beam mounting is required. The clamp’s dimensions also help fit tight cable tray and conduit routing scenarios.
The B321-4ZN is cULus Listed, which confirms conformity with North American safety standards for electrical components. This certification supports code compliance, expedites approvals with inspectors, and reduces risk during system commissioning in commercial and industrial installations.
Plan for standard 5/8-11 hardware, verify beam thickness is 0.313 inches, and preassemble the clamp with the set screw before final mounting. Use the included set screw to achieve a consistent grip, and verify alignment early to minimize readjustments during commissioning in strut-based projects.