Eaton B321-4SS4 Beam Clamps - cULus Listed
Part Number: B321-4SS4
Quick Summary
Eaton B321-4SS4 Beam Clamps securely grip beams for overhead support in electrical and mechanical installations across industrial facilities. When projects scale, the risk of slippage, rework, or damaged hardware can drive up costs and extend timelines; these clamps are designed to minimize that risk with a robust 1800 lb load rating and a 5x safety factor. The product is cULus Listed and manufactured in stainless steel Type 304, providing excellent corrosion resistance in damp environments and helping you meet safety and compliance requirements. For teams standardizing on Strut Systems, these clamps offer reliable compatibility, straightforward installation, and reduced maintenance, supporting faster commissioning and longer service life without compromising safety or performance.
Product Information
Extended Description
B321-4SS4 Eaton: Eaton B-Line series beam clamps, 1800 lb, Steel, Safety factor of 5, setscrew included, Beam clamp, 5/8"-11 thread/rod size, 5/8"-11 screw size, 1-11/16” beam thickness, Stainless steel type 304
Product Name
Eaton B-Line series beam clamps
Catalog Number
B321-4SS4
UPC
799038512196
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
1800 lb
Material
Steel
Feature → Business Impact → Application: The B321-4SS4 carries an 1800 lb load rating with a safety factor of 5, delivering predictable performance in critical support applications and reducing the need for multiple clamp redundancies on busy installations. This translates to measurable efficiency gains during assembly and commissioning, especially in large electrical and mechanical runs across facilities. Application: Overhead support in cable trays and fixture mounting within data centers, factories, and warehouses. Feature → Business Impact → Application: Stainless steel type 304 construction provides superior corrosion resistance, extending service life in humid or corrosive environments and lowering maintenance costs over the lifecycle of the installation. Application: Outdoor or damp indoor environments where water exposure or humidity is common. Feature → Business Impact → Application: The setscrew included with the clamp and the 5/8"-11 thread/rod size enable rapid, secure fastening, reducing install time and minimizing rework due to loosened connections. Application: Quick-beam tie-offs and modular reconfiguration in evolving layouts. Feature → Business Impact → Application: Beam thickness compatibility of 1-11/16" supports standard industrial beams, simplifying selection and ensuring a reliable fit across common structural profiles. Application: Construction and retrofit projects where beam dimensions are defined by standard specs. Feature → Business Impact → Application: 5/8"-11 thread/rod size compatibility and the 0.313 in beam thickness specification streamline procurement and compatibility with existing strut systems, reducing the need for adapters or custom hardware. Application: Systems integration with Eaton Strut catalog families and field installs requiring standardized hardware. Feature → Business Impact → Application: cULus Listed certification provides clear compliance signaling for electrical installations, aiding approvals and reducing audit risk. Application: Code-compliant installations in commercial, industrial, and data-center environments. Feature → Business Impact → Application: Road-tested performance data and a safety-aware design help procurement justify lifecycle costs with longer intervals between maintenance and parts replacement. Application: Asset management and total cost of ownership analyses for capital projects.
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FAQs
The B321-4SS4 is designed for 5/8"-11 thread/rod size and accommodates beam thickness up to 0.313 inches, with a 1-11/16" beam thickness specification. This makes it compatible with standard industrial strut and beam profiles, simplifying parts selection and reducing the need for adapters during installation.
The 1800 lb load rating, combined with a safety factor of 5, provides a conservative, reliable performance envelope for overhead supports. This reduces the likelihood of under-spec hardware, minimizes rework due to overloading, and supports safer, longer-lasting installations in electrical and mechanical service runs.
Yes. The clamp is manufactured from stainless steel type 304, which offers excellent corrosion resistance in damp or mildly corrosive environments. This makes it well-suited for indoor facilities with humidity, as well as outdoor installations where exposure to moisture is possible.
The B321-4SS4 is cULus Listed, signaling adherence to UL safety standards for electrical equipment. This certification supports code compliance, expedites approvals with inspectors, and reduces project risk for facilities relying on UL-listed hardware in critical support systems.
Absolutely. With built-in setscrew installation, 5/8"-11 compatibility, and standard 0.313 inch beam thickness, the clamp enables rapid assembly and straightforward reconfiguration. The corrosion-resistant material and UL-listed certification also contribute to longer service intervals and lower lifecycle maintenance costs for Strut Systems deployments.