Round Weld Spacer, Zinc Plated

Core Features

Round Cylindrical Configuration – The spacer body is formed with a circular cross-section and a central clearance hole that accommodates a male-threaded fastener passing through the component. This configuration supports vertical alignment and consistent spacing between stacked components.

Weldable Design – The component is constructed from weldable material grades and features a geometry compatible with welding attachment to base workpieces. The flat end faces provide contact surfaces for electrode placement during welding operations.

Zinc Plated Finish – The coating provides a barrier layer against corrosion through zinc sacrificial protection, with defined coating thickness and salt spray test performance specified by applicable coating standards.

Unthreaded Clearance Hole – The central hole is designed with an inside diameter that provides clearance for the fastener shank, allowing the spacer to be used with standard bolts and screws without thread engagement .

Product Characteristics

The spacer is manufactured with an outer diameter dimensioned to provide the required load-bearing surface and a central hole that accommodates the specified fastener size. The cylindrical shape maintains consistent spacing by preventing the collapse of components under clamping load, particularly when tightening bolts to achieve the required friction fit in assemblies such as flange hinge applications.

Material composition is controlled to meet the specified strength and weldability requirements. Carbon steel grades are available for general applications requiring welding, with material selection affecting column strength and load-bearing capacity. Zinc plating is applied through an electroplating process, with coating thickness maintained within specified tolerances to ensure consistent surface protection while preserving dimensional tolerances.

The component is available in various diameter and length combinations. Wall thickness options may be specified based on application strength and weight requirements, with standard and heavy-duty configurations addressing different clamping load and bearing surface needs .

Application Scenarios

Structural Frame Assembly – Used in welded frame construction where spacers provide defined standoff distances between mounting surfaces and structural members, maintaining clearance for component installation or alignment.

Bracket and Panel Mounting – Applied in mounting configurations where spacers maintain distance between stacked brackets, panels, or enclosures, allowing fasteners to pass through the clearance hole without engaging the spacer threads .

Automotive Body and Frame – Utilized in vehicle assembly where spacers are welded to frame rails or body panels to establish fixed attachment points for subsequent bolted connections.

Industrial Equipment – Employed in machinery frames and assemblies where components require consistent vertical spacing and where welded attachment provides permanent positioning of the spacer relative to the base structure.

Customization Options

Specifications and configurations can be adjusted based on application requirements. Outer diameter, inner diameter, and overall length dimensions are customizable according to application geometry. Material grades include carbon steel for weldable applications and stainless steel for corrosion-resistant requirements. Surface treatments are selectable according to environmental exposure conditions, including zinc plating with alternative finishes, zinc flake coating, nickel plating, and phosphate coating.

Frequently Asked Questions

Q: What is the difference between a weldable spacer and a standard spacer?
A: A weldable spacer is manufactured from material grades and with geometries compatible with welding attachment to a base workpiece, enabling permanent positioning. Standard spacers are typically used with mechanical fasteners only and are not designed for welding attachment.

Q: What is the purpose of the unthreaded clearance hole?
A: The clearance hole accommodates a bolt or screw passing through the spacer without engaging threads, allowing the spacer to function as a standoff component. The fastener secures the assembly while the spacer maintains the required distance between components .

Q: Can these spacers be reused after welding?
A: The welded configuration is intended for permanent installation. Once welded to a workpiece, the spacer is fixed in position and cannot be removed without destructive methods. For applications requiring removal or repositioning, non-welded spacer configurations should be considered.

Q: What welding methods are compatible with this product?
A: The spacer can be attached using welding processes compatible with the spacer material grade and workpiece material, provided the application-specific welding parameters are set accordingly.

Q: What is the column strength of these spacers?
A: The column strength is determined by material grade, wall thickness, and overall length. Roll-formed spacers typically provide approximately 70% of the column strength of equivalent machined tube or pipe sections of similar dimensions and material. Heavy-wall configurations provide increased column strength and load-bearing capacity .

Q: Are these spacers available in non-standard lengths?
A: Custom lengths can be manufactured upon request, subject to tooling availability and minimum order quantity requirements.

Installation Considerations

Pre-weld surface preparation should include removal of oil, grease, and oxide layers from the spacer contact area and workpiece surface to support weld consistency. The spacer should be positioned with the end face in full contact with the workpiece surface. Welding parameters require calibration according to spacer material grade, thickness, and equipment specifications. For zinc plated spacers, the coating may affect weld quality; welding parameters should be adjusted or coating removed from the weld area prior to welding. Post-weld inspection should verify fusion quality through visual examination. For bolted assemblies using the spacer, the fastener should pass through the clearance hole without thread interference, and torque should be applied according to the assembly specification.