Self-Clinching Blind Standoffs Technical Datasheet
Product Overview
Through standoffs are self-clinching threaded fasteners designed to provide permanent, load-bearing female threads in thin sheet metal panels. Once installed using a press-in process, the standoff becomes an integral part of the sheet, eliminating the need for welding, tapping, or loose hardware.
These fasteners are widely used in electrical enclosures, control panels, telecommunication equipment, electronic assemblies, data centers, automotive components, and industrial machinery where reliable spacing and threaded attachment points are required. Through standoffs are available in blind and through-hole configurations and can be installed in steel, stainless steel, and aluminum sheets depending on the material grade selected.
ITEM CODE: 5019
Standards
Primary Standard: PEM® Type BSO, BSOS, BSO4 equivalent
Dimensions
| Thread Code | Min. Sheet Thickness | Hole Size In Sheet (+0.08) | C (-0.13) | H Nom. | Min. Dist. Hole To Edge | F Min. |
|---|---|---|---|---|---|---|
| M3 | 1 | 4.22 | 4.2 | 4.8 | 6 | Varies according to length |
| 3.5M3 | 1 | 5.41 | 5.39 | 6.4 | 6.8 | |
| M3.5 | 1 | 5.41 | 5.39 | 6.4 | 6.8 | |
| M4 | 1.27 | 7.14 | 7.12 | 7.9 | 8 | |
| M5 | 1.27 | 7.14 | 7.12 | 7.9 | 8 |
all dimensions in mm
Download Datasheets
Self Clinching Blind Standoff – BSO – Steel Zn
Self Clinching Blind Standoff – BSOS – Stainless Steel 300 series
Self Clinching Blind Standoff – BSO4- Stainless steel 400 series
Material Characteristics and Recommended Applications
| Material | Characteristics | Typical Applications |
|---|---|---|
| Carbon Steel (Case Hardened, Zinc Plated) | High strength, economical, excellent clinching performance in mild steel sheets | Electrical panels, switchgear, industrial enclosures, machinery |
| Stainless Steel 300 Series | Good corrosion resistance, non-magnetic, suitable for stainless steel and corrosive environments | Telecom cabinets, food processing equipment, medical devices, outdoor enclosures |
| Stainless Steel 400 Series | Heat treatable, high hardness, magnetic, specifically designed for installation in stainless steel sheets | Stainless steel enclosures, data centers, telecom equipment, industrial sheet metal fabrication |
Technical Specifications
| Property | Specification |
|---|---|
| Product Type | Self-Clinching Blind Standoff |
| Thread Sizes | M3 to M5 (standard range) |
| Material Options | Carbon Steel, Stainless Steel |
| Installation Method | Press-in installation |
| Mounting Side | Single-side installation |
| Thread Type | Metric / Unified |
| Sheet Compatibility | Steel, Stainless Steel, Aluminum |
| Minimum Sheet Thickness | Depends on size and series |
| Torque Resistance | High |
| Push-Out Resistance | High |
| Reusability | Permanent installation with reusable threads |
| Corrosion Resistance | Depends on material and finish |
Applications
- Electrical control panels
- Sheet metal enclosures
- Telecom cabinets
- Data center racks and equipment
- IT enclosures
- Server cabinets
- Medical equipment
- Automotive electronics
- Industrial machinery
- Renewable energy equipment
- Defense electronics
- Instrumentation panels
- Consumer electronics
- Railway and transportation equipment
Advantages
- Permanent threaded standoff solution for thin sheet metal
- Eliminates welding and tapping operations
- Provides high torque-out and push-out resistance
- Allows installation from one side of the sheet
- Maintains clean and professional appearance
- Suitable for automated assembly processes
- Available in multiple material combinations
- Enables consistent spacing between components
- Reduces assembly time and manufacturing cost
- Provides reusable internal threads
Related Products
- Self Clinching Studs
- Self Clinching Standoffs
- Self Clinching Nuts
- Self Clinching Blind Fasteners
- Captive Panel Screws
- Nut Inserts
- Weld Studs
Frequently Asked Questions
What is a self-clinching blind standoff?
A self-clinching blind standoff is a press-fit threaded spacer that permanently installs into sheet metal to provide a durable female thread and maintain spacing between assembled components.
What is the difference between BSO, BSOS, and BSO4 series?
The BSO is steel with zinc plating. BSOS is stainless steel 300 series, and BSO4 is stainless steel 400 series.
Can through standoffs be installed in stainless steel sheets?
Yes. Specific stainless steel versions are designed for installation into stainless steel sheets.
What installation equipment is required?
Installation is typically performed using a press capable of applying the recommended installation force uniformly.
Can through standoffs replace welded spacers?
Yes. Self-clinching standoffs eliminate welding operations while providing excellent mechanical performance and assembly efficiency.
Technical Disclaimer
The technical information, specifications, dimensions, mechanical properties, drawings, and performance data provided on this website are intended for general reference and engineering guidance only. Values shown are representative of products manufactured under normal production conditions and may vary depending on material grade, manufacturing tolerances, installation method, application, and operating environment.
While Horizon Inc. makes every reasonable effort to ensure the accuracy of the information provided, we make no warranties, express or implied, regarding its completeness, accuracy, or suitability for any particular purpose. Customers are responsible for verifying that the selected product is appropriate for their specific application and operating conditions. Where safety, structural integrity, or regulatory compliance is critical, independent engineering evaluation and product testing should be performed.
Horizon Inc. reserves the right to modify product specifications, dimensions, materials, and technical data without prior notice.
To the fullest extent permitted by applicable law, Horizon Inc. shall not be liable for any direct, indirect, incidental, consequential, or special damages arising from the use of, or reliance upon, the information contained on this website.
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