Self-Clinching Blind Nuts Technical Datasheet
Product Overview
Self-Clinching Blind Nuts provide permanent load-bearing threads in thin sheet metal where access is available from only one side of the sheet after installation. Unlike through self-clinching nuts, blind nuts feature a closed-end design that prevents screws from protruding through the back, making them ideal for sealed enclosures, electrical cabinets, electronic equipment and applications where debris, moisture or contaminants must be prevented from entering the assembly.
The fastener is permanently installed by pressing it into a properly sized hole using a parallel squeezing force. During installation, the sheet metal cold flows into the clinching groove, creating high resistance to push-out and torque-out without welding or secondary operations.
Table of Contents
ITEM CODE: 5014
Standards
Primary Standard: PEM® Type B, BS equivalent
Installation
- Prepare properly sized mounting hole in the sheet.
- Do not perform any secondary operations such as deburring.
- Place the barrel of the fastener into the anvil hole and place
the mounting hole (preferably the punch side) over the shank
of the fastener. - With the installation punch and anvil surfaces parallel, apply
squeezing force until the flange contacts the mounting
sheet.
Dimensions
| Size | Shank Code | A max | Min sheet thickness | Hole Size | B max | C max | E | F min | L max | T | Min Dist from Hole |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M3 | 1 | 0.97 | 1 | 4.22 | 3.84 | 4.2 | 6.35 | 5.3 | 8.5 | 9.6 | 4.8 |
| 2 | 1.38 | 1.4 | |||||||||
| M4 | 1 | 0.97 | 1 | 5.41 | 5.2 | 5.38 | 7.95 | 7.1 | 9.8 | 11.2 | 6.9 |
| 2 | 1.38 | 1.4 | |||||||||
| M5 | 1 | 0.97 | 1 | 6.35 | 6.02 | 6.33 | 8.75 | 7.1 | 9.8 | 11.2 | 7.1 |
| 2 | 1.38 | 1.4 | |||||||||
| M6 | 1 | 1.38 | 1.4 | 8.75 | 7.8 | 8.73 | 11.1 | 7.8 | 12.7 | 14.3 | 8.6 |
| 2 | 2.21 | 2.29 |
all dimensions in mm
Download Datasheets
Self Clinching Blind Nut – Steel – B, Stainless Steel – BS
Material Characteristics and Recommended Applications
| Material | Characteristics | Typical Applications |
|---|---|---|
| Zinc Plated Steel | High strength, economical | General industrial equipment, electrical enclosures |
| Stainless Steel 300 Series | Excellent corrosion resistance | Food processing, medical equipment, outdoor cabinets |
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Self-Clinching Blind Nut |
| Installation Method | Press Fit / Self-Clinching |
| Thread Type | ISO Metric |
| Thread Sizes | M3 – M6 |
| Sheet Access | One side only for installation |
| Sheet Material | Steel, Stainless Steel, Aluminium |
| Sheet Hardness | Sheet should be softer than the fastener |
| Installation Equipment | Hydraulic Press, Pneumatic Press or Arbor Press |
| Mounting Hole | Precision punched or drilled hole |
| Thread Style | Blind (Closed End) |
| Reusability | Permanent installation |
| RoHS Compliance | Available |
Applications
- Electrical Control Panels
- Electronic Enclosures
- Telecom Cabinets
- Server Racks
- Data Centre Equipment
- HVAC Equipment
- Medical Devices
- Instrumentation Panels
- Railway Electronics
- Aerospace Interiors
- Battery Packs
- EV Charging Equipment
- Industrial Automation
- Defence Electronics
Advantages
- Provides permanent load-bearing threads in thin sheet metal
- Blind end prevents screw penetration through the rear of the panel
- Helps seal enclosures against dust and contaminants
- High resistance to push-out and torque-out
- Installs quickly using simple press equipment
- Eliminates welding, tapping and loose hardware
- Suitable for automated assembly
- Ideal for thin sheets where tapped threads are not practical
- Maintains clean external appearance
- Available in multiple materials for corrosion resistance
Frequently Asked Questions
What is a self-clinching blind nut?
A self-clinching blind nut is a permanently installed threaded fastener with a closed end that prevents screws from passing completely through the panel.
What is the difference between B and BS series?
B Series – Low carbon steel.
BS Series – Stainless steel.
Both follow the same installation principle but differ in material and corrosion resistance.
Why use a blind nut instead of a through self-clinching nut?
Blind nuts prevent screw protrusion and help maintain sealed enclosures, making them ideal for electrical and electronic equipment.
Are these reusable?
The installed fastener is permanent, but the mating screw can be removed and reinstalled multiple times.
What installation equipment is required?
A parallel acting hydraulic press, pneumatic press or arbor press is recommended. Hammer installation is not recommended.
Need Technical Assistance or a Quote?
Looking for pricing, samples, CAD drawings, or help selecting the right fastener? Our team can help you choose the correct product for your application.
📧 sales@horizonincindia.com | 📞 +91 80 4117 9152 | 💬 +91 99167 77262
Related Products
- Self Clinching Studs
- Self Clinching Standoffs
- Self Clinching Nuts
- Self Clinching Blind Fasteners
- Captive Panel Screws
- Nut Inserts
- Weld Studs
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