SELF-CLINCHING STAND-OFFS are designed to serve as spacers or distance pieces. A simple squeezing action embeds the hexagonal head into the sheet causing the displaced metal to flow into the clinching groove.
Advantages
- Available in a range of spacer lengths
- Remains mechanically clinched in sheet
- For heavy duty applications LSS (Larger Support Surface) types are available (3.5M3 - 6440 - 8632)
- Through threaded and blind threaded ranges
- Always perpendicular to panel
- Plain hole versions available to special order
Design Guide
Hole Size
Holes must be held to a tolerance of -.000” +.003” (-0.00mm +0.08mm) Therefore punched holes are recommended.
Holes should not be de-burred or countersunk.
Installation
Must always be carried out using a squeeze action – NEVER a shock load.
Maximum Sheet Hardness
Rb80 for hardened steel fasteners (P-SO & P-BSO)
Rb70 for stainless steel fasteners (P-SOS & P-BSOS)
Rb50 for aluminium fasteners (P-SOA & P-BSOA)
Heavy Duty Use
Where heavy duty use is anticipated, P-SO and P-BSO fasteners in the smaller thread sizes may be specified in larger body sizes offering greater wall thickness.
(For example: M3 in M3.5 body size would be coded 3.5M3 and 4.40UNC in 6.32UNC body size would be coded 6440 (see dimension charts).
Technical Data
P-SO Through Hole Type (Metric)
MATERIAL CODES
P-SO – Hardened Steel Zinc Plated
P-SOS – Stainless Steel
P-SOA – Aluminium
STANDARD PLATING FINISH
Zinc & Clear Trivalent Passivation (Z)
General Dimensions
All dimensions in millimeters.
Thread & Length Data
How to Specify
Technical Data
P-SO Through Hole Type (Unified)
MATERIAL CODES
P-SO – Hardened Steel Zinc Plated
P-SOS – Stainless Steel
P-SOA – Aluminium
STANDARD PLATING FINISH
Zinc & Clear Trivalent Passivation (Z)
General Dimensions
Thread & Length Data
How to Specify
Technical Data
P-BSO Blind Hole Type (Metric)
MATERIAL CODES
P-BSO – Hardened Steel Zinc Plated
P-BSOS – Stainless Steel
P-BSOA – Aluminium
STANDARD PLATING FINISH
Zinc & Clear Trivalent Passivation (Z)
General Dimensions
All dimensions in millimeters
Thread & Length Data
How to Specify
Technical Data
P-SO Blind Hole Type (Unified)
MATERIAL CODES
P-BSO – Hardened Steel Zinc Plated
P-BSOS – Stainless Steel
P-BSOA – Aluminium
STANDARD PLATING FINISH
Zinc & Clear Trivalent Passivation (Z)
General Dimensions
Thread & Length Data
How to Specify
How to Assemble
Self-Clinching Stand Offs are easy to install because no special tooling is necessary. However, it is very important to note that they must always be installed by a squeeze action press rather than a hammer blow. Punched holes are always recommended.
Methods
- Punch a hole in the metal sheet to the size recommended in our technical data table. De-burring of the hole is not recommended.
- Insert the stand-off through the hole in sheet and into the “anvil” as shown in the drawing.
- Apply squeezing pressure sufficient to embed hexagonal head flush in sheet.
Performance Data (Metric)
Performance Data (Unified)
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