Concealed Head Studs
Self-Clinching & Weld Fasteners

Concealed Head Studs

Studs fitted into a blind hole so the reverse side stays untouched.

Section
Self-clinching
Type
Studs & pins
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Overview

Concealed head studs install into a blind (not through) hole, so the opposite face of the panel stays smooth, unmarked and ready for finishing.

Full dimensions, preferred lengths and installation / push-out / torque-out performance data are in the tables below, taken from the self-clinching fasteners catalogue.

Specifications

Part numbersSG-CHC, SG-CFHC, SG-CHA, SG-CFHA
Stainless SteelSG-CHC, SG-CFHC
AluminiumSG-CHA, SG-CFHA
SizesM3, M4, M5
Sheet hardness (SG-CHC/CFHC)HRB 70 or less

Dimensions & performance data

All dimensions in mm unless stated. Values from the self-clinching fasteners catalogue. Install into sheet within the hardness limits shown in the specifications.

Dimensions (mm)

ThreadM3M4M5
D ±0.45.218.338.89
C max.4.357.357.9
Blind mounting hole ±0.084.377.377.93
Min. distance to edge of sheet4.05.66.4
Hole in mating part +0.083.64.65.6
Hole depth – SG-CHC / SG-CHA1.10
Hole depth – SG-CFHC / SG-CFHA1.91
A max. – SG-CHC / SG-CHA1.04
A max. – SG-CFHC / SG-CFHA1.80
Min. sheet thickness – SG-CHC / SG-CHA1.60
Min. sheet thickness – SG-CFHC / SG-CFHA2.40

Preferred lengths L ±0.4 (mm)

Length LM3M4M5
6••
8••
10••
12•••
16•••
20••
25•

Performance data: SG-CHC / SG-CFHC / SG-CHA / SG-CFHA

ThreadM3M4M5
Installation (kN) – stainless steel SG-CHC8.017.822.2
Installation (kN) – stainless steel SG-CFHC8.914.717.8
Installation (kN) – aluminium SG-CHA6.212.517.8
Installation (kN) – aluminium SG-CFHA6.713.315.6
Pushout (N) – stainless steel SG-CHC106512001290
Pushout (N) – stainless steel SG-CFHC106519553020
Pushout (N) – aluminium SG-CHA555645755
Pushout (N) – aluminium SG-CFHA84510651330
Max. tightening torque (Nm) – stainless steel SG-CHC0.52.03.6
Max. tightening torque (Nm) – stainless steel SG-CFHC0.52.03.6
Max. tightening torque (Nm) – aluminium SG-CHA0.31.22.16
Max. tightening torque (Nm) – aluminium SG-CFHA0.31.22.16

Key features

  • Reverse side stays clean
  • Stainless and aluminium
  • No through hole needed

Applications

Front panelsDisplay casesCosmetic surfacesInstrument fascias
Need a size, grade or finish not listed?We also supply special and non-standard parts to drawing.Send enquiry

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