Self-Clinching & Weld Fasteners

Low Displacement Flush Head Studs

Flush studs that disturb the sheet very little, close to edges.

Section: Self-clinching
Type: Studs & pins

Overview

Low displacement studs need less installation force and displace less material, so they can be placed closer to the edge of the sheet and to bends without distorting the part.

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 numbers	SG-FHL, SG-FHLS
Zinc Plated Steel	SG-FHL
Stainless Steel	SG-FHLS
Sizes	M2.5, M3, M4, M5
Sheet hardness (SG-FHL)	HRB 80 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)

Thread	M2.5	M3	M4	M5
D ±0.4	3.15	3.65	4.65	5.9
H max.	2.1	2.1	2.4	2.7
Min. sheet thickness	1.0
Recommended hole size +0.08	2.5	3.0	4.0	5.0
Min. distance to edge of sheet	2.8	3.3	4.3	5.6

Preferred lengths L ±0.4 (mm)

Length L	M2.5	M3	M4	M5
6	•	•	•	•
8	•	•	•	•
10	•	•	•	•
12	•	•	•	•
15	•	•	•	•
18	•	•	•	•
20		•	•	•
25		•		•
30			•

Performance data: SG-FHL / SG-FHLS

Thread	M2.5	M3	M4	M5
Test sheet thickness (mm) – aluminium	1.2	1.2	1.2	1.2
Test sheet thickness (mm) – steel	1.1	1.1	1.1	1.1
Installation (kN) – aluminium	3.2	4.5	5.4	11.1
Installation (kN) – steel	5.4	5.4	6.7	20.1
Pushout (N) – aluminium	286	286	370	535
Pushout (N) – steel	451	476	555	1010
Torque-out (Nm) – aluminium	0.56	0.66	1.2	2.2
Torque-out (Nm) – steel	1.2	1.3	2.2	4.5
Pull through (N) – aluminium	1250	1300	1560	1900
Pull through (N) – steel	2290	2550	3350	3760