Self-Clinching & Weld Fasteners

Blind Nuts

Closed-end clinch nuts that seal and protect the thread.

Section: Self-clinching
Type: Nuts

Overview

Blind nuts have a closed barrel that protects the screw thread and seals the panel against water, dust and paint. They also stop a long screw damaging parts behind the panel.

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-B, SG-BS
Zinc Plated Steel	SG-B
Stainless Steel	SG-BS
Sizes	M3, M4, M5, M6
Sheet hardness (SG-B)	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	M3		M4		M5		M6
Shank code	1	2	1	2	1	2	1	2
A max.	0.97	1.38	0.97	1.38	0.97	1.38	1.38	2.21
Min. sheet thickness	1.0	1.4	1.0	1.4	1.0	1.4	1.4	2.29
Recommended hole size +0.08	4.22		5.41		6.35		8.75
B max.	4.20		5.38		6.33		8.73
C max.	3.84		5.2		6.02		7.8
D ±0.25	6.35		7.95		8.75		11.1
E min.	5.3		7.1		7.1		7.8
H ±0.25	9.6		11.2		11.2		14.3
L max.	8.5		9.8		9.8		12.7
Min. distance to edge of sheet	4.8		6.9		7.1		8.6

Performance data: SG-B / SG-BS (test sheet: steel)

Thread	M3		M4		M5		M6
Shank code	1	2	1	2	1	2	1	2
Sheet thickness (mm)	1.0	1.4	1.0	1.4	1.0	1.4	1.4	2.3
Installation (kN)	11.5	14.0	16.0	21.0	18.0	25.0	26.0	26.0
Pushout (N)	572	1021	604	1256	631	1419	1782	1782
Torque-out (Nm)	1.7	2.15	3.5	5.1	4.1	6.9	11.9	12.0