BSL® self-clinching nuts can be used for embedded self-clinching connections on automotive sheet metal, providing high-strength, high anti-rotation internal thread support for the fastening of other metal parts.
About self-clinching nuts
BSL® self-clinching nuts are divided into flanged self-clinching nuts and self-clinching self-clinching nuts.
| distinguish | picture | Structure and function | Installation Environment |
| Flanged type | 1）Concave flange and triangular rib anti-rotation tooth structure
2）After riveting, the contact surface of the sheet metal is large and the anti-rotation performance is high 3）Specification：M6-M12 |
Suitable for thicker sheet metals of 2.0-5.0mm, with high requirements for anti-rotation performance and high connection strength | |
| Self-fastening | 1）There are dense sun teeth
2）The sheet metal contact surface is small after riveting, and the sun gear can automatically stop when tightening the bolts. 3）Specification：M3-M10 |
Suitable for thinner sheet metal with a thickness of 0.8-3.2mm, with average anti-rotation performance and connection strength |
The rivet nuts should be subjected to quenching and tempering heat treatment to obtain the required connection strength.
| Product Code | D | d0 | k1 | h | dc | dk | k |
| Nominal | +0.08 | Max | Min | Max | ±0.25 | ±0.25 | |
| B2022-030077 | M3 | 4.22 | 0.77 | 0.8 | 4.2 | 6.35 | 1.5 |
| B2022-030097 | 0.97 | 1 | |||||
| B2022-030138 | 1.38 | 1.4 | |||||
| B2022-040077 | M4 | 5.41 | 0.77 | 0.8 | 5.38 | 7.87 | 2 |
| B2022-040097 | 0.97 | 1 | |||||
| B2022-040097 | 1.38 | 1.4 | |||||
| B2022-050077 | M5 | 6.35 | 0.77 | 0.8 | 6.33 | 8.64 | 2 |
| B2022-050097 | 0.97 | 1 | |||||
| B2022-050138 | 1.38 | 1.4 | |||||
| B2022-060089 | M6 | 8.75 | 0.89 | 0.92 | 8.73 | 11.18 | 4.08 |
| B2022-060115 | 1.15 | 1.2 | |||||
| B2022-060138 | 1.38 | 1.4 | |||||
| B2022-060221 | 2.21 | 2.29 | |||||
| B2022-080138 | M8 | 10.5 | 1.38 | 1.4 | 10.47 | 12.7 | 5.47 |
| B2022-080221 | 2.21 | 2.29 | |||||
| B2022-100221 | M10 | 14 | 2.21 | 2.29 | 13.97 | 17.35 | 7.48 |
| ThreadD/mm | Installation plate thicknessh/mm | Riveting force（kN） | Push force（N） | Rotational torque（N.M） |
| Nominal | Min | recommend | Min | Min |
| M3 | 0.8 | 11.2～15.6 | 470 | 1.47 |
| 1 | 550 | 1.7 | ||
| 1.4 | 1010 | 2.03 | ||
| M4 | 0.8 | 18～27 | 490 | 2.95 |
| 1 | 645 | 4 | ||
| 1.4 | 1250 | 5.1 | ||
| M5 | 0.8 | 18～38 | 530 | 3.6 |
| 1 | 800 | 4.5 | ||
| 1.4 | 1420 | 6.8 | ||
| M6 | 0.92 | 27～36 | 900 | 10 |
| 1.2 | 1380 | 13 | ||
| 1.4 | 1760 | 17 | ||
| 2.29 | ||||
| M8 | 1.4 | 27～36 | 1870 | 18.7 |
| 2.29 | 20.3 | |||
| M10 | 2.29 | 32～50 | 2020 | 36.2 |
| 3.18 |
The installation sheet metal material is cold-rolled steel plate, and the hardness should not exceed 150HB.
| Material Category | Material grade | Material grade | Surface treatment and protection level
(Neutral salt spray test conditions） |
| Medium Carbon Steel | SWCH35K
（10级） |
JIS G3507-1 | 1）Galvanized: 72H no white rust
2）Zinc-nickel alloy: 720H no red rust |
The product riveting tooling is shown in Figure 2. Riveting uses special hydraulic equipment with pressure and stroke monitoring.
Before riveting, confirm whether the specifications and dimensions of the punch and base match the product. Set the matching speed, pressure, and stroke stop point, place the product in the cavity or boss of the base, align the mounting plate hole with the center of the base, insert it into the product riveting port cylinder, and start the equipment to apply vertical pressure to embed the product into the mounting plate hole.
Reviews
There are no reviews yet.