Spine elastiche a spirale esecuzione normale
BN 874
ISO 8750
DIN 7343
~UNI 6875
- High radial elasticity 
- Large bore tolerances permissible 
- No interlinking because of closed sleeve design 
- Ideal for automatic assembling (two-sided cones) 
| Material | 
            Material
            Steel
 | 
| Material execution | 
            Material execution
            hardened
 | 
| Surface | 
            Surface
            black
 | 
| Hardness | 
            Hardness
            420-545 HV
 | 
All features
All prices are based on the minimum order quantity. If you have any questions or special requirement, please contact Bossard.
Standard
Product features
- High radial elasticity 
- Large bore tolerances permissible 
- No interlinking because of closed sleeve design 
- Ideal for automatic assembling (two-sided cones) 
Features
| Material | 
            Material
            Steel
 | 
| Material execution | 
            Material execution
            hardened
 | 
| Surface | 
            Surface
            black
 | 
| Hardness | 
            Hardness
            420-545 HV
 | 
Functional principle
1. Radial elasticity shown schematically
2. Pin before insertion
3. Pin after insertion
4. Pin removed with coils rebounded
5. Cardan joint for socket wrench
6. Spiral spring pin
Illustration functional principle
Assembly notice
Mounting hole = nominal diameter: ≤ Ø 1,2 Tol. H10 / > Ø 1,2 Tol. H12