Metric 20B SK1 Attachment Connecting Link
Carbon Steel Chains
| Features | Premium/Premier | General Duty Plus | Economy Plus |
|---|---|---|---|
| Solid Bushings | Split Bushings in most cases | Split Bushings | |
| Solid Rollers | |||
| Through-Hardened Pins | Case-Hardened Pins | Heat-Treated Pins | |
| Case-Hardened Rollers | Heat-Treated in Some Chains | ||
| Case-Hardened Bushings | Heat-Treated in Some Chains | ||
| Wide Contour Plates | Standard Contour Plates | Standard Contour Plates | |
| Superior Pin to Plate Contact | |||
| High-Hold Riveting | Standard Dual-Stake Rivets | Standard Dual-Stake Rivets | |
| Factory Pre-Loading | Not Standard on Economy Chains | ||
| Specific Heat-Treatment on Every Component | Some Components Might be Heat-Treated | ||
| Premium Alloy & Carbon Materials | High-Quality Carbon Materials | Standard-Quality Carbon Materials | |
| Shot-Peened Components | Non Shot-Peened Components | Non Shot-Peened Components | |
| High-Precision Components | Standard Precision Components | Low Precision Components | |
| Conforms to ANSI B29.1 or ISO/DIN Standards |
20B SK1 Attachment Dimensions

- Part #: 20B SK1
- Configuration: Straight One Hole on Both Sides
- Pitch (P): 31.75mm
- Inner Width (B1): 19.56mm
- Roller Link Width (B2): 29.00mm
- Roller Diameter (D1): 19.05mm
- Plate Height (G): 26.4mm
- Attachment Width (M): 35.0mm
- Attachment Hole I.D. (DL): 9.00mm
- Dimension (F): 30.5mm
- Dimension (H): 45.7mm
- Plate Thickness (S): 3.50mm

- Part #: 20B SK1
- Configuration: Straight One Hole on Both Sides
- Pitch (P): 31.75mm
- Inner Width (B1): 19.56mm
- Roller Link Width (B2): 29.00mm
- Roller Diameter (D1): 19.05mm
- Plate Height (G): 26.4mm
- Attachment Width (M): 35.0mm
- Attachment Hole I.D. (DL): 9.00mm
- Dimension (F): 30.5mm
- Dimension (H): 45.7mm
- Plate Thickness (S): 3.50mm