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| 
 British Standard Nickel Plated Roller Chains  | 
|||||||||
| 
 Chain  | 
 Pitch  | 
 Roller  | 
 Pin  | 
 Side Plates  | 
 Over-All   | 
 Transverse  | 
 Weight  | 
 Tensile   | 
|
| 
 Width  | 
 Diameter  | 
||||||||
| 
 P  | 
 b1  | 
 d1  | 
 d2  | 
 g  | 
 a1  | 
 e  | 
|||
| 
 mm  | 
 Kg/m  | 
 N  | 
|||||||
| 
 06B-1 NP*  | 
 9.53  | 
 5.72  | 
 6.35  | 
 3.26  | 
 8.26  | 
 16.78  | 
 –  | 
 0.45  | 
 8,940  | 
| 
 08B-1 NP  | 
 12.7  | 
 7.75  | 
 8.51  | 
 4.45  | 
 11.8  | 
 20.9  | 
 –  | 
 0.74  | 
 17,836  | 
| 
 10B-1 NP  | 
 15.85  | 
 9.65  | 
 10.16  | 
 5.08  | 
 14.7  | 
 23.7  | 
 –  | 
 0.95  | 
 22,240  | 
| 
 12B-1 NP  | 
 19.05  | 
 11.68  | 
 12.07  | 
 5.72  | 
 16.1  | 
 27.31  | 
 –  | 
 1.19  | 
 28,912  | 
| 
 12B-2 NP  | 
 19.05  | 
 11.68  | 
 12.07  | 
 5.72  | 
 16.1  | 
 46.31  | 
 19.46  | 
 2.34  | 
 57,868  | 
| 
 16B-1 NP  | 
 25.4  | 
 17.02  | 
 15.88  | 
 8.27  | 
 21.1  | 
 41.5  | 
 –  | 
 2.72  | 
 56,889  | 
* Bush chain