


Sandvik / Tamrock
856 177 59 HEX.BOLT
DT821
| Part Number | 856 177 59 |
| Description | HEX.BOLT |
| Brand | Sandvik (Tamrock) |
| Assembly | Rod Retainer |
| Type | Drill Rig Spare Part |
Quick answer
856 177 59 (also written 85617759, 856-177-59, or 856.177.59) is a Sandvik hex.bolt spare part used in the Rod Retainer assembly of the Sandvik DT821. Verified compatible with 3 Sandvik machine models including DT821, DT821-SC, DT921i. Available as an aftermarket replacement drill part from BK Drilling — Turkey-based Sandvik and Epiroc spare parts supplier serving mining contractors worldwide. Quote on request via WhatsApp; typical lead time 3-7 days for stock items.
Part code alternate forms: 85617759, 856 177 59, 856-177-59.
Compatible machines
3
OEM cross-reference
856 177 59
About Sandvik 856 177 59 HEX.BOLT
Designed for the demanding environment of the Sandvik DT821, this fastening component secures critical elements within the Rod Retainer. Mining equipment fasteners are subject to strict torque specifications and material requirements to maintain structural safety during operation.
This is an OEM-compatible aftermarket replacement part for the Sandvik DT821 (DT821). Also compatible with Tamrock branded equipment of the same model series. BK Drilling supplies this part with fast worldwide shipping and competitive pricing.
Frequently asked questions
Why use OEM-compatible parts for Sandvik drilling equipment?
OEM-compatible parts are manufactured to the same dimensional tolerances and material specifications as original components, ensuring proper fit, reliable performance, and maintaining the designed safety margins of the drilling machine.

