


Sandvik / Tamrock
550 579 20 Hexagon socket countersunk head screw (full thread
RANGER 780 RP
| Part Number | 550 579 20 |
| Description | Hexagon socket countersunk head screw (full thread |
| Brand | Sandvik (Tamrock) |
| Assembly | Seat assembly |
| Type | Drill Rig Spare Part |
Quick answer
550 579 20 (also written 55057920, 550-579-20, or 550.579.20) is a Sandvik hexagon socket countersunk head screw (full thread spare part used in the Seat assembly assembly of the Sandvik DX700. Verified compatible with 14 Sandvik machine models including DD422i, DD422i-60C, DL421-15C. 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: 55057920, 550 579 20, 550-579-20.
Compatible machines
14
OEM cross-reference
550 579 20
About Sandvik 550 579 20 Hexagon socket countersunk head screw (full thread
Designed for the demanding environment of the Sandvik DX700, this fastening component secures critical elements within the Seat assembly. 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 DX700 (DX700). 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.









