550 770 77 SCREW

DS410

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Part Number	550 770 77
Description	SCREW
Brand	Sandvik (Tamrock)
Assembly	VALVE ASSEMBLY
Type	Drill Rig Spare Part

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Compatibility

Machine Models

AXERA 8-290 DD321-40 DD321-40C DD421-60 DD421-60C DL421-15C DL421-7C DL430-7 DL431-7C DS410 DS410-C DS411 DS411-C DS420 DS421 DS421-C DS510-C DT621 DT721 DT820 DT820-SC DT821 DT821-C DT821-SC DT921i DX700

550 770 77 (also written 55077077, 550-770-77, or 550.770.77) is a Sandvik screw spare part used in the VALVE ASSEMBLY assembly of the Sandvik DX700. Verified compatible with 26 Sandvik machine models including AXERA 8-290, DD321-40, DD321-40C. 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.

Compatible machines

OEM cross-reference

550 770 77

About Sandvik 550 770 77 SCREW

This fastener is used in the VALVE ASSEMBLY of the Sandvik DX700. High-strength fasteners in drilling equipment must withstand extreme vibration, cyclic loading, and environmental exposure. Using OEM-specification fasteners ensures proper clamping force and joint integrity in critical assemblies.

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.