Stop Collars

HMS Engineers manufactures a wide range of Stop Collars designed to provide secure positioning of centralizers and other downhole tools on casing strings. Engineered for strength, durability, and ease of installation, our stop collars ensure reliable performance even in wells with tight annular clearances.

Key Features

Hinged Spiral Nail Type – equipped with internal grooves and specially designed spiral nails that fasten firmly onto the casing pipe. Highly effective in applications with low annular clearance.

Material Strength – fabricated from ductile iron, offering excellent impact resistance and fatigue capability.

Slip-On Set Screw Type – one-piece, high-strength, corrosion-resistant alloy collar. Gripping force applied by a single row of set screws for firm casing attachment.

Secure Grip – rows of set screws provide strong holding force, ensuring collars remain firmly in place during operations.

Corrosion Resistance – designed for long service life in harsh downhole environment

Product Range

• Hinged Spiral Nail Stop Collar
• Hinged Bolted Stop Collar
• Hinged Set Screw Stop Collar
• Slip-On Set Screw Stop Collar
• Slip-On Set Screw Stop Collar (Single Side Bevelled)

Applications

• Positioning centralizers and casing accessories
• Ensuring proper casing standoff during cementing operations
• Suitable for vertical, deviated, and horizontal wells