Iscar 7005384 Cap Screw T20 Torx M4.5 Indexable

Product Description

The ISCAR 7005384 is a countersunk-head cap screw designed to secure indexable inserts in compatible toolholders. It uses a T20 Torx drive and an M4.5 thread, providing consistent clamping force against the insert seat without distorting the cutting geometry. This type of fastener is a consumable component in indexable tooling systems — it wears or strips over time and requires periodic replacement to maintain accurate insert seating. The screw measures approximately 3.35 inches in length and 1.97 inches in width, and weighs 0.033 pounds. Machinists and toolroom technicians working with DR-MF series multifunction toolholders will use this screw as a direct OEM-style replacement.

This cap screw is intended for use in turning applications with Multifunction Tools series toolholders, specifically DR-MF style holders. It is compatible with the XCMT 170508-MF insert, which has an inscribed circle of 0.685 inches. It is sold individually per package, with a minimum order quantity of 10 units, making it suitable for stocking at a shop level where multiple holders of this type are in service. Typical users include CNC machinists, toolroom personnel, and cutting tool specialists managing indexable tooling inventories.

Key Features

• T20 Torx drive for precise torque application and reduced cam-out risk during tightening
• M4.5 thread size matches OEM DR-MF toolholder insert pocket specifications
• Countersunk head profile seats flush against the insert, maintaining correct cutting geometry
• Compatible with XCMT 170508-MF insert (inscribed circle: 0.685 inches)
• Lightweight at 0.033 pounds — suitable for bulk stocking without significant inventory weight
• SR style designation per ISCAR Multifunction Tools series classification

Compatibility

Compatible with DR-MF series toolholders and the XCMT 170508-MF indexable insert as specified by ISCAR for Multifunction Tools series turning applications.

Installation Notes

This fastener should be installed by a qualified machinist or toolroom technician using a calibrated T20 Torx driver or torque wrench with the correct bit. Always power down and lock out the machine before servicing any indexable toolholder. Do not reuse a screw that shows thread damage, head deformation, or rounding of the Torx socket, as compromised fasteners can allow insert movement during cutting. Follow the toolholder manufacturer torque specification documented in the holder documentation — do not estimate or apply arbitrary torque values.