Topsert Solid M18-1.5 Stainless Steel
Topsert Solid M18-1.5 stainless steel solid key-locking insert without internal thread, for repairing misaligned holes and plugging holes, length 18.0 mm.
| External Thread | M18-1.5 |
|---|---|
| Material | Stainless steel |
| Length | 18.0 mm |
| Application | Misaligned-hole repair / hole plugging |
Overview
A Topsert solid insert is a threaded bushing with an external thread but no through bore, used to plug a hole or to rebuild a thread in a location where the original hole has been misdrilled or worn oversized. Because the body is solid, it can be installed, drilled and tapped to a new thread on site, which makes it a repair part rather than a pre-planned design element. This listing: external thread M18-1.5, length 18.0 mm, material Stainless steel, application Misaligned-hole repair / hole plugging.
Advantages
The insert can be drilled and tapped after installation, so the final thread size and position are set on the machine rather than dictated by the insert's own bore.
Key locking prevents the insert from rotating during the secondary drilling and tapping operation, which is the point where a friction-fit plug would spin.
The solid body allows the repair to be completed without welding or inserting a sleeve, so a casting with one damaged hole does not become scrap.
External thread engagement over the full insert length carries the load into sound parent material around the damaged zone rather than relying on the weakened original thread.
Applications
Misdrilled holes in castings, repair of oversized or stripped threads where no larger screw is acceptable, plugging obsolete ports in hydraulic and pneumatic blocks, and salvage of machined parts where a single hole is out of position.
The insert length must be short enough to leave parent material at the bottom of the hole for the external thread to bite, especially in blind holes. Confirm the final thread can be cut without breaking through into a cavity.
Product information is supplied by Toprecision. Custom parts can be produced to drawing — contact us for samples or a quotation.
Specifications across this series
46 parts in this series
Values are taken from each part’s own attribute set. Changing length, material or finish changes pull-out strength and installation torque, so compare the row that matches your drawing.
Selection and test data: engagement length, standards, salt-spray hours
FAQ
What are the key dimensions of this part?
External Thread M18-1.5, Material Stainless steel, Length 18.0 mm, Application Misaligned-hole repair / hole plugging.
What material and finish is it supplied in?
Stainless steel.
What should I verify before ordering or installing it?
The insert length must be short enough to leave parent material at the bottom of the hole for the external thread to bite, especially in blind holes. Confirm the final thread can be cut without breaking through into a cavity.