Hobson data sheet
Trilobular Thread Rolling Screw, Torx Drive: Data Sheet
Hobson's one-page data sheet for trilobular thread rolling screws for metal, part MTMSZPOM: Torx drive machine screws that roll their own thread into a pre-drilled hole. It lists the sizes, Torx bit sizes and recommended hole sizes in steel and aluminium.
What this covers
- Applications
- Features
- Sizes and Torx drive
- Recommended hole sizes
For Machine Screw.
Key things to remember
The essentials from this document in plain words. Check the full document before you rely on a figure.
- The three-lobed thread forms its own thread with less friction, gives deep thread engagement and resists loosening from vibration.
- Rolling the thread does away with tapping, washers and nuts and thread locking compounds.
- Sizes M3 to M6, lengths 6mm to 30mm. Torx sizes: M3 T10, M4 T20, M5 T25, M6 T30.
- Recommended hole size in steel: M3 2.75mm, M4 3.65mm to 3.7mm, M5 4.6mm to 4.65mm, M6 5.5mm to 5.55mm. In aluminium: M3 2.75mm, M4 3.7mm, M5 4.65mm, M6 5.65mm.
- Mild steel, zinc plated (RoHS compliant). Used in metal framing, automotive work and punched or cast parts.
Who it helps: Fabricators and assemblers fixing into punched, drilled or cast metal parts.
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This document is published by Hobson Engineering, who supply this range to us. We show it here in full so you can read it next to the product; the summary above is ours. Read it on this page or download the PDF. For the most current version, ask us.