Serrated T-Slot Bolts for Aluminum Profiles (GN 505.4) are specified where the joint requires a serrated T-slot bolt for aluminum profiles, whose serrations grip the slot and resist sliding. The sections below cover the typical end-uses by industry, the size and material decisions for each, assembly practice, and the applications this fastener type is not suited to. Stocked across roughly M5 to M8, they cover general to heavy-duty work.
Typical Applications for Serrated T-Slot Bolts for Aluminum Profiles
The most common settings where these are specified:
- Automation: profile frames and guards.
- Machine guarding: panel mounting on profiles.
- Workbenches: accessories on profile frames.
- Assembly lines: conveyor frames.
How to Specify Serrated T-Slot Bolts for Aluminum Profiles for Your Application
- Size: Match the nominal size to the mating thread or hole. This product spans M5–M8; check the full table below for the exact dimensions of each size.
- Strength class: Choose the property class (e.g. 8.8, 10.9, 12.9 or A2/A4 stainless) for the load and environment, and tighten to the matching torque so the joint relies on preload, not friction.
- Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- Standard: This product is supplied to GN 505.4. Quoting the standard on your order guarantees interchangeable dimensions between suppliers.
Installation & Assembly Practice
- Tighten to the torque for the size and property class with a calibrated wrench — the joint is held by preload, not by the thread friction alone.
- Ensure at least one full thread projects beyond the nut after tightening, and never re-use a bolt that has been tightened into yield.
- Under slotted or oversized holes, fit a hardened washer so the preload does not relax into the hole edge.
Common Selection Mistakes with Serrated T-Slot Bolts for Aluminum Profiles
- Specifying class 12.9 "to be safe" in a corrosive environment — high classes are more sensitive to hydrogen embrittlement and stress corrosion; 8.8 hot-dip galvanized often outlasts them outdoors.
- Choosing a length that puts the shear plane through the threaded portion when a plain shank (partially threaded bolt) was available.
- Mixing stainless bolts with plated-steel nuts: the joint loses its corrosion logic and can gall or seize.
Where Serrated T-Slot Bolts for Aluminum Profiles Are Not the Right Choice
Not for permanent joints that will never be opened (a rivet or weld is cheaper), and not where the head must sit flush — use a countersunk screw instead.
Custom manufacturing · Made to drawing
Need a serrated t-slot bolts for aluminum profiles outside the standard range?
Lengths and thread lengths outside the standard table are the commonest request, followed by a drive the standard does not offer and a head marked with your own part number. Made by cold heading or hot forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
