T Slot Size Standard
M-LOK, standing for Modular Lock, is a free licensed firearm rail interface system developed and patented by Magpul Industries. M-LOK allows for direct accessory attachment onto the 'negative space' (hollow slot) mounting points, and is a competing standard to VLTOR's open sourced KeyMod system for replacing the ubiquitous Picatinny rail in some applications.
ISO 299:1987This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
- Standard metric T-slots and T-nuts Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! - search is the most efficient way to navigate the Engineering ToolBox!
- Bolt Size (d) T-Slot Size (a) L: Part. E: k: b: a1: Bolt Size (d) T-Slot Size (a) L: Part. E: k: b: a1: M06: 6: 25: 787-0606-025: 10: 4: 15: 5,7: M18: 20.
- Standard hole sizes for bolts are made 1/16-in. Larger in diameter than the nominal size of the fastener body. This provides a certain amount of play in the holes, which compensates for small misalignment’s in hole location or assembly, and aids in the shop and field entry of fasteners.
Abstract Preview
This second edition cancels and replaces the first edition (ISO 299 : 1973), of which the dimensions in inches have been deleted and to which clause 5 has been added. Specifies, in millimetres, the dimensions and spacing of T-slots. It also specifies the metric dimensions of bolts to be used in these slots.
T Slot Standard Size
General information
- Publication date : 1987-04
- Number of pages : 3
- :
- ICS :
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ISO 299:1987
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Standard metric T-slots and T-nuts
Standard Metric T-Slots
| Size | s1 (mm) | t1 (mm) | a1 (mm) | h1 (mm) |
|---|---|---|---|---|
| M4 | 5 | 10 - 11 | 3.5 - 4.5 | 8 - 10 |
| M5 | 6 | 11 - 12.5 | 5 - 6 | 11 - 13 |
| M6 | 8 | 14.5 - 16 | 7 - 8 | 15 - 18 |
| M8 | 10 | 16 - 18 | 7 - 8 | 17 - 21 |
| M10 | 12 | 19 - 21 | 8 -9 | 20 - 25 |
| M12 | 14 | 23 - 25 | 9 - 11 | 23 - 28 |
| M16 | 18 | 30 - 32 | 12 - 14 | 30 - 36 |
- 1 inch = 25.4 mm
Standard Metric T-Nuts
| Size | s2 (mm) | t2 (mm) | a2 (mm) | h2 (mm) |
|---|---|---|---|---|
| M4 | 5 | 9 | 2.5 | 6 |
| M5 | 6 | 10 | 4 | 8 |
| M6 | 8 | 13 | 6 | 10 |
| M8 | 10 | 15 | 6 | 12 |
| M10 | 12 | 18 | 7 | 16 |
| M12 | 14 | 22 | 8 | 19 |
| M16 | 18 | 28 | 10 | 25 |
Related Topics
- Fasteners - Bolts, nuts and threaded rods - torque, tension and loads
Related Documents
Steel T Slot Channel
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