Dimensional and assembly data for M5 Captive Panel Screws, Spring-Loaded to Trade series (panel fastener). Includes head size and width across flats, clearance-hole and tapping-drill diameters, tightening torque per property class, and the sizes to step up or down to when the joint requires it.
M5 Dimensional Row (Trade series (panel fastener))
| Thread size | Pitch (mm) | Head diameter dk (mm) | Head height k (mm) | Panel hole (mm) | Panel thickness (mm) | Retracted travel (mm) | Drive |
|---|---|---|---|---|---|---|---|
| M5 | 0.8 | 12.0 | 4.0 | 6.4 | 1.5~3.0 | 8.0 | PH2 / TX20 |
Spanner & Drive for M5 Captive Panel Screws, Spring-Loaded
Drive geometry for M5 Captive Panel Screws, Spring-Loaded is given by the row above; match the tool to the listed values.
Hole Sizes for M5
| Coarse-thread pitch (ISO 724) | 0.8 mm |
|---|---|
| Through-hole / clearance (ISO 273 medium) | 5.5 mm |
| Tapping drill, coarse thread | 4.2 mm |
Tightening Torque for M5
| Class 8.8 (dry, ~µ 0.125) | ≈ 5.9 Nm |
|---|---|
| Class 10.9 (dry, ~µ 0.125) | ≈ 8.7 Nm |
| Class 12.9 (dry, ~µ 0.125) | ≈ 10 Nm |
Indicative dry-joint values. Lubrication can lower the required torque by 15–25%. Always confirm against the joint design, especially when going up a strength class.
Proof Load & Strength for M5
| Tensile stress area As (ISO 724) | 14.2 mm² |
|---|---|
| Proof load, class 8.8 | 8.2 kN |
| Proof load, class 10.9 | 12 kN |
| Proof load, class 12.9 | 14 kN |
| Min. ultimate tensile load, class 8.8 | 11 kN |
Proof load = tensile stress area × the proof stress Sp of the class, per ISO 898-1 — Sp is a lower figure than the yield stress Rp0.2 and the two are not interchangeable. The stress area is computed from this size's own diameter and pitch, so a fine-pitch designation gives the fine-pitch figure. Design the joint so the working preload stays below the proof load of the class selected.
Installation Tips for M5 Captive Panel Screws, Spring-Loaded
- At M5 the joint is sensitive to over-torque — use a torque-limiting driver and check the head doesn't bury into a softer counterpart.
When to Step Up or Down from M5
When the joint preload approaches the proof load of M5 class 8.8, step up to M6 class 8.8 (or move to M5 class 10.9). When the joint is over-specified, M4 often saves weight and cost without losing the safety margin.
Custom manufacturing · Made to drawing
Need captive panel screws, spring-loaded in a size this table does not list?
This page covers M5 captive panel screws, spring-loaded. 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 warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
