M5 Screw & Bolt Dimensions (Head Height, Diameter, Drive)
M5 screw and bolt sizes are among the most widely used metric fasteners. Use this quick chart to find head height, head diameter, and drive size for common M5 types. If you’re new to standards, DIN and ISO numbers are the “exact names” that define a fastener’s official dimensions (e.g., DIN 912, ISO 7380). Standard coarse thread for M5 is M5-0.80.
Metric M5-0.80 (Coarse) – Dimensions & Drive Sizes
| Type | DIN | ISO | Head Height | Head Diameter | Drive Size |
|---|---|---|---|---|---|
| M5 Hex Bolts (PT) | 933 | 4017 | 3.65 mm | 8.79 mm* | 8 mm WAF |
| M5 Hex Bolts (FT) | 931 | 4014 | 3.65 mm | 8.79 mm* | 8 mm WAF |
| M5 Socket Head Cap | 912 | 4762 | 5.0 mm | 8.72 mm | 4 mm hex |
| M5 Low Head Socket Cap | 7984 | — | 3.5 mm | 8.5 mm | 3 mm hex |
| M5 Button Head Socket | 9427 | 7380 | 2.75 mm | 9.5 mm | 3 mm hex |
| M5 Flat Head Socket | 7991 | 10642 | 3.10 mm | 11.20 mm | 3 mm hex |
| M5 Phillips Flat Head | 965 | — | 2.5 mm | 9.2 mm | #2 Phillips |
| M5 Phillips Pan Head | 7985 | 7045 | 3.95 mm | 10.0 mm | #2 Phillips |
All of these pair with matching M5 nuts and M5 washers.
Legend: PT = Partial Thread, FT = Full Thread. * = Width Across Flats (hex).
- Metric Thread Pitch Table • US TPI (comparison)
- How to Measure Length & Diameter • Printable Ruler (to scale)
- Shop all M5 fasteners — fast shipping from Milton, Florida.
M5 FAQs
What hex key fits an M5 socket head cap screw?
Typically a 4 mm hex key. Low-head and button socket styles commonly use a 3 mm hex.
What nut fits an M5 screw?
M5 screws pair with M5 nuts and M5 washers. Metric fasteners always match by nominal diameter.
What is the standard M5 thread pitch?
Standard coarse pitch is M5-0.80. Fine-pitch versions exist but are less common—verify your tapped hole or nut.
Is an M5 the same as #10-32?
They’re similar in diameter (M5 ≈ 0.197"), but use different thread systems (metric pitch vs. US TPI). They are not interchangeable.