Din 911 Pdf _top_ Jun 2026

| Nominal size (s) mm | Tolerance (h) | Short arm l1 (mm) | Long arm l2 (mm) | |---------------------|---------------|-------------------|-------------------| | 1.5 | -0.04 | 14 | 60 | | 2.0 | -0.04 | 16 | 70 | | 3.0 | -0.05 | 20 | 80 | | 5.0 | -0.05 | 25 | 100 | | 6.0 | -0.05 | 28 | 112 | | 8.0 | -0.06 | 36 | 125 | | 10.0 | -0.06 | 40 | 140 |

When you receive a shipment of hex keys from a supplier, you need to inspect them. Do they meet the claimed standard? Using the official PDF, you can set up a go/no-go gauge to verify the "width across flats" (s) and the "corner fill radius" (k). A key that is too small will strip screws; a key that is too large will not fit. din 911 pdf

: Hardness levels vary by size to ensure durability without becoming brittle: Size ≤ 6 mm : Minimum 52 HRC. Size 7–8 mm : Minimum 50 HRC. Size 10–14 mm : Minimum 48 HRC. Size ≥ 17 mm : Minimum 45 HRC. | Nominal size (s) mm | Tolerance (h)