Sems screw in Hex Phillips machine screw,
with flat and spring washers
DETAIL DIMENSIONS HEX HEAD SEMS SCREW ：
| M4 | M5 | M6 | M8 | ||
| d | Thread Dia | 3.838-3.978 | 4.826-4.976 | 5.82-5.97 | 7.79-7.96 |
| P | Pitch | 0.7 | 0.8 | 1 | 1.25 |
| s | Width across Flats | 6.64-7.0 | 7.64-8.0 | 9.64-10.0 | 12.57-13.0 |
| e | Width across Corners | 7.5min | 8.63min | 10.89min | 14.2min |
| k | Head Height | 2.6-3.0 | 3.26-3.74 | 3.76-4.24 | 5.06-5.54 |
| RECESS | PH | PH2 | PH2 | PH3 | PH3 |
| OD1 | Flat Washer Dia | 8.64-9.0 | 9.64-10.0 | 11.57-12.0 | 15.57-16 |
| h1 | Flat Washer Thickness | 0.75-0.85 | 0.94-1.06 | 1.52-1.68 | 1.52-1.68 |
| OD2 | Spring Washer Dia | 6.78max | 8.75max | 10.71max | 13.64max |
| h2 | Spring WasherThickness | 2.2-2.75 | 2.6-3.25 | 3.2-4.0 | 1.9-2.1 |
MATERIAL: 1008/08AL for 4.8 grade + blue trivalent zinc plating (salt spray life 48hrs no red rust)
MATERIAL: 10B21/1022 for 8.8 grade + blue trivalent zinc plating (salt spray life 48hrs no red rust)
MATERIAL: A2 – 304 for stainless steel + passivated
Metric or Inch: Metric
Finish: Plain
RoHS Compliant
Sems screw is a common type of screws used for metal material. More information about screws used for metal material please check:
FASTENER FOR METAL – (shscrewtool.com)
Shanghai Screwtool is a long-standing OEM supplier who has served US and Europe fastener industry for over 20 years. If you have regular demands for screws or fasteners, we recommend that you can contact us directly (info@shscrewtool.com) for economic offer and complete service.
