This oil sight glass is made of durable aluminum and provides an accurate reading of your oil level. Designed for easy installation, it allows you to check your oil levels with ease. Keep your machinery running smoothly and prevent potential damage with this essential tool.
| Metric standard | M (thread outer diameter) * screw thread OD: M10*1:thread outer diameter 9.7mm, screw thread distance 1mm | ||||||||
| Specification | M10*1 | M12*1.25 | M12*1.5 | M14*1.5 | M16*1.5 | M18*1.5 | M20*1.5 | M22*1.5 | |
| Screw thread OD (mm) | 9.7 | 11.7 | 11.7 | 13.7 | 15.8 | 17.8 | 19.8 | 21.8 | |
| Opposite side OD (mm) | 13 | 17 | 17 | 17 | 19 | 21 | 23.77 | 26.21 | |
| Specification | M24*1.5 | M26*1.5 | M27.1.5 | M27*2 | M33*1.5 | M33*2 | M36*1.5 | M36*2 | |
| Screw thread OD (mm) | 23.8 | 25.8 | 26.8 | 26.8 | 32.8 | 32.8 | 35.8 | 35.8 | |
| Opposite side OD (mm) | 28.46 | 31.7 | 31.9 | 31.9 | 34.9 | 34.9 | 36 | 36 | |
| Specification | M39*1.5 | M40*1.5 | M42*1.5 | M42*2 | M48*1.5 | M48*2 | M60*2 | ||
| Screw thread OD (mm) | 38.8 | 39.8 | 41.8 | 41.8 | 47.8 | 47.8 | 59.8 | ||
| Opposite side OD (mm) | 36 | 36 | 46 | 46 | 48 | 48 | 62 | ||
| British standard | |||||||||
| Specification | G1/4'' | G3/8'' | G1/2'' | G3/4'' | G1'' | G1 1/4'' | G1 1/2'' | G2'' | |
| Norminal | DN8 | DN10 | DN15 | DN20 | DN25 | DN32 | DN40 | DN50 | |
| Screw thread OD (mm) | 12.8 | 16.6 | 20.6 | 26 | 32.9 | 41.5 | 47.5 | 59.15 | |
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