When you need Hex Slotted Castle Nut (Type 2) — GB/T 6180 / ISO 7036 (Series 050) in the M8 size, the controlling values come from GB/T 6180 / ISO 7036. This page lists them in one place — pitch, head geometry, tool size and the matching hole.
M8 Dimensional Row (GB/T 6180 / ISO 7036)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e (mm) | Total height m (mm) | Slot width (mm) | Reference standard |
|---|---|---|---|---|---|---|
| M8 | 1.25 | 13.0 | 14.38 | 9.8 | 2.5 | ISO 7036 / GB/T 6180 |
Spanner & Drive for M8 Hex Slotted Castle Nut (Type 2) — GB/T 6180 / ISO 7036 (Series 050)
Drive geometry for M8 Hex Slotted Castle Nut (Type 2) — GB/T 6180 / ISO 7036 (Series 050) is given by the row above; match the tool to the listed values.
Common Applications for M8 Hex Slotted Castle Nut (Type 2) — GB/T 6180 / ISO 7036 (Series 050)
M8 Hex Slotted Castle Nut (Type 2) — GB/T 6180 / ISO 7036 (Series 050) are commonly specified for general-purpose joints in machinery, fixturing and equipment frames.
Mating Parts for M8
Pair M8 with the matching M8 bolt or screw, plus a M8 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M8
When the joint preload approaches the proof load of M8 class 8.8, step up to M10 class 8.8 (or move to M8 class 10.9). When the joint is over-specified, M6 often saves weight and cost without losing the safety margin.