On the bench specifying M6 Equal-End Stud Bolt — GB/T 901 / DIN 939 (Series 093)? This page gives the controlling dimensions for the M6 size of Equal-End Stud Bolt — GB/T 901 / DIN 939 (Series 093) (to GB/T 901 / DIN 939).
M6 Dimensional Row (GB/T 901 / DIN 939)
| Thread size | Pitch (mm) | Length L (mm) | Engagement depth bm (mm) | Material | Reference standard |
|---|---|---|---|---|---|
| M6 | 1.0 | 50 | 8 | Cl. 8.8 alloy steel | DIN 939 / GB/T 901 |
Spanner & Drive for M6 Equal-End Stud Bolt — GB/T 901 / DIN 939 (Series 093)
Drive geometry for M6 Equal-End Stud Bolt — GB/T 901 / DIN 939 (Series 093) is given by the row above; match the tool to the listed values.
Hole Sizes for M6
| Coarse-thread pitch (ISO 724) | 1 mm |
|---|---|
| Through-hole / clearance (ISO 273 medium) | 6.6 mm |
| Tapping drill, coarse thread | 5 mm |
Tightening Torque for M6
| Class 8.8 (dry, ~µ 0.125) | ≈ 10 Nm |
|---|---|
| Class 10.9 (dry, ~µ 0.125) | ≈ 14 Nm |
| Class 12.9 (dry, ~µ 0.125) | ≈ 17 Nm |
Indicative dry-joint values. Lubrication can lower the required torque by 15–25%. Always confirm against the joint design, especially when going up a strength class.
Common Applications for M6 Equal-End Stud Bolt — GB/T 901 / DIN 939 (Series 093)
M6 Equal-End Stud Bolt — GB/T 901 / DIN 939 (Series 093) are commonly specified for general-purpose machinery, jigs, fixturing and light structural connections.
Mating Parts for M6
For M6, pair with a M6 hex nut (ISO 4032 / DIN 934) and, where used, a M6 flat washer (ISO 7089 / DIN 125A) under the head and under the nut.
When to Step Up or Down from M6
When the joint preload approaches the proof load of M6 class 8.8, step up to M8 class 8.8 (or move to M6 class 10.9). When the joint is over-specified, M5 often saves weight and cost without losing the safety margin.