M16 x 2.0 A2-70 (Metric thread)
The M16 x 2.0 A2-70 is a ISO metric threaded fastener with a 2 mm thread pitch. It develops a maximum recommended assembly torque of 160 Nm dry, a single-shear capacity of 66 kN, and a minimum tensile strength of 700 MPa. It is manufactured from austenitic A2 / 18-8 stainless steel with good corrosion resistance and non-magnetic behaviour.
Fastener Specifications
| Specification | Value |
|---|---|
| Thread System | Metric |
| Designation | M16 x 2.0 |
| Thread Pitch | 2 mm |
| Property Class / Grade | A2-70 |
| Material | Stainless 304 |
| Tensile Strength | 700 MPa |
| Max Assembly Torque | 160 Nm |
| Shear Strength (single) | 66 kN |
Thread & Grade Notes
M16 x 2.0 is a Metric thread. A2-70 fasteners are a medium-strength grade with a minimum tensile strength of 700 MPa. Thread pitch of 2 mm determines how many turns are required to engage a given length and how resistant the joint is to loosening through vibration.
- Preload: torque to roughly 65–70% of proof load (≈ 160 Nm dry).
- Shear joints: a single bolt in shear carries about 66 kN before failure; use multiple fasteners or larger sizes for higher loads.
- Corrosion: matching fastener and structure materials avoids galvanic corrosion, especially with stainless in chloride environments.
Tightening & Substitution Notes
Always torque to the value specified by the joint engineer; the 160 Nm figure here is a generic dry assembly target. When substituting, match the thread system (Metric), pitch (2 mm), grade (A2-70), and at minimum the shear capacity (66 kN). A lower-grade fastener in the same size reduces both preload and shear capacity; stainless grades trade some strength for corrosion resistance and are prone to galling.
Frequently Asked Questions
What is the thread pitch of the M16 x 2.0?
2 mm.
How much torque does an M16 x 2.0 A2-70 bolt take?
Approximately 160 Nm dry assembly torque.
What is the shear strength of the M16 x 2.0 A2-70?
About 66 kN in single shear.
What is the tensile strength of the M16 x 2.0 A2-70?
700 MPa minimum.
What material is the M16 x 2.0 A2-70?
Stainless 304.