Property Class 12.9 Steel M.2 SSD Mounting Screws are supplied to ISO 898-1 property class 12.9. Corrosion behaviour is requires plating or black-oxide protection, the material is magnetic, and the usable service range is commonly limited to approx. +300 °C; confirm against the coating and the load. In practice this grade is the highest common strength class, for high-load machine assembly.
- Grade
- ISO 898-1 property class 12.9
- Corrosion resistance
- Requires plating or black-oxide protection
- Magnetic response
- Magnetic
- Service temperature
- commonly limited to approx. +300 °C; confirm against the coating and the load
Property values are typical for the grade. Certified mechanical test data is available on request for production orders.
Property Class 12.9 Steel (ISO 898-1 property class 12.9) is the highest common strength class, for high-load machine assembly. Specified on m.2 ssd mounting screws it determines the corrosion behaviour (requires plating or black-oxide protection) and the service temperature range (commonly limited to approx. +300 °C; confirm against the coating and the load); the dimensions are ours rather than a standard's, and are listed in full below.
Why Choose Property Class 12.9 Steel for M.2 SSD Mounting Screws
The highest common strength class, for high-load machine assembly. For m.2 ssd mounting screws, this matters when requires plating or black-oxide protection is the primary requirement.
Mechanical & Physical Properties
| Grade designation | ISO 898-1 property class 12.9 |
|---|
| Magnetic response | Magnetic |
|---|
| Service temperature | commonly limited to approx. +300 °C; confirm against the coating and the load |
|---|
| Corrosion characteristic | Requires plating or black-oxide protection |
|---|
Corrosion Behavior in Service
Carbon and alloy steel m.2 ssd mounting screws require a coating for corrosion protection. Zinc plating (with or without passivation) is the most common; hot-dip galvanizing is used for outdoor structural service; black-oxide is mainly a tarnish-prevention finish for tool-room use.
Galvanic & Galling Considerations
For m.2 ssd mounting screws in steel, the dominant compatibility issue is hydrogen embrittlement at high property classes (10.9 and above) when electroplated. Plating must be followed by an appropriate baking treatment, or a non-electroplated finish (mechanical zinc, zinc flake) should be substituted.
Sizes of M.2 SSD Mounting Screws Available in Property Class 12.9 Steel
| System option | Thread size | Total length (mm) | Thread length (mm) | Head diameter (mm) | Drive | Selection note |
|---|
| common 2230 / 2280 retention | M2 | 3 | | | varies | check the system standoff |
| platform-specific | M2 | 2 / 3.5 | | | varies | check the bracket and shield design |
| generic example | M3 | 3 | 2 | 4 | Phillips | not universal; verify the motherboard |
Dimensions are independent of the material: every size above is available in Property Class 12.9 Steel.
Custom manufacturing · Made to drawing
Need this screw in a grade that is not listed?
Grade 12 9 Steel is one of the grades the catalog describes. Material and finish are usually what drives a special — a grade the standard part is not stocked in, or a coating chosen against a salt-spray figure instead of a default. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
Custom screw manufacturingSend a drawing
Applications & Industries
The sectors that buy M.2 SSD Mounting Screws, and the duty each one buys them for. Stocked from common 2230 / 2280 retention to generic example (size designation).
Industries that specify M.2 SSD Mounting Screws
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Desktop PC assembly
System-specific screws secure M.2 drives and heatsink shields.
-
Motherboard service
M2×3, M2×3.5 and M2×2 examples cover different standoff layouts.
-
IT refurbishment
The board manual controls the screw and torque selection.
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Laptop repair
M2 screws retain 2230 and 2280 storage modules at the board standoff.
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Energy & infrastructure
Tower, pipework, switchgear and plant fixings specified for long service life and inspectable joints.
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Maintenance & MRO
Stocked replacements matched to an existing property class, thread and finish.
Typical applications
- checking the motherboard service manual before ordering
- matching the screw to the standoff and shield thickness
- using the generic M3 example only when the system specifies it
- retaining an M.2 drive at its board standoff
- bolting brackets, motors and gearboxes to a frame
- assemblies that are dismantled for service and re-torqued
Service conditions to specify against
- Marine and coastal
- Available in A4 (316) stainless for chloride exposure — coastal structures, pool halls, water treatment and deck hardware, where A2 will eventually pit.
- High load
- Supplied in ISO 898-1 property classes, so the joint can be designed to a stated proof load and tightened to a calculated torque rather than by feel.
- Torque and preload
- The joint is designed around bolt tension, so lubrication, coating and the friction coefficient all change the torque figure — state them together.
Where to use something else
- Do not assume every M.2 board uses the same screw; the standoff and system manufacturer control the actual size.
- Do not use a machine thread into unthreaded sheet or timber; use a tapping screw, rivet nut or insert made for that parent material.
Full application guide: where M.2 SSD Mounting Screws are used, how to specify them, and the cases they are wrong for
