1.2mm PCB Internal/External Thread Super Screw

1.2 mm PCB super screw with internal and external threads, one part acting as both the spacer and the fixing point.

Key specifications

MaterialAlloy Structural Steel
Installationsingle driving step for board stacking
StandardGB/T 3098.1, GB/T 197
Typical substratemultilayer PCBs and industrial boards
Key inspectionsthread gauging, coaxiality, overall length

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Product overviewOverview

The part combines a standoff and a nut: the external thread anchors into the base board or a pre-installed nut, while the internal thread at the other end provides a fresh interface for the upper board. A male-female screw replaces a spacer plus a screw, which removes one part and one assembly step, but it also means the stack height is fixed by the part rather than adjusted at assembly. Alloy steel at class 12.9 gives the strength needed in a small section.

Material: Alloy Structural Steel. It is driven in one pass to clamp the board stack.

Key featuresFeatures

One part replaces spacer and screw, and fixes the stack height.
Internal and external threads machined in one setup, holding coaxiality to drawing.
One part replaces a stud and a screw, reducing operations and inventory lines.
Overall length made to the stack height, typically within ±0.05 mm.

Typical applicationsApplications

Multi-layer PCB stacking
Industrial motherboards and expansion boards
Power modules and heatsink mounting

Selection notesSelection

Fix the board-to-board distance before choosing the part; a male-female screw cannot be adjusted once the height is set.

Frequently asked questionsFAQ

What does a super screw replace?

A spacer and a separate screw. The male thread at one end and the female thread at the other let the part space the boards and fix them in one operation.

What matters during installation of the 1.2mm PCB Internal/External Thread Super Screw?

Drive it in one pass to clamp the board stack. One part replaces spacer and screw, and fixes the stack height.

Specifications

Material	Alloy Structural Steel
Property Class	Grade 12.9
Standard	GB/T 3098.1, GB/T 197
Installation	single driving step for board stacking
Typical substrate	multilayer PCBs and industrial boards
Key inspections	thread gauging, coaxiality, overall length

Manufacturing and inspection

Internal and external threads are gauged 100%; coaxiality is sampled on a runout fixture.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.