High-Precision SMT Surface Mount Screws

High-precision SMT screw supplied on tape and reel, positioned by the placement machine and fixed during reflow.

Key specifications

MaterialSUS304 Stainless Steel
Installationreflow soldering (SMT placement)
StandardEIA-481, IPC J-STD-002
Typical substrateboard supports and thermal contact faces
Key inspectionsheight, flatness, joint integrity

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Product overviewOverview

The base usually carries several solder feet to spread stress, and the top is a broad flat face to increase contact area. Precision here means the position after reflow, not only the machined dimensions: paste volume, pad design and part coplanarity together decide where the screw ends up. A screw that is on position before reflow can still shift as the paste collapses.

Material: SUS304 Stainless Steel. It is reflow-soldered with the rest of the SMT line.

Key featuresFeatures

Position after reflow depends on paste and pads, not only on the part.
Multiple solder feet distribute stress and improve shear capacity.
Height tolerance held to drawing so assembled gaps stay consistent.
SUS304 stainless for corrosion resistance and stable solderability.

Typical applicationsApplications

Shield-can support
Heatsink contact surfaces
Connector datum points

Selection notesSelection

Add centre feet on large plates to control board warpage during reflow.

Frequently asked questionsFAQ

How is position held during reflow?

By pad design, paste volume and the wetting balance of the joint. The part is not clamped, so an unbalanced pad pulls it off centre as the paste melts.

What matters during installation of the High-Precision SMT Surface Mount Screws?

Place it within the pad tolerance before reflow; surface tension will not pull a misplaced part back into position Position after reflow depends on paste and pads, not only on the part.

Specifications

Material	SUS304 Stainless Steel
Packaging	Tape & Reel packaging
Standard	EIA-481, IPC J-STD-002
Installation	reflow soldering (SMT placement)
Typical substrate	board supports and thermal contact faces
Key inspections	height, flatness, joint integrity

Manufacturing and inspection

Foot coplanarity is checked to ensure full wetting.Alternative materials and finishes can be quoted side by side during sampling, so cost and corrosion resistance can be traded off explicitly.