Toprecision — Precision Fastening & Connection Solutions

A surgical instrument or infusion pump lives a fastening life defined by cleaning chemistry, repeated autoclave cycles and audit-ready documentation.

Bottom line: for most Precision Screws applications the decision comes down to load, environment and assembly method — the Precision Screws guide walks through the selection.

Surviving sterilization

Autoclave steam at 134 °C, plus alkaline detergents, corrodes marginal stainless mercilessly. Specify A4 (316-class) with proper passivation; avoid crevices where bioburden hides — sealing washers under heads, smooth transitions, no trapped slots. Coated carbon steel is generally out: coatings chip under instrument-service handling and shed particles.

Materials and biocompatibility

• Implant-adjacent and skin-contact hardware: ISO 10993-evaluated materials or well-known implant alloys.
• No zinc or nickel coatings on patient-contact paths — nickel release is a regulatory topic.
• Lubricants must be medical-grade; standard anti-galling compounds are contaminants.

Documentation is part of the product

Material certificates, cleaning-agent compatibility data and change-control notifications come with the hardware, not on request. Topprecision supplies medical OEMs with passivated A4 micro and standard fasteners, medical-grade documentation sets, and lot traceability sized for design-history-file audits.

Industry fastening requirements

Need fasteners for EV battery packs?

Toprecision manufactures aluminum 6061/ZT68 bolts, LC-coated battery connectors and liquid-cooling quick-connect fittings for EV battery packs. Send the pack voltage and torque spec — we will supply the insulation rating and thermal cycling test data. Request EV fastening support.