Toprecision — Precision Fastening & Connection Solutions

First Article Inspection is the contract moment between design intent and production reality. Done well, it prevents a year of quality disputes; done as theater, it is a PDF nobody reads.

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.

What a useful FAI contains

Measurement against the drawing, balloon-numbered to every callout, with actual values — pass/fail summaries without numbers prove nothing. For fasteners add the functional tests the drawing implies: thread gaging (Go/No-Go), torque-preload sample data, hardness per class, and coating thickness with salt-spray reference lots.

PPAP levels in automotive supply

• Level 1: part submission warrant only — for trivial changes.
• Level 3: full package — dimensional results, material and performance test results, process capability (Cpk on key characteristics), control plan. The norm for new fastener part numbers.
• Level 5 with on-site review: safety-critical hardware.

What distinguishes a good supplier

The FAI should flag marginal characteristics honestly — a Cpk of 1.12 on head height is information, not failure. Topprecision issues FAI/PPAP packages with raw data attached, and walks customer SQEs through any characteristic below 1.33 before the warrant is signed.

Key specifications at a glance

Need fasteners for AI server racks?

Toprecision supplies M2.5–M4 micro screws, SMT standoffs and cage nuts for AI server and HPC chassis. Send the rack density and power rating — we will recommend the fastener type and supply tape-and-reel packaging. Request server hardware support.