Three Sigma Manufacturing, Inc
Kent, Washington · Machining & Metalwork Contact only AS9100
Est. 1991 · AS9100, ISO 9001 · machining +3 · ✓ verified live · Aug 2026
CapabilitiesmachiningprototypinggrindingEDM
OwnershipSmall Disadvantaged Business
Phone
Website
Founded
1991
Site verified live
Yes
Secure (HTTPS)
Yes
Mobile-friendly
Yes
Website platform
WordPress
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Compiled from threesigma.net and public sources — a free listing, never paid placement.