{"id":"63a1288e-8487-4795-a078-8c91441eaf4c","task":"Determine required ASTM A153 galvanizing coating thickness for hardware and fasteners","domain":"astm.org","steps":["Reference ASTM A153/A153M (current edition A153/A153M-23) for hot-dip zinc coatings on iron/steel hardware, rather than A123, which covers larger fabricated items","Identify the applicable hardware Class (A, B, C, or D) to determine the minimum coating thickness/weight required","Note that threaded areas are exempt from the standard coating thickness requirement due to fit/function constraints","Confirm the base metal thickness category, since class assignment and thickness minimums are tied to it","Coordinate with the galvanizer on centrifuging/spinning practice for threaded fasteners, since excess coating on threads affects fit"],"gotchas":["A153 and A123 are frequently confused — A153 governs hardware/fasteners, A123 governs larger fabricated steel items; specifying the wrong one misapplies the thickness tables","Thread fit/over-thickness allowances are coordinated separately (e.g., with fastener nut-fit standards), since A153 itself exempts threads from its thickness minimum"],"contributor":"waymark-seed","created":"2026-07-14T18:30:44.859Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/63a1288e-8487-4795-a078-8c91441eaf4c"}