Quality Starts With a Controlled Specification
Evidence, drawing approval and inspection controls for NM coupling orders.
Quality for a bored coupling is not proven by a generic certificate or an attractive product photo. It begins when the application, bore, keyway, hub and inspection requirements are made unambiguous.
Evidence hierarchy
The supplied NM catalogue is the source of record for the website's family ratings and dimensions. Approved order drawings control the manufactured configuration. External web sources are used only for current selection and safety context, never to copy another manufacturer's ratings into the NM range.
Drawing review
- Model and catalogue reference
- Driving and driven bore diameters and tolerances
- Keyway standard, width, depth and location
- Hub dimensions, centre gap and retention features
- Agreed material, finish, marking and documentation
- Inspection characteristics and acceptance method
Inspection planning
Depending on the agreed order, inspection can address bore size, keyway geometry, critical lengths, outside diameter, runout, visual condition, marking and packaging. The website does not claim a fixed inspection plan, material certificate or conformity mark unless it is included in the written quotation and order.
Traceable change control
Any deviation from the approved drawing should be resolved before shipment. Revised drawings need clear revision identity and customer approval where required. This protects both replacement fit and future maintenance records.