CHENGSHUO | ENGINEERING CONCEPT REVIEW Reference concept: Precision shoulder spacer Page: https://chengshuoprecision.com/components/bushings-and-rings/precision-shoulder-spacer/ Our component / drawing revision: [ ] Assembly and mating interfaces: [ ] Please review: 1. Spacer drawing and assembly section showing actual contact faces 2. Material, finished condition, pilot and bore fits 3. Sample and repeat quantities plus dimensional and assembly checks Sample acceptance to agree: 1. Working length: Identify the two contact faces that establish the assembly distance. 2. Pilot fit: Specify pilot diameter, length and mating counterbore limits. 3. Face relationship: Nominate reference faces and required perpendicularity or parallelism. 4. Corner clearance: Define shoulder radius, relief and edge treatment at mating corners. Material grade / finish: [ ] Sample / production quantities: [ ] Target timing / delivery destination: [ ] AI-generated engineering concept, not a production photograph or completed delivery. Feasibility, process route and acceptance criteria require review of our actual drawing.