Tools & charts
ChartTap Drill & Clearance Drill Size ChartChartDrill Size ChartCalculatorHardness Conversion ChartChartUNJ Thread DimensionsChartAS5202 Port Dimensions ChartChartCopper Busbar Ampacity ChartCalculatorSpeeds and Feeds CalculatorCalculatorISO Fits and Tolerances CalculatorChartSurface Finish ChartCalculatorMetal Weight CalculatorCalculatorTolerance Stack-Up CalculatorCalculatorTrue Position CalculatorCalculatorThread Engagement CalculatorCalculatorUnified Thread Dimensions Calculator
Materials
Alloy-by-alloy guides: properties, tempers, governing specs, machinability, and when to pick each one.
Carbon & Alloy Steel
Stainless Steel
Copper
Exotic Alloys
Engineering Plastics
Processes & Quality
Heat treatment, finishing, inspection, and machining strategy for hard materials.
Heat Treatment & Finishing
Inspection & Testing
Machining Guides
Design & Cost
Design-for-manufacturability rules that take cost out of a part before the RFQ goes out.
Buyer & Compliance
How to write an RFQ, read a material spec, and handle ITAR, CUI, and CMMC correctly.
RFQ & Purchasing
Specifications
Quick Reference
Machinist charts and calculators built from the standards. Free to use, no sign-up.
Machinist Charts
Calculators