For production quantities, sure, nobody in their right mind would source from McMaster Carr (or Grainger, or any similar company,) but for their niche, they hav

For production quantities, sure, nobody in their right mind would source from McMaster Carr (or Grainger, or any similar company,) but for their niche, they have a solid value proposition: they’ll get you small quantities of anything they carry incredibly quickly. For maintenance and repair (their primary market) or prototyping, that can be incredibly valuable.