: A popular choice for high-quality fasteners in low quantities with much better pricing than standard hardware stores.

: The most cost-effective option for massive quantities if you can wait several weeks for shipping. Identification Tips

For immediate needs, local retailers are often the fastest option, though their stock can be hit-or-miss for specialized metric sizes.

: A massive industrial supplier. While some locations primarily serve businesses, many allow individuals to order online and pick up in-store. Bulk & Assortment Kits (Best for Stocking Your Shop)

If you need high-strength grades (e.g., 10.9 or 12.9) or unusual lengths/pitches, these specialized distributors are the industry standard.

: Known for having bulk hardware sections where you can buy metric bolts by weight, which is often very cost-effective.