: Excellent for buying "assortment kits" that give you a range of lengths in a specific diameter (like an M3 or M4 kit), which is helpful for hobbies like 3D printing.
: 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) where to buy metric bolts
: The gold standard for professional projects. They carry almost every conceivable size with exceptionally fast shipping, though they often require buying in small packs rather than individuals. : Excellent for buying "assortment kits" that give
& Lowe's : Generally stock common metric hex bolts and socket caps, though they may lack more niche thread pitches. Bulk & Assortment Kits (Best for Stocking Your
Before buying, check the bolt head for markings to ensure you have the right part:
: Usually have radial slashes (e.g., three marks for Grade 5).
For immediate needs, local retailers are often the fastest option, though their stock can be hit-or-miss for specialized metric sizes.