Choose from our selection of M3 bolts, including hex head screws, socket head screws, and more. Same and Next Day Delivery.

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Choose from our selection of screw size identifiers, screw, bolt, and nut size identifiers, reference charts, and more. Same and Next Day Delivery.

Choose from our selection of M3 nuts, including hex nuts, locknuts, and more. Same and Next Day Delivery.

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Choose from our selection of metric Allen bolts, including alloy steel socket head screws, 18-8 stainless steel socket head screws, and more.

M3. M3.5. M3.9. M4. M4.2. M4.8. ... The head sits flush with countersunk holes while the bolt stays in ...