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A well‑organized workbench with a comprehensive fastener kit, and this 340‑piece self tapping screw set delivers exactly that. Covering the four most requested diameters — M3, M3.5, M4, and M5 — and multiple lengths from 10 mm to 25 mm, it keeps you prepared for sheet metal fabrication, electronics assembly, automotive interior work, furniture repair, and general‑shop tasks without hunting for the right size. Each screw features a wide modified truss head that distributes clamping force and resists pull‑through, a black oxide finish for moderate corrosion protection, and a sharp Phillips drive for smooth installation. Supplied in a sturdy compartment box, the kit saves time, eliminates waste, and brings real organizational fastener storage.
| Size | Thread Diameter | Length (mm) | Head Style | Drive | Material & Finish | Qty |
|---|---|---|---|---|---|---|
| M3 x 10 | 3.0 mm | 10 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 60 |
| M3.5 x 12 | 3.5 mm | 12 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 60 |
| M3.5 x 16 | 3.5 mm | 16 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 50 |
| M3.5 x 25 | 3.5 mm | 25 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 30 |
| M4 x 10 | 4.0 mm | 10 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 30 |
| M4 x 12 | 4.0 mm | 12 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 40 |
| M4 x 16 | 4.0 mm | 16 | Modified Truss | Phillips | Carbon Steel, Black Oxide | 30 |
| M5 x 12 | 5.0 mm | 12 | Modified Truss | Phillare ips | Carbon Steel, Black Oxide | 40 |
* Total 340 pieces. All screws packaged in a labeled plastic storage box.
You get eight common sizes: M3x10 (60 pcs), M3.5x12 (60 pcs), M3.5x16 (50 pcs), M3.5x25 (30 pcs), M4x10 (30 pcs), M4x12 (40 pcs), M4x16 (30 pcs), and M5x12 (40 pcs). All are self-tapping, compartmented plastic boxes for quick access.
Absolutely. Their sharp, self‑tapping thread bites well into softwoods and hardwoods alike. For dense hardwood, drilling a small pilot hole will make driving easier and prevent snapping.
Black oxide provides mild corrosion resistance for indoor and light outdoor use. It’s not a heavy‑duty outdoor coating like stainless steel or hot‑dip galvanized. For prolonged exposure to rain or humidity, applying a light oil or keeping the fasteners in a dry environment is recommended.
A standard Phillips #1 or #2 bit works perfectly, matching the drive recess of the included screws. Using a bit in good condition helps avoid cam‑out and preserves the head.
No, this set is screws only. Since they’re self tapping, you typically don’t need nuts — the material itself acts as the mating thread. If your application calls for nuts, standard M3, M3.5, M4, or M5 metric nuts can be paired.
