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Get the right screw on the first grab with this 190‑piece assortment of #8 black truss head self‑tapping screws. The wide, flat‑bottom truss head spreads clamp force to stop pull‑through in thin sheet metal, plastic, and plywood, while the sharp, hardened thread cuts its own tight path — no pilot hole in most materials. Made from 410 stainless steel with a black oxide coating, each screw combines higher strength than standard 304 with a dark, non‑reflective finish that blends into shadowed assemblies. The kit covers five practical lengths from 1/2″ to 1‑1/4″, putting a professional‑grade fastener within arm’s reach for HVAC ducting, auto panels, trailer trim, furniture, and general workshop use.
| Size | Diameter | Head Style | Drive | Material & Finish | Qty |
|---|---|---|---|---|---|
| #8 x 1/2″ | #8 (~4.2 mm) | Truss Head | Phillips | 410 Stainless, Black Oxide | 50 |
| #8 x 5/8″ | #8 (~4.2 mm) | Truss Head | Phillips | 410 Stainless, Black Oxide | 50 |
| #8 x 3/4″ | #8 (~4.2 mm) | Truss Head | Phillips | 410 Stainless, Black Oxide | 40 |
| #8 x 1″ | #8 (~4.2 mm) | Truss Head | Phillips | 410 Stainless, Black Oxide | 30 |
| #8 x 1‑1/4″ | #8 (~4.2 mm) | Truss Head | Phillips | 410 Stainless, Black Oxide | 20 |
Total: 190 pieces. #8 thread diameter approx. 4.2 mm. Lengths measured from under the head.
In most thin sheet metal (up to about 1.5 mm), softwood, and plastic, you can drive these screws directly without a pilot hole. For thick steel or dense hardwood, a small pilot hole reduces driving torque and gives the best thread engagement.
410 stainless is harder and stronger than 304, and the black oxide coating adds extra surface protection. It offers good atmospheric corrosion resistance for indoor and mild outdoor use. It is magnetic, which can be useful for retrieval.
The black oxide finish is bonded to the metal and is very durable under normal driving conditions. It won’t peel like paint. Over time in abrasive environments, it may show light wear, but the stainless base will still resist corrosion.
#8 truss head screws typically require a #2 Phillips bit. Using a sharp, properly sized bit prevents cam‑out and protects the drive recess.
