400pc #8 #10 #12 Hex Washer Self-Drilling Tek Screws – 410 Stainless Steel Kit

400pc #8 #10 #12 Hex Washer Self-Drilling Tek Screws – 410 Stainless Steel Kit

Name: 400pc #8 #10 #12 Hex Washer Self-Drilling Tek Screws – 410 Stainless Steel Kit
Brand: HomeDIYer
SKU: GBTST0008
Price: 19.49 USD
Availability: InStock

$19.49 USD

In stock

Provided by HomeDIYer

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🔩 400-Piece Hex Washer Head Self-Drilling Screw Kit – 410 Stainless Steel (#8, #10, #12)

Get through metal roofing, steel studs, and sheet metal fast with this 400-piece hex washer head self-drilling screw assortment from GooBetter. Each screw features a hardened drill-bit tip that bores its own pilot hole and taps tight threads in one shot — no separate drill bit, no pre-drilling required through thin gauge steel and wood. The wide hex washer head delivers a generous bearing surface to prevent pull-through and lets you apply high torque with a standard socket, so you can drive them hard without cam-out. Manufactured from 410 stainless steel, these screws offer higher hardness and strength than standard 304, with solid atmospheric corrosion resistance for indoor, outdoor, and mild industrial environments. The kit includes all three critical Imperial diameters — #8, #10, and #12 — in the most-used lengths from 1/2″ to 2″, packed in a sturdy compartmented storage box so you can grab the exact size without digging through loose hardware.

⚙️ Key Features – 410 Stainless Hex Washer Self-Drilling Screws

Self-drilling tip eliminates the need for a pilot hole — one-step fastening through sheet metal up to 2 mm, wood, and plastic
410 stainless steel provides higher strength and hardness than 304, with good atmospheric corrosion resistance indoors and outdoors
Hex washer head with external socket drive allows high-torque fastening — virtually no cam-out or stripping
400-piece kit covers #8, #10, and #12 diameters in 1/2″, 5/8″, 3/4″, 1″, 1-1/2″, and 2″ lengths — organized and ready to use
Silver natural finish — no plating to wear off, corrosion protection is built into the metal
Supplied in a practical, reusable plastic storage box with divided compartments for each size
Ideal for metal roofing, HVAC ductwork, steel framing, auto panels, wood-to-metal connections, and general construction

📋 Technical Specifications – Hex Washer Self-Drilling Tek Screws

Size	Diameter (Approx.)	Length	Head Style	Drive	Material & Finish	Qty
#8 × 1/2″	#8 (~4.2 mm)	1/2″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	80
#8 × 3/4″	#8 (~4.2 mm)	3/4″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	80
#8 × 1″	#8 (~4.2 mm)	1″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	60
#10 × 1/2″	#10 (~4.8 mm)	1/2″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	60
#10 × 3/4″	#10 (~4.8 mm)	3/4″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	40
#10 × 1″	#10 (~4.8 mm)	1″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	30
#12 × 3/4″	#12 (~5.5 mm)	3/4″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	25
#12 × 1-1/2″	#12 (~5.5 mm)	1-1/2″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	15
#12 × 2″	#12 (~5.5 mm)	2″	Hex Washer Head	External Hex Socket	410 Stainless Steel, Natural	10

Total: 400 pieces. All screws are supplied in a compartmented storage box. Imperial sizing: lengths measured from under the head.

❓ Frequently Asked Questions – 410 Stainless Self-Drilling Screws

🔸 Do I really need to pre-drill a hole?

No. The self-drilling tip will penetrate sheet metal up to about 2 mm thick and wood composites without a pilot hole. For thicker materials, a small pilot hole can assist, but in standard roofing, siding, and framing applications, these are true one-step fasteners.

🔸 How does 410 stainless compare to 304 stainless?

410 stainless is harder and offers higher strength than 304. It provides good atmospheric corrosion resistance for indoor and mild outdoor use. It is also magnetic. For constant saltwater or harsh chemical exposure, 304 or 316 would be preferable, but for roofing, framing, automotive, and general construction, 410 holds up very well.

🔸 What size socket do I need?

Most #8 and #10 Tek screws use a 5/16″ (8 mm) hex socket. #12 screws may use 5/16″ or 3/8″ depending on the exact head size. A magnetic nut driver bit in both sizes will cover the entire kit.

🔸 Can these be used for wood-to-metal connections?

Yes. The self-drilling tip punches through the metal layer, and the thread bites firmly into the wood substrate beneath. They are widely used for fastening metal roofing to timber purlins and for mixed-material structural connections.