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Manufacturer Resources
Product Specs
- Division:
- Electrical H1
- Product Group:
- Fasteners
- Sub Division:
- Electrical-E H2
- Department:
- Electrical
- Product Subgroup:
- Screws
Metallics DSSU170B – Frequently Asked Questions
1) What size and type of screw is the Metallics DSSU170B?
It's a #12 x 3/4 inch self-tapping screw with a serrated hex washer head that also takes a slotted driver, in zinc-plated steel. The hex washer head lets you run them with a 5/16 inch nut driver or socket, and the slot gives you a flat-blade backup when the head is in a tight spot.
2) Will a 3/4 inch self-tapping screw work for attaching to sheet metal studs or enclosures?
Yes for thin-gauge work. The 3/4 inch length gives you about a half inch of thread past typical sheet metal, which is plenty of engagement for studs, boxes, and enclosure flanges. For thicker stacked material or wood blocking you want a longer tapper, since 3/4 inch runs out of thread fast.
3) How many screws come in a box of Metallics DSSU170B?
They ship 5,000 pieces to the box, so it's a bulk production pack rather than a contractor handful. That quantity suits panel shops, electrical rough-in crews, and MRO stockrooms standardizing on one sheet metal screw.
4) What does the serrated head on these #12 self-tapping screws actually do?
The serrations under the washer head bite into the surface as you seat the screw, which resists back-out from vibration and helps bond through paint or coating for electrical grounding continuity. That's why serrated hex washer head tappers get used on strut, enclosures, and sheet metal rather than a plain washer head.
5) Are zinc-plated steel screws OK outdoors?
Keep them inside. These are zinc-plated carbon steel, which handles dry interior electrical work fine but will corrode in wet, coastal, or chemically exposed locations. For exterior or damp settings, step up to a stainless or hot-dip galvanized fastener instead.
6) Do I need to drill a pilot hole for the Metallics DSSU170B?
It's a self-tapping screw, so it forms its own thread in sheet metal once the point is through. In heavier gauge or in hard material you'll still want a pilot sized for the #12 shank to avoid snapping heads or stripping the thread it just cut.
7) What is the Metallics part number for the 12 x 3/4 serrated hex washer head tapping screw?
Order it as Metallics DSSU170B. That single part number covers the #12 x 3/4 inch serrated slotted hex washer head tapper in zinc-plated steel, 5,000 to the box.
How fast can I get the Metallics DSSU170B delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Metallics DSSU170B come with a warranty?
Absolutely. The Metallics DSSU170B is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Metallics DSSU170B?
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