5/16-18 Flanged Button Head Socket Cap Screw Bolt With Slide-In Economy T-Nut Combo 0.687 Inch Length Black Zinc Finish 25 Pack Perfect For 8020 15 Series Aluminum Framing Builds

5/16-18 Flanged Button Head Screw & T-Nut for 15 Series
✔️ 25-pack: 0.687 in screw length + slide-in T-nut, black zinc

These 5/16-18 flanged button head socket cap screws pair with 5/16-18 slide-in economy T-nuts to create a ready-to-mount combo for 15 Series aluminum extrusion tracks (8020). The black zinc finish resists corrosion and blends with most framing builds, making it a handy choice for DIY machinists setting up brackets and plates on framing systems.

✅ 3330 - 5/16-18 x 0.687 in (17.46 mm) flanged button head screw with 3/16 in hex drive
✅ 3278 - 5/16-18 slide-in economy T-nut, offset thread
✅ Black zinc finish on steel for durability
✅ Pack of 25 pieces for quick builds
✅ Fits 15 Series / 1.5 in aluminum extrusion tracks

💡 What is a handy use case for a 5/16-18 flanged button head screw and slide-in T-nut in 15 Series aluminum framing?

This setup is handy for quick, solid mounting of brackets and plates to extrusion tracks. - 5/16-18 button head screw, flange, 0.687 in length (17.46 mm), 3/16 in hex drive - T-nut with offset thread to anchor brackets securely in 15 Series tracks - Fits 15 Series extrusion tracks (1.5 in base) for easy framing - Black zinc-coated steel for durable, corrosion-resistant joints