100 Pack Stainless Steel 304 Hex Socket Button Head Cap Screws Kit Go-To 4-40 x 3/8 Inch 0.108 Inch Diameter 40 Threads Per Inch Button Head Bolts For Electronics Machinery And DIY Projects

100-Piece Stainless 304 Hex Socket Button Head Screws Kit
✔️ Includes 100 pcs #4-40 x 3/8" SS304 screws and 1 hex key in a box

This 100-piece kit delivers reliable stainless steel 304 hex socket button head screws, plus a chrome-vanadium steel hex key, all in a compact plastic storage box. Perfect for electronics enclosures, machine assemblies, and DIY projects where a clean, low-profile head and corrosion resistance matter.

✅ 100 pcs #4-40 x 3/8" hex socket button head screws 0.108" (2.75 mm) diameter, 40 TPI
✅ Thread length 3/8" (9.53 mm)
✅ Total length 0.43" (10.92 mm)
✅ Button head diameter 0.207" (5.26 mm), head height 0.055" (1.40 mm)
✅ Hex socket drive, internal hex, hex size 1/16"
✅ Stainless steel 304 corrosion resistant
✅ Includes 1 hex key (chrome-vanadium, nickel plated)
✅ Packed in a clear plastic storage box for quick access

💡 What is a hex socket button head screw used for in everyday assemblies? This handy fastener is ideal for securing panels, enclosures, and components where a flush head is needed. - ideal for electronics and machinery assemblies - works with a hex key for precise tightening - stainless 304 offers corrosion resistance in many environments - great for DIY projects requiring a clean, secure fit