8020, 3320, 15 Series, 5/16-18 x 0.687 Inch Flanged Button Head Socket Cap Screw Bolt (FBHSCS) with Slide-in Economy T-Nut Hardware Combo (12 Pack)

★★★★★ 4.6 150 reviews

$12.84
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$12.84
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Free shipping Free 30-day returns

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Product details

Management number 228765204 Release Date 2026/05/31 List Price $5.14 Model Number 228765204
Category
  • Includes 3330 - 5/16-18 x 0.687 11/16 inch flanged button head socket cap screw and 3278 - 5/16-18 slide-in economy t-nut offset thread.
  • Both the flanged button head socket cap screw and economy t-nut is made out of steel with a black zinc finish.
  • The bolt comes with a 0.66 inch diameter flange head and full thread length of 0.687 inch with a 3/16 allen hex drive. Thread size is 5/16-18.
  • The nut measures .638 x .222 x .984 inches long with an offset 5/16-18 thread.
  • Used to mount your brackets or plates to the track of the 15 Series or standard 1.5" based aluminum extrusion. Perfect for any DIY machinist!
ASIN B00T56JPG0
Brand 80/20
Size Name 12 Pack
Unit Count 12.0 Count
Item Weight 16 ounces
Part Number 3320-12
Thread Size 5/16"-18
Drive System External Hex
Finish Types Black Zinc
Manufacturer 80/20 Inc
Fastener Size 5/16"-18
Fastener Type Flanged
Material Type Alloy Steel
Exterior Finish Zinc
Item Dimensions 0.69 inches
Number Of Items 12
Thread Coverage Fully Threaded
Screw Head Style Socket Cap
Screw Point Style Socket Cap
Set Screw Thread Type Unified National Coarse (UNC)
Compatible Groove Diameter 0.31 Inches

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