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 (25 Pack)
- 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!
| Exterior Finish | Zinc |
| Head Style | Socket Cap |
| Manufacturer Grade | Grade 2 |
| Material | Alloy Steel |
| Thread Size | 5/16"-18 |
| Brand | 80/20 |
| Product Type | Bolts |
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Get 5% off your next purchase.
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Enjoy free delivery on orders above $200.
Estimate delivery times: 12-26 days (International).
3-6 days (Domestic)
3-6 days (Domestic)
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Confidence-backed purchases with 30-day return support.
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SKU |
BRSRMAIHOZ6AYFDU |
Category |
Industrial & Scientific , Fasteners , Screws , Socket Head Screws |
Tags |
Package Dimensions
3.66 x 3.31 x 1.65 inches; 1.12 Pounds
Shipping & Delivery
At GofinchKart, we aim to deliver your order as quickly and safely as possible.
Domestic Shipping :
Orders are typically delivered within 3–6 business days.
International Shipping:
Estimated delivery time is 12–26 business days, depending on the destination and customs processing.
You will receive a tracking number once your order has been dispatched. Delivery times may vary during holidays or due to unforeseen delays.









