HARDDRIVE SKU: 820-57005

Harddrive Seat Screw Knob 1/4-20 Black - Harley & Indian V-Twin

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About Harddrive

Harddrive is the house performance and replacement line built for American V-twins, covering everything from engine hardware and electrical to controls, lighting and chassis parts. The range is aimed squarely at Harley-Davidson and Indian riders who want a direct-fit part without dealer pricing, and it spans decades of model years — from Evolution-era Softails to current Milwaukee-Eight baggers.

Upgrade your V-twin's seat mounting with this Harddrive 1/4-20 black knob-style seat screw. It offers tool-free convenience for seat removal and installation, perfect for quick access.

Why riders pick this

  • Tool-free seat removal and installation
  • Fits 1996 and newer V-twin motorcycles
  • Features a common 1/4-20 thread pitch
  • Black knob head for a custom look
  • Includes washer for secure mounting

The Harddrive Seat Screw with a black knob head and 1/4-20 thread pitch provides both convenience and style for your V-twin motorcycle. Designed for 1996 and newer Harley-Davidson and Indian Motorcycle models, this screw allows for easy, tool-free removal and installation of your seat. It's a practical upgrade for riders who frequently access under-seat components or swap seats.

Convenience and Style Combined

  • Knob head design for tool-free seat removal
  • 1/4-20 thread pitch for 1996 and newer V-twins
  • Durable black finish for a stealthy look
  • Includes a washer for proper seating and protection
  • Direct replacement for factory seat hardware

Quick Access, Secure Fit

This knob-style seat screw is an excellent choice for riders who appreciate quick and easy access to their battery, fuse box, or other under-seat items. The integrated knob allows you to unscrew the fastener by hand, eliminating the need for tools. Despite its convenience, it still provides a secure hold for your seat, ensuring peace of mind on every ride.

Specifications

  • Brand: Harddrive
  • Manufacturer Part #: 05-330BK
  • UPC: 191361125515
  • Thread Pitch: 1/4-20
  • Length: 6.37 in
  • Width: 3.74 in
  • Height: 0.7 in
  • Weight: 0.022 lbs
  • Country of Origin: China (Taiwan)

Common questions

Will this knob seat screw fit my pre-1996 Harley or Indian?

No, this screw has a 1/4-20 thread pitch, which is for 1996 and newer V-twin models. Pre-1996 bikes use a 1/4-28 thread pitch and require a different part.

Is the washer included with this seat screw?

Yes, a washer is included in the package. It should be installed between the knob head and the seat pan for proper seating and to protect your paint.

What is the benefit of a knob head seat screw?

The knob head allows for quick, tool-free removal and installation of your motorcycle seat, making it convenient for accessing components or swapping seats.

Ordering from Vtwinbikers

  • Brand new, sourced through authorized US distribution — never used, never grey-market.
  • Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
  • Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
BRANDHarddrive
TYPEHardware/Fasteners/Fittings
SKU820-57005
WEIGHT0.02 lb
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
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