Borg BLS517MGPRO Knob - Marine Grade Pro - Suits 5000 Series - Black
The Borg BLS517MGPRO is a spare Marine Grade Pro knob in black for Borg 5000 Series locks. It is supplied as a single knob (pack of one) and retrofits in place of a standard lever where a knob is preferred.
Marine Grade Pro is Borg's highest corrosion tier, suited to exposed and coastal positions. It is the finish match for the black Marine Grade Pro variants of the BL5001 and BL5051. When converting from a lever to a knob, confirm spindle and latch compatibility with us first.
The BLS517MGPRO is brought in to order and cannot be returned for change of mind, so confirm it is the right knob for your lock and contact us for the current lead time before ordering. Your rights under the Australian Consumer Law for faulty goods are unaffected.
Key Features
- Genuine Borg spare knob for the 5000 Series.
- Marine Grade Pro finish for exposed and coastal positions.
- Black.
- Retrofits in place of a standard lever.
- Supplied as a single knob (pack of one) - knob only.
What's in the Box
- 1 x Borg 5000 Series knob (Marine Grade Pro, black)
Suitable Uses
- Retrofitting a knob in place of a lever on a black Marine Grade Pro Borg 5000 Series lock.
- Coastal, marine and exposed installations where the highest corrosion tier is wanted.
- Servicing or refurbishing an existing installation - the complete locks are in our Digital Mechanical Locks range.
Available Finish Options
Black
(This Product)
STK BLS517MGPRO


Finish selection does not affect the mechanical function of the part.
Compatible Locks
The BLS517MGPRO retrofits in place of the standard lever on the Borg 5000 Series lever locks below. Each row opens the section of the lock's page that lists the knob. Confirm your lock model, spindle and latch with us before ordering.
The knob comes in four finishes - see Available Finish Options. Browse the complete locks under Digital Mechanical Locks and more spares under smart lock accessories.
Full Specifications
Frequently Asked Questions
It is Borg's highest corrosion tier, intended for exposed and coastal positions - our MG Pro and ECP guide explains the grades.
It is made for the Borg 5000 Series - the four lever locks under Compatible Locks. The black Marine Grade Pro variants of the BL5001 and BL5051 are the grade and finish match. Confirm your lock model before ordering.
Yes - it retrofits in place of a standard lever on compatible 5000 Series locks. Confirm spindle and latch compatibility when converting.
Additional Information
Warranty
All Borg locks are warranted against mechanical defects in materials and workmanship under normal use and service for a minimum of 12 months from date of sale. The warranty does not cover damage arising from misuse, vandalism, or improper installation. The lock must not be dismantled - doing so will invalidate the warranty. Proof of purchase required for all claims.
Download PDF Resources
Borg's one-page BL5000 Series brochure - the three handle styles (5000 round bar, 5400 flat bar and 5100 knob), the series finishes and dimensioned drawings of the keypads and inside handles. (Host lock series document.)
Borg's manual for the On The Bench (non-ECP) BL5000 Series - parts list, handing, fitting, the code change, troubleshooting and the drilling template. (Host lock series document.)
Borg's one-page BL5000 Series accessories sheet (LSC) - the keypad-only units, Lockwood conversion kits and scar plates for the 5000 Series. It does not list this knob. (Host lock series document.)
PDF Files - BLS517MGPRO
Borg's one-page BL5000 Series brochure - the three handle styles (5000 round bar, 5400 flat bar and 5100 knob), the series finishes and dimensioned drawings of the keypads and inside handles. (Host lock series document.)
Borg's manual for the On The Bench (non-ECP) BL5000 Series - parts list, handing, fitting, the code change, troubleshooting and the drilling template. (Host lock series document.)
Borg's one-page BL5000 Series accessories sheet (LSC) - the keypad-only units, Lockwood conversion kits and scar plates for the 5000 Series. It does not list this knob. (Host lock series document.)
Borg Locks Warranty
Borg products sold in Australia are covered against mechanical defects in materials and workmanship under normal use and service. Warranty claims are handled by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries.
Warranty Summary
What the Warranty Covers
- Mechanical defects in materials and workmanship
- Defects arising under normal use and service conditions
- Repair or replacement of defective units at the discretion of the Australian distributor (LSC)
What the Warranty Does Not Cover
- Damage arising from misuse, vandalism, or abuse
- Damage resulting from improper installation
- Locks that have been dismantled - dismantling invalidates the warranty
- Normal wear and tear
- Cosmetic damage not affecting function
How to Make a Claim
- Contact Terry's Tradies Pty Ltd first if you purchased through us or one of its associated trading names - we will assess the issue and manage the warranty process with LSC on your behalf. You do not need to contact LSC or Borg Locks UK directly.
- Have your proof of purchase ready (receipt or order confirmation).
- Warranty claims for Borg products in Australia are processed through LSC, the authorised Australian importer and distributor. Where an item is returned to LSC, freight charges must be prepaid and the item returned within the warranty period.
- If LSC finds the returned item to be defective, it will be repaired or replaced, and a detailed assessment report is provided to the customer after examination.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Borg manufacturer warranty above operates alongside - and does not limit - these statutory rights.
Confused? Overwhelmed? We get it.
Choosing the right smart lock can be genuinely tricky - door types, backsets, app platforms, compatibility with your existing hardware... there is a lot to consider. We have decades of experience fitting locks of all types, including smart locks, and we are happy to help.
Our expert recommendation service is free. Upload a few photos of your door and describe what you need, and one of our qualified locksmiths will give you a personalised recommendation.
Get Your Free Recommendation →How it works - three easy steps:
1. Upload photos
A few clear shots of your door, lock and frame - inside and out.
2. We assess
Our locksmith reviews your setup and requirements - door type, weather exposure, how you want to use it.
3. You get a recommendation
A personalised recommendation tailored to your door, budget and needs. No pressure, no upsell.
Also useful while you are deciding:
