Yale Unity Slim Screw Pack - Spindles, Screws and Spring - Black
The Yale Unity Slim Screw Pack (part number YURSSL-SCRP-01) holds the spindles, machine screws, compression spring and latch parts that join the internal and external escutcheons of a Yale Unity Slim Smart Lock through the door stile. It is a service and installation part, and it is the pack you order when a fixing is lost, damaged or the wrong length for the door.
The pack is deliberately over-supplied. It carries two spindle lengths and three screw lengths, and the installer selects the set that matches the door. A single Unity Slim installation uses one spindle, one pair of machine screws and the compression spring; everything else in the pack stays as spares. Between them, the supplied combinations cover doors from 35mm to 60mm thick, which is the Unity Slim's own published fitting range.
Every machine screw in the pack is stainless steel, and all use a combination square and Phillips drive so either bit will engage. The pack also includes a latch wear insert and a 2mm latch packer, which is why it is worth having on the van rather than only ordering it after something goes missing.
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Key Features
- Covers the full 35mm to 60mm door range. Four published spindle and screw combinations span the whole thickness range the Unity Slim is rated for, so one pack suits any compliant door.
- Two spindles supplied. A 64mm short spindle and a 79mm long spindle, so the drive between the escutcheons is correctly engaged rather than bottomed out or short.
- Six machine screws in three lengths. M4 x 39mm, M4 x 49mm and M4 x 59mm, two of each, so the pair you need is in the pack whatever the door measures.
- Stainless steel screws. All machine screws in the pack are stainless, which matters on coastal and exposed installations.
- Combination square and Phillips drive. Either driver bit engages the raised heads, which is useful when working one-handed on a door.
- Compression spring included. The spring is used in every one of the four published combinations, so a lost spring does not stop a job.
- Latch wear insert and 2mm latch packer included. Two small latch parts that are easy to lose during a strip-down and awkward to source separately.
- Genuine Yale trade pack. Part of Yale's published Unity Slim spares and accessories range rather than a generic fixing kit.
What's in the Box
- 1 x 64mm spindle
- 1 x 79mm spindle
- 1 x compression spring
- 2 x M4 x 39mm raised head, square and Phillips drive machine screw
- 2 x M4 x 49mm raised head, square and Phillips drive machine screw
- 2 x M4 x 59mm raised head, square and Phillips drive machine screw
- 2 x 8g x 7.5mm countersunk truncated, square and Phillips drive screw
- 1 x latch wear insert
- 1 x 2mm latch packer
A single installation uses one spindle, one pair of machine screws and the compression spring. The remaining screws and the second spindle are spares for other door thicknesses. That is by design, not an over-supply error.
Suitable Uses
- Replacing lost or damaged Unity Slim fixings after a service call, a door rehang or a strip-down.
- Moving a Unity Slim to a door of a different thickness, where the original spindle or screws no longer suit.
- Correcting an install fitted with the wrong spindle length, which is one of the most common causes of a smart lock that feels stiff or fails to retract cleanly.
- Installer and locksmith van stock alongside the strike packer, magnet housing and scar plate kit, so a Unity Slim job can be finished in one visit.
- Property managers and strata maintenance holding a small spares kit against a portfolio of Unity Slim locks.
This pack is cut for the Yale Unity Slim. The spindle sizes and screw lengths are matched to its escutcheons and lock case, and will not correctly suit the Yale Unity Entrance, the Yale Unity Security Screen Door lock or another brand's lock. It contains no lock, no jamb hardware and no wood screws for fixing a strike.
Door Thickness Selection Guide
Measure the door stile, then pick the row. This is the only decision the pack requires, and getting it right is what determines whether the lock operates smoothly.
44mm and 48mm each sit at the join between two rows. Where a door measures exactly on a boundary, take the shorter option first and check the escutcheon pulls down flush without the screw bottoming out. Measure the stile itself, not the door including a weather seal or a previously fitted plate.
Unity Slim Trade Pack Accessories - Item Codes
Yale publishes the Unity Slim spares and accessories as a trade pack range. The full published list is below, with the parts stocked as their own listing linked through.
Fitting and Compatibility
- Measure the stile before opening the pack. Take the thickness at the lock position, not at the edge or through a glazing bead, then read the selection table above.
- Add for anything sandwiched behind the escutcheon. A retrofit scar plate kit adds a plate and a gasket on each face, which can push a borderline door into the next row of the table.
- The spindle should engage fully without bottoming out. A spindle that is too long holds the escutcheons apart and loads the mechanism; too short and the drive is only partly engaged and will eventually round out.
- Fit the compression spring in every configuration. It appears in all four published combinations, not just the longest.
- Do not over-tighten the machine screws. They pull the two escutcheons together through the door; excessive torque distorts the escutcheon and can bind the mechanism.
- Keep the leftovers. The unused spindle and screw pairs are the correct spares for that lock if the door is ever rehung or a plate kit is added later.
Full Specifications
Frequently Asked Questions
Measure the door stile at the lock position and read the selection table above. There are four published combinations covering 35mm to 60mm. If you are unsure how to take the measurement, Chapter 02 covers door thickness.
Because one pack has to cover the whole 35mm to 60mm range. You use one pair, matched to your door, and keep the other four as spares. The same applies to the two spindles: one goes in, one stays in the box.
Both boundary figures appear in two rows of Yale's guidance. Start with the shorter screw and check the escutcheon draws down flush and the lock operates freely. If the screw bottoms out before the escutcheon seats, step up to the next length. Do not force it.
We would not. These are M4 stainless machine screws in specific lengths, drawing two escutcheons together through a door and holding a lock in alignment. A substitute of the wrong length, thread or material will either bottom out, sit proud, or corrode on an exposed door. The spindle in particular is a drive part, not a fixing, and a generic one will not match.
No. The spindle lengths and screw sizes are matched to the Unity Slim escutcheons and lock case. The Unity Entrance and the Unity Security Screen Door lock use different hardware and different fixings.
Additional Information
- The wrong spindle is a leading cause of smart lock complaints. A lock that feels stiff, retracts slowly or works intermittently is very often a spindle length problem rather than a motor or battery problem. See the first of the three common DIY mistakes.
- A plate kit changes the effective door thickness. Adding the retrofit scar plate kit puts a 0.9mm plate and a 1.6mm gasket on each face. On a door already near a boundary in the selection table, that is enough to move it into the next row.
- Stainless matters on the Gold Coast. These fixings pass through the full thickness of an external door and are effectively unserviceable once the lock is in. Salt air is the reason Yale specifies stainless here rather than plain plated steel, and it is the reason a generic substitute is a false economy. Our note on coastal environments and lock lifespan covers the wider picture.
- Order it with the lock, not after. If a Unity Slim is going onto a thicker-than-standard door, or onto a door that also needs a plate kit, having this pack on hand at first fit avoids a return visit for the sake of a 10mm difference in screw length.
- Already own the lock? Setup, master code and factory reset are covered in our Yale Unity Slim troubleshooting and reset guide, including what to check when a door does not close or operate cleanly.
Warranty
Genuine Yale products bought new in Australia from authorised retailers are covered against defects in materials and workmanship for:
- Mechanical parts: 10 years
- Electrical and electronic components: 3 years (batteries excluded)
- Keys: 12 months
PDF Downloads
Yale Unity Slim Brochure (PDF)
Unity Slim Screw Pack - Selection, Fitting and Troubleshooting
Everything below is specific to the Yale Unity Slim screw pack and the escutcheon fixings it supplies. For the lock itself see the Yale Unity Slim product page, and for general installation faults see Chapter 12 - Installation and Troubleshooting.
Selecting the right parts
Across the stile at the height the lock sits, with the door open, using a rule or vernier on the bare timber or aluminium. Do not measure over a weather seal, a previously fitted plate or a bead. If a scar plate kit is going on at the same time, add its plate and gasket thickness to each face before reading the table.
Because they do two different jobs. The screws clamp the two escutcheons together, so their length tracks the door thickness plus the escutcheon depth. The spindle transmits the handle drive through the lock case, so it steps up only when the door gets deep enough that the shorter spindle no longer engages fully at both ends. That is why the four published combinations mix and match rather than stepping up together.
They are the countersunk truncated screws in the pack, a different type from the six long M4 machine screws. They are not part of the four door-thickness combinations, which use only a spindle, a pair of machine screws and the spring. Keep them with the lock's own fixings.
Fitting
Firm and even, then stop. These screws pull two escutcheons together through the door, so there is nothing to bottom out against except the escutcheons themselves. Over-tightening bows the escutcheon, pinches the lock case and can leave a mechanism that binds or a motor that draws more current than it should on every cycle.
No. The heads take a combination square and Phillips drive, so a standard Phillips bit works. A square bit will hold the screw more securely on a vertical door face if you have one, which is useful when you are feeding a long screw blind through a stile.
It is used in all four published door-thickness combinations, so it goes in regardless of door depth. If a lock has been apart and the spring has gone missing, this pack is the correct way to replace it rather than substituting a generic spring of approximate rate.
Troubleshooting
Very often, yes. A spindle that is too long holds the escutcheons apart and preloads the mechanism; one that is too short only partially engages the drive and will wear or round out over time. Check the spindle against the door thickness before suspecting the motor or the batteries. Chapter 12 lists this under wrong spindle position.
Indirectly, yes. Anything that makes the mechanism work harder on every cycle - a preloaded spindle, an over-tightened escutcheon, a door that drags on the frame - increases the current the motor draws each time. If battery life is well short of expectation, check the mechanical fit before assuming a fault. The Unity Slim battery and power section sets out what normal looks like.
If they are sound, yes. Replace them if the heads are chewed, the thread is damaged, or there is any sign of corrosion - these fixings run right through an external door and are not serviceable once the lock is back together. Coastal installations are the usual reason a pack gets ordered. See our note on coastal environments and lock lifespan.
Related products, guides and chapters
Host lock: Yale Unity Slim Smart Lock with Multipoint Locking System (see its configuration matrix, specifications and accessories).
Unity Slim spares: Retrofit Scar Plate Kit | Heavy Duty Magnet Housing Assembly | Stainless Steel Plate Strike Assembly | Strike Packer.
Other Yale smart locks: Unity Entrance Matt Black | Unity Entrance Silver | Unity Security Screen Door Lock | ByYou Pro | Connect Plus Hub 2.
Buyer's Guide chapters: Ch 02 - Measuring Your Door | Ch 11 - Standards and IP Ratings | Ch 12 - Installation and Troubleshooting.
Related reading: Smart Lock Not Locking? 3 Common DIY Mistakes | Yale Unity Slim Troubleshooting and Reset Guide | How Long Do Digital Door Locks Last? | Site Survey and Installation Services.
What's in the Box - Unity Slim Screw Pack
Nine line items in every pack, set out below by component with what each one is for.
No lock, no escutcheons, no jamb hardware and no wood screws for a strike. Jamb-side parts are covered by the Stainless Steel Plate Strike Assembly, the Strike Packer and the Heavy Duty Magnet Housing Assembly.
Yale Unity Slim - PDF Resources
Yale Unity Slim Brochure (PDF)
The brochure covers the Unity Slim lock range these fixings are made for, including the escutcheons the spindles and machine screws draw together. Full lock detail, the configuration matrix and specifications are on the Yale Unity Slim product page.
Yale Warranty
Yale branded products are manufactured and warranted in Australia by ASSA ABLOY Australia Pty Ltd. Coverage is tiered by component type - mechanical parts, electrical and electronic components, and keys each carry their own warranty period. The summary below sets out each period, what is excluded, and how to make a claim through Gold Coast Smart Locks.
This warranty applies to genuine Yale products purchased new in Australia from ASSA ABLOY or its authorised resellers. It operates in addition to your rights under the Australian Consumer Law.
Warranty Summary
How to Make a Claim
For full returns and warranty claim procedures, visit our Returns & Warranty page - this is kept up to date and is the authoritative reference for current claim steps.
- Keep your proof of original purchase (invoice or receipt).
- Contact Gold Coast Smart Locks - operated by Terry's Tradies Pty Ltd and its associated websites, trading names, and subsidiaries - as your authorised retailer, and follow the steps on our Returns & Warranty page.
- Return the product securely packed to protect it in transit, together with your proof of purchase and your name, address, email and phone number.
- ASSA ABLOY assesses the claim. Where the warranty applies, they will (at their option) repair the product, replace it with the same or closest equivalent Yale product, or refund the price you paid.
Claims made directly to ASSA ABLOY require a Case Number from their Customer Service Department before goods are returned - products sent back without a Case Number may not be accepted. Costs of returning a product are the customer's responsibility.
What Is Not Covered
- Normal wear and tear.
- Misuse, abuse, accident, or use outside Yale's published technical specifications.
- Improper maintenance or neglect, or failure to follow ASSA ABLOY's care and maintenance recommendations.
- Use of batteries other than those specified; batteries themselves are not covered.
- Unauthorised alteration, modification or repair by anyone other than ASSA ABLOY authorised personnel.
- Custom orders made to components or specifications supplied by someone other than ASSA ABLOY.
- Goods that were not new when purchased, second-hand goods, or products not originally sold in Australia through ASSA ABLOY or an authorised reseller.
- Products with brands, marks, plates, numbers or other ASSA ABLOY information defaced or removed.
- Use of substitute, replacement or non-genuine ASSA ABLOY parts or cylinders.
- Corrosive exposure, including vapours, chemicals, abrasive compounds, contamination, pollution, coastal air, salt spray and high humidity.
- Removal, refitment or replacement of products, and any associated charges.
Important Notes
Batteries are consumable and are not covered. Cosmetic finishes and appearance are excluded. Stainless steel resists staining but is not stain-proof - tea staining is a natural process and is not covered where cleaning and maintenance guidelines have not been followed.
Damage from salt spray, coastal air, high humidity and other corrosives is excluded. In Gold Coast and coastal locations, choose a suitable finish and follow the care and maintenance guidance to protect your hardware and preserve your cover.
Your Rights Under the Australian Consumer Law
This manufacturer's warranty is in addition to other rights and remedies you may have under the law. 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 to compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure.
Further Information
Returns & Warranty - goldcoastsmartlocks.com.au
Download the Yale Warranty (PDF)
Official Yale warranty terms - yalehome.com.au
Manufacturer: ASSA ABLOY Australia Pty Ltd, 235 Huntingdale Road, Oakleigh VIC 3166. Tel: 1300WARRANTY. Email: 1300warranty@assaabloy.com
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