Find the right mortise cylinder set screw for hardware projects, repairs, or installations. This guide highlights five reliable options and explains who each product is best for, helping you choose based on material, size, and compatibility. Perfect for homeowners upgrading a door, maintenance teams outfitting storefronts, or locksmiths seeking durable, easy-to-use screws.
Overview of selected products:
- Marks Polished Brass Mortise Cylinder Set Screw for 22AC or 91A 2-Screw — Best for vintage or brass-finished hardware.
- MUZHUPGUZ 240 Pcs Set Screws Assortment Kit — Best for broad, mixed-installation needs with multiple metric sizes.
- Em-D-Kay Mortise Lock Set Screws (2 Screws Per Pack) — Best for standard mortise locks with quick replacement needs.
- FIXXELY Set Screws Assortment Kit — Best for high-volume projects needing black finish and various sizes.
- QAUYETM 430Pcs Set Screws Assortment Kit — Best for comprehensive kits with both metric and SAE sizes.
| Product | Best For | Key Feature |
|---|---|---|
| Marks Polished Brass Mortise Cylinder Set Screw | Brass hardware enthusiasts, restoration projects | Polished brass finish with 22AC/91A compatibility |
| MUZHUPGUZ 240 Pcs Set Screws Assortment Kit | General repairs and multiple door/fixture applications | Wide range of metric sizes, durable stainless steel |
| Em-D-Kay Mortise Lock Set Screws | Standard mortise locks in quick swaps | Two screws per pack for reliable pairing |
| FIXXELY Set Screws Assortment Kit | High-volume installations with black finish | 60 pieces, alloy steel, Allen keys included |
| QAUYETM 430Pcs Set Screws Assortment Kit | Comprehensive kit for diverse projects | 25 sizes, metric and SAE, robust 12.9 alloy steel |
Marks Polished Brass Mortise Cylinder Set Screw for 22AC or 91A 2-Screw
Best for restoring authentic brass hardware or matching brass finishes. The set screw is designed for mortise cylinders compatible with 22AC or 91A configurations, making it a straightforward pick for brass fixtures. The polished brass finish helps maintain a classic look on compatible doors. Use for hardware restoration or when matching existing brass tones is essential. Caution: verify cylinder compatibility before purchase to avoid misfit.
MUZHUPGUZ 240 Pcs Set Screws Assortment Kit
Best for bulk projects requiring many metric sizes. This kit includes M3, M4, M5, M6, and M8 screws with Allen keys, all made from stainless steel to resist rust and corrosion. The uniform threads and smooth edges reduce stripping and ensure secure grip. The transparent storage box makes organization easy for frequent installers. Caution: heavier kits can be overkill for small repairs or single replacements.
Em-D-Kay Mortise Lock Set Screws (2 Screws Per Pack)
Best for standard mortise locks that require two screws per pack. The Em-D-Kay set screws fit most mortise locking systems and are straightforward to replace in maintenance routines. The two-per-pack format helps ensure you have a matched pair for reliable operation. Limitation: not all specialty mortise cylinders may be compatible, so check the lock model beforehand.
FIXXELY Set Screws Assortment Kit
Best for durable black-coated set screws used across bathroom fixtures, knobs, and plumbing. This 60-piece kit covers a wide range of metric sizes with included Allen keys, offering strong holding power and corrosion resistance. Choose this if you need a compact, all-in-one kit for frequent installations. Limitation: the black finish may wear with heavy use, so consider adding a finish-specific option for high-visibility applications.
QAUYETM 430Pcs Set Screws Assortment Kit
Best for comprehensive coverage across projects. This kit includes 25 sizes in metric and SAE, with 12.9 grade alloy steel construction and black zinc plating for corrosion resistance. It comes in a transparent, labeled storage box for quick size identification. Use this for larger shops or competitions where diverse screw sizes are frequently required. Caution: the size range may be more than needed for simple repairs, potentially complicating selection for beginners.
Buying Guide
What to consider when choosing a mortise cylinder set screw:
- Material and finish: Stainless steel offers corrosion resistance; brass can match certain hardware aesthetics; black alloy provides a discreet appearance and durable surface.
- Size range: Match the thread pitch and diameter to your mortise cylinder model. When in doubt, choose a versatile kit with multiple sizes.
- Quantity and packaging: For frequent use, kits with many pieces reduce the need for repeated purchases. For small repairs, smaller packs may be sufficient.
- Included tools: Some sets include Allen keys or wrenches, which adds value for immediate installations.
- Storage and organization: Transparent cases help locate the right size quickly, especially in a workshop or service vehicle.
- Compatibility: Confirm that the screw type fits your mortise cylinder’s brand and model. Some products specify compatibility with 22AC, 91A, Adams Rite, or other standards.
FAQ
- What is a mortise cylinder set screw used for?
Answer: It secures mortise cylinders in doors and fittings, ensuring proper alignment and operation. - How do I know which size screw I need?
Answer: Check your mortise cylinder model and measure thread size and length; many kits list metric and SAE sizes for compatibility. - Are stainless steel screws better than brass?
Answer: Stainless steel offers higher corrosion resistance in many environments; brass matches certain finishes but may be less durable in high-stress areas. - Should I buy a large set or individual screws?
Answer: For professional use, a large assortment saves time and ensures availability across varied projects; for a single repair, a small pack may suffice. - Can these screws fit storefront mortise locks?
Answer: Some sets are designed for standard commercial cylinders; verify the lock brand and model to ensure compatibility. - Do these kits include installation tools?
Answer: Several kits include Allen keys, which speeds up installation and reduces the need to search for tools.