Alpha® 20mm Flange Adapter — M14-2 Thread (FAH-M14)The Alpha® 20mm Flange Adapter (FAH-M14) lets you mount large flush-cutting blades — eight inches or larger with eight mounting holes — onto a grinder or polisher with an M14-2 spindle. Engineered for contractors, stone fabricators and monumentalists who need a secure, repeatable mount for flush cuts, it is machined from durable, high-quality steel and ships ready to use with all the parts required to install. A 5/8"-11 thread version (FAH-5/8) is available as a separate listing.Features Designed for flush-cutting blades 8" or larger with 8 mounting holes M14-2 thread — fits any grinder/polisher with the matching M14 spindle 20mm bore for standard large flush-cut blade arbors Machined from durable, high-quality steel for long service life Easily mounts to any 8-hole large flush-cutting blade Ships with all parts needed for installation — no separate hardware Engineered for contractors, stone fabricators and monumentalists .dst-accordion { margin-top: 25px; border: 1px solid #FDDCC5; border-radius: 6px; overflow: hidden; } .dst-accordion-item { border-bottom: 1px solid #FDDCC5; } .dst-accordion-item:last-child { border-bottom: none; } .dst-accordion-toggle { display: none; } .dst-accordion-label { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700; color: #231F20; background: #fff; transition: background 0.2s; } .dst-accordion-label:hover { background: #FFF3EB; } .dst-accordion-label::after { content: '+'; font-size: 22px; font-weight: 700; color: #F15C22; transition: transform 0.3s; } .dst-accordion-toggle:checked + .dst-accordion-label { background: #FFF3EB; } .dst-accordion-toggle:checked + .dst-accordion-label::after { content: '\2212'; } .dst-accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 20px; background: #fff; } .dst-accordion-toggle:checked ~ .dst-accordion-content { max-height: 5000px; padding: 15px 20px 20px; } Models / Part Numbers Part No. Type Thread Bore Hole Pattern UPC FAH-5/8 Flange Adapter 5/8"-11 20mm 8-hole 749173470318 FAH-M14 † Flange Adapter M14-2 20mm 8-hole TBD How to Use Confirm your grinder/polisher spindle is M14-2 (this flange will not fit 5/8"-11 spindles — use the FAH-5/8 part for those). Remove any existing flange or guard hardware from the spindle. Thread the FAH-M14 body onto the M14-2 spindle and seat fully. Place the 8"+ flush-cutting blade onto the 20mm flange boss, aligning the eight mounting holes. Install the supplied bolts through all eight blade holes and tighten in a cross pattern to seat the blade flat. Verify the blade runs true with no wobble before powering up. Specifications by Variant 20mm — Flange Adapter — FAH-M14 Part No. FAH-M14 UPC Not published by vendor Size 20mm Type Flange Adapter Thread M14-2 Max RPM — Recommended For 8"+ flush-cutting blades with 8 mounting holes Packaged Weight 0.90 lbs Package Dimensions 7" x 7" x 1.25" Commodity Code 8466.91.0000 Country of Origin China Common Specifications Property Detail Application Mounting large 8"+ flush-cutting blades onto grinders/polishers Bore 20mm Hole Pattern 8 mounting holes Thread (this listing) M14-2 Material High-quality steel Compatible Blades Any 8" or larger flush-cutting blade with 8 mounting holes Other Thread Sizes 5/8"-11 (FAH-5/8) sold as a separate item Country of Origin China Related & Companion Products Alpha® Flange Adapter — 5/8"-11 Thread (FAH-5/8) Alpha® Flush-Cutting Blades (8" and larger) Alpha® Angle Grinders & Polishers FAQs What blades does the FAH-M14 fit?Any flush-cutting blade that is 8" or larger and has 8 mounting holes around a 20mm bore.My grinder has a 5/8"-11 spindle — can I still use this?No. The FAH-M14 has M14-2 internal threads. For 5/8"-11 spindles, use the FAH-5/8 part number instead.What does “20mm” refer to?The 20mm dimension is the bore (center hole) of the flange where the blade seats — it is the standard center bore for large 8-hole flush-cutting blades.Does the FAH-M14 come with mounting bolts?Yes. It ships with all the parts required to install the blade to the flange.Are other thread sizes available?Alpha offers 5/8"-11 (FAH-5/8) and M14-2 (FAH-M14) as catalog parts. Other spindle/thread combinations may be available by special order — contact Alpha or your dealer. VideosNo product-specific videos are currently available from the manufacturer or DST. DocumentationNo data sheets currently published by the manufacturer for this product. ⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.
