--- product_id: 12751024 title: "PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8\" Shopsmith to 1\" x 8tpi" brand: "psi woodworking" price: "22652CFA" currency: XOF in_stock: true reviews_count: 13 category: "Psi Woodworking" url: https://www.desertcart.sn/products/12751024-psi-woodworking-l5818-lathe-headstock-spindle-adapter-5-8-shopsmith store_origin: SN region: Senegal --- # Extends spindle length 1.25" 1" x 8tpi threaded adapter Steel alloy durable build PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi **Brand:** psi woodworking **Price:** 22652CFA **Availability:** ✅ In Stock ## Summary > ⚙️ Upgrade your lathe game—threaded precision meets steel strength! ## Quick Answers - **What is this?** PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi by psi woodworking - **How much does it cost?** 22652CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/12751024-psi-woodworking-l5818-lathe-headstock-spindle-adapter-5-8-shopsmith) ## Best For - psi woodworking enthusiasts ## Why This Product - Trusted psi woodworking brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Pros:** Highly rated with 4.7 stars from over 2,000 users—join the community of woodworking managers who demand quality and reliability. - • **Precision Fit & Lock:** Includes set screw and wrench flats for secure attachment and effortless tightening—no slipping under pressure. - • **Extended Reach Advantage:** Adds over an inch of spindle length, unlocking new accessory possibilities and enhancing your lathe’s versatility. - • **Rugged Steel Construction:** Crafted from high-grade alloy steel to ensure long-lasting durability and precision in every turn. - • **Universal Thread Conversion:** Seamlessly convert your Shopsmith 5/8" non-threaded spindle to a 1" x 8tpi threaded mount for premium chuck compatibility. ## Overview The PSI Woodworking L5818 Lathe Headstock Spindle Adapter converts a Shopsmith 5/8" non-threaded spindle to a 1" x 8tpi threaded mount, enabling use of a wider range of chucks and accessories. Made from durable alloy steel, it extends spindle length by approximately 1.25", includes a set screw for secure locking, and features wrench flats for easy installation. Trusted by thousands of woodworking professionals, it offers a precise, reliable upgrade to your lathe setup. ## Description Product Description Converts your Shop Smith lathe spindle so that you can use chucks with a 1" x 8 tpi thread size. Adapts to your 5/8-inch no thread spindle to accomodate any 1" x 8 tpi female mount accessory. Made of steel, and has set screw to tighten to the flat on the spindle. Extends the spindle length over 1-inch. From the Manufacturer Converts your lathe spindle so that you can use a chuck with a different thread size Review: Good Quality, Great Price - The above picture of this adapter doesn't do it justice. I was surprised at the quality. This item is a large, heavy weight, finely machined and polished spindle adapter. Both ends screws on smooth. It's top quality at a price that's cheaper than PSI (Penn State Industries), sales it for. And a lot cheaper than other adapters are sold for. View my photos for more detail. It turns true and on center. It doesn't have set screws to lock it to the spindle for reverse operation, but I can drill and tap a couple of holes for set screws if it becomes necessary. It has a solid core on the male threads so you can't use a vacuum chuck. On the female end there are two flat spots for a wrench if necessary. I use an 'Adjustable Slip & Lock - Plumbers Nut Wrench,' its cheap light weight and can accommodate the large size of the adapter (search desertcart # TW408302). The adapter does jamb tight against the chuck and/or spindle so the wrench might come in handy. The nut wrench is also sold at local home improvement centers. This adapter screwed nicely onto my lathe's spindle, right over the shoulder of the spindle to mate with the shoulder of the adapter, as if it was made specifically for my lathe. I did read a magazine Q & A article where someone said their adapter didn't screw on far enough to seat onto the shoulder of the spindle and was asking if he could use a stack of large washers to fill in the gap. The answer was - not a good idea to use washers from the hardware store due to variation in hole ID and thickness from one washer to another. It was suggested to use 'Anti-Lock Lathe Spindle Washers' to fill in any gaps (search desertcart, about $2). Maybe this might help others, but it was not an issue with my lathe. Specs: OD at female end: 2 1/16" Depth of female pocket: 1 1/2" Depth of shoulder inside female pocket: 1/4" Length of male threaded end: 1" Total length: 2 3/4" Wrench size to fit flats: 1 13/16" Weight: 1 lb. 4.8 oz. [See my photos for more detail.] Review: Good product - Fits my lathe well. And fits in my chuck. Would recommend. Gets the job done! ## Features - Convert a Shopsmith 5/8" non-threaded lathe headstock spindle to 1" x 8tpi threaded - Allows a 5/8" non-threaded spindle to accept 1" x 8tpi threaded chucks, faceplates, and other woodturning tools and accessories - Made of steel; Weighs .65 pounds; Extends spindle length approximately 1-1/4" - Includes set screw to lock the adapter to the spindle - Flats allow for solid wrench tool grip for tightening and loosening from spindle; Wrench not included ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000KIEC88 | | Best Sellers Rank | #234,556 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #118 in Power Lathe Accessories | | Brand | PSI Woodworking | | Brand Name | PSI Woodworking | | Capacity | 1 Inches | | Compatible Devices | Drilling Machine, Grinding Lathe, Milling Machine | | Customer Reviews | 4.7 out of 5 stars 2,077 Reviews | | Global Trade Identification Number | 00689076537698 | | Handle Type | wrench | | Included Components | Spindle Adapter | | Item Diameter | 1 Inches | | Item Type Name | spindle adapter | | Lock Type | Set Screw | | Manufacturer | PSI Woodworking | | Manufacturer Part Number | L5818 | | Manufacturer Warranty Description | 2 Years Under Normal Use | | Material | Alloy Steel | | Material Type | Alloy Steel | | Model Number | L5818 | | Thread Size | 1 x 8tpi | | UPC | 689076537698 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** PSI Woodworking - **Material:** Alloy Steel - **Item Diameter:** 1 Inches - **Compatible Devices:** Drilling Machine, Grinding Lathe, Milling Machine - **Thread Size:** 1 x 8tpi ## Images ![PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi - Image 1](https://m.media-amazon.com/images/I/616VyE1pssL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good Quality, Great Price *by J***F on May 18, 2010* The above picture of this adapter doesn't do it justice. I was surprised at the quality. This item is a large, heavy weight, finely machined and polished spindle adapter. Both ends screws on smooth. It's top quality at a price that's cheaper than PSI (Penn State Industries), sales it for. And a lot cheaper than other adapters are sold for. View my photos for more detail. It turns true and on center. It doesn't have set screws to lock it to the spindle for reverse operation, but I can drill and tap a couple of holes for set screws if it becomes necessary. It has a solid core on the male threads so you can't use a vacuum chuck. On the female end there are two flat spots for a wrench if necessary. I use an 'Adjustable Slip & Lock - Plumbers Nut Wrench,' its cheap light weight and can accommodate the large size of the adapter (search Amazon # TW408302). The adapter does jamb tight against the chuck and/or spindle so the wrench might come in handy. The nut wrench is also sold at local home improvement centers. This adapter screwed nicely onto my lathe's spindle, right over the shoulder of the spindle to mate with the shoulder of the adapter, as if it was made specifically for my lathe. I did read a magazine Q & A article where someone said their adapter didn't screw on far enough to seat onto the shoulder of the spindle and was asking if he could use a stack of large washers to fill in the gap. The answer was - not a good idea to use washers from the hardware store due to variation in hole ID and thickness from one washer to another. It was suggested to use 'Anti-Lock Lathe Spindle Washers' to fill in any gaps (search Amazon, about $2). Maybe this might help others, but it was not an issue with my lathe. Specs: OD at female end: 2 1/16" Depth of female pocket: 1 1/2" Depth of shoulder inside female pocket: 1/4" Length of male threaded end: 1" Total length: 2 3/4" Wrench size to fit flats: 1 13/16" Weight: 1 lb. 4.8 oz. [See my photos for more detail.] ### ⭐⭐⭐⭐⭐ Good product *by K***N on August 25, 2025* Fits my lathe well. And fits in my chuck. Would recommend. Gets the job done! ### ⭐⭐⭐⭐⭐ good product that are good !!! *by C***S on January 17, 2026* well made ## Frequently Bought Together - PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi - VINWOX SCR4-4 Wood Lathe Chuck, 4-Jaw Self-Centering Chuck, with 1"x8TPI thread & 3/4"x16TPI Adapter - PSI Woodworking TM42 Headstock Mount Lathe Drill Chuck --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/12751024-psi-woodworking-l5818-lathe-headstock-spindle-adapter-5-8-shopsmith](https://www.desertcart.sn/products/12751024-psi-woodworking-l5818-lathe-headstock-spindle-adapter-5-8-shopsmith) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-07-06*