---
product_id: 12751024
title: "PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8\" Shopsmith to 1\" x 8tpi"
brand: "psi woodworking"
price: "VT11510"
currency: VUV
in_stock: true
reviews_count: 8
url: https://www.desertcart.vu/products/12751024-psi-woodworking-l5818-lathe-headstock-spindle-adapter-5-8-shopsmith
store_origin: VU
region: Vanuatu
---

# Extends spindle length by 1.25 inches Secure set screw lock for stability Steel construction for durability PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi

**Brand:** psi woodworking
**Price:** VT11510
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your lathe game — don’t get left behind!

## 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?** VT11510 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/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

- • **Rugged Steel Build:** Engineered from solid steel to withstand heavy use and ensure long-lasting performance.
- • **Wrench-Ready Flats:** Designed with flats for a firm wrench grip, making installation and removal quick and hassle-free.
- • **Extended Reach Advantage:** Adds 1-1/4" spindle length, giving you extra clearance and flexibility for larger projects.
- • **Secure Locking Mechanism:** Set screw lock guarantees a rock-solid fit, eliminating wobble and enhancing safety.
- • **Precision Thread Conversion:** Effortlessly upgrade your Shopsmith 5/8" spindle to 1" x 8tpi threading for versatile tool compatibility.

## Overview

The L5818 Lathe Headstock Spindle Adapter converts a Shopsmith 5/8" non-threaded spindle to a 1" x 8tpi threaded interface, enabling compatibility with a wider range of woodturning chucks and accessories. Crafted from durable steel, it extends spindle length by 1.25 inches and features a secure set screw lock and wrench flats for easy installation. Ideal for professionals seeking precision and versatility in their woodworking setup.

## Description

PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi

## 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 |
|---------------|-------|
| Capacity | 1 Inches |
| Handle Type | wrench |
| Included Components | Spindle Adapter |
| Lock Type | Set Screw |
| Global Trade Identification Number | 00689076537698 |
| Manufacturer | PSI Woodworking |
| UPC | 689076537698 |
| Part Number | L5818 |
| Item Weight | 9.9 ounces |
| Product Dimensions | 4.5 x 2.5 x 2.5 inches |
| Country of Origin | China |
| Item model number | L5818 |
| Size | Shopsmith 5/8" to 1" x 8tpi |
| Style | Headstock Spindle Adapter |
| Item Package Quantity | 1 |
| Cutting Diameter | 1 Inches |
| Batteries Required? | No |
| Warranty Description | 2 Years Under Normal Use |

## 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 Name** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5/8” adaptor
*by M***R on April 2, 2025*

Quality product!

### ⭐⭐⭐⭐⭐ 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.]

### ⭐⭐⭐⭐⭐ Fire Central Machinery
*by D***I on February 23, 2025*

Fits older model Central Machinery benchtop lathe.

## 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

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-02-26*