---
product_id: 477461493
title: "6061 Aluminum Bottle Jack Valve Knob for Harbor Freight Press | 3/8\" Screw-On Release Handle | Easy Install Durable Upgrade for Hydraulic Press & Engine Hoist"
brand: "generic"
price: "€ 27.92"
currency: EUR
in_stock: true
category: "Generic"
url: https://www.desertcart.sk/products/477461493-6061-aluminum-bottle-jack-valve-knob-for-harbor-freight-press
store_origin: SK
region: Slovakia
---

# Extended knurled grip Secure 1/4 turn screw-on install 6061 aircraft-grade aluminum 6061 Aluminum Bottle Jack Valve Knob for Harbor Freight Press | 3/8" Screw-On Release Handle | Easy Install Durable Upgrade for Hydraulic Press & Engine Hoist

**Brand:** generic
**Price:** € 27.92
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate your press game with precision and grip that won’t quit!

## Quick Answers

- **What is this?** 6061 Aluminum Bottle Jack Valve Knob for Harbor Freight Press | 3/8" Screw-On Release Handle | Easy Install Durable Upgrade for Hydraulic Press & Engine Hoist by generic
- **How much does it cost?** € 27.92 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/477461493-6061-aluminum-bottle-jack-valve-knob-for-harbor-freight-press)

## Best For

- generic enthusiasts

## Why This Product

- Trusted generic brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Crafted from premium 6061 aircraft-grade aluminum for unmatched strength and durability.
- • **Precision Fit:** Tailored for Harbor Freight hydraulic bottle jacks and compatible with 3/8" or 7/16" valve release screws.
- • **Grip Like a Pro:** Longer knurled section ensures a confident, slip-free hold even in the toughest workshop conditions.
- • **Upgrade Your Workflow:** Transform your hydraulic press experience with a durable, easy-to-use valve knob designed for pros.
- • **Effortless Installation:** Quick 1/4 turn screw-on design with included set screw for a secure, no-fuss upgrade.

## Overview

This 6061 aluminum valve knob is a precision-machined, durable upgrade designed specifically for Harbor Freight hydraulic bottle jacks and similar models. Featuring an extended knurled grip and a secure 1/4 turn screw-on installation, it enhances control and reliability during hydraulic press operations. Ideal for professional-grade use, it fits 3/8" and 7/16" valve release screws and is engineered exclusively for press applications—not vehicle lifting.

## Description

**Premium 6061 Aircraft Aluminum Valve Knob** Upgrade your workshop efficiency with this heavy-duty CNC-machined release handle, crafted from solid 6061-T6 aluminum for unmatched durability. Designed as a direct replacement for the Harbor Freight 20-ton hydraulic press and compatible with most 3/8" & 7/16" valve stems, this knob eliminates the need for bulky lever handles – control pressure release with a simple finger twist. --- #### **Why This Knob is a Must-Have** ✅ **Instant One-Hand Operation** Replace awkward crossbar levers with effortless 1/4-turn hand tightening. Perfect for frequent press users who value speed and precision. ✅ **Military-Grade Construction** Rigid 6061 aluminum withstands 10,000+ PSI hydraulic pressure. Knurled grip ensures slip-free control even with oily hands. ✅ **Zero-Play Secure Fit** Dual-locking system: Slide onto valve stem → Quarter-turn lock → Set screw fixation (included). No wobble, no stripped threads. ✅ **Universal Compatibility** Fits Harbor Freight 6/12/20-ton presses, engine hoists, and any bottle jack with 3/8” or 7/16” release screws. --- #### **Technical Specifications** - **Material:** 6061-T6 Aluminum (Aircraft Grade) - **Finish:** Anodized Anti-Corrosion Coating - **Sizes:** 3/8" & 7/16" Valve Stem Options - **Installation:** 5/32" Hex Key Required (Not Included) - **Safety Rating:** 20,000+ Cycle Fatigue Tested --- #### **Real User Benefits** _"No more hunting for the jack handle mid-project!"_ - 30-second tool-free install – Keep workflow uninterrupted - Ergonomic 2.5" diameter knob reduces hand fatigue - Deep side grooves accept DIY torque pins (see customer images) --- ⚠️ **Critical Safety Notice** **DO NOT USE FOR VEHICLE LIFTING!** This product is engineered exclusively for **HYDRAULIC PRESS APPLICATIONS** (metal forming, bearing removal, etc.). Using it on automotive jacks violates safety standards. --- ### **Package Includes** - 1x 6061 Aluminum Release Knob - 1x Stainless Steel Set Screw - Step-by-Step Installation Guide

## Features

- * **Material:** Precision machined from a solid bar of 6061 aircraft-grade aluminum for strength and durability.
- * **Enhanced Grip:** Features a longer knurled section for extra grip, ensuring ease of use even in tough conditions.
- * **Secure Attachment:** Slides over the release screw, turns 1/4 turn, and is secured with a set screw (included) from the end of the knob. A 5/32" hex key (Allen wrench) is required for installation
- * **Compatibility:** Specifically designed for Harbor Freight Hydraulic Bottle Jacks used in 6, 12, and 20-ton arbor presses. It also fits any bottle jack with a 3/8" or 7/16" diameter valve release screw.
- **Important Note:** * **DO NOT USE WHEN LIFTING VEHICLES** – This knob is intended **ONLY** for hydraulic press applications.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BBR9NWGS |
| Best Sellers Rank | #40,610 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #81 in Jack Accessories |
| Brand | Generic |
| Brand Name | Generic |
| Color | Silver |
| Compatible with Vehicle Type | Car |
| Customer Reviews | 4.8 out of 5 stars 251 Reviews |
| Included Components | Comes with housing |
| Item Dimensions | 1.53 x 1.53 x 1.39 inches |
| Item Type Name | Knob |
| Item Weight | 0.09 kg |
| Load Capacity | 20 tons |
| Manufacturer | 3/8" 7/16" Knob |
| Manufacturer Part Number | 3/8" 7/16" Knob |
| Manufacturer Warranty Description | 90 |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | 3/8" 7/16" Knob |
| Number of Items | 1 |
| Style Name | Bottle Jack |
| UPC | 795063545093 |
| Vehicle Service Type | Car |

## Product Details

- **Load Capacity:** 20 tons
- **Brand:** Generic
- **Color:** Silver
- **Item dimensions L x W x H:** 1.53 x 1.53 x 1.39 inches
- **Manufacturer:** 3/8" 7/16" Knob

## Images

![6061 Aluminum Bottle Jack Valve Knob for Harbor Freight Press | 3/8" Screw-On Release Handle | Easy Install Durable Upgrade for Hydraulic Press & Engine Hoist - Image 1](https://m.media-amazon.com/images/I/61LvKuA+aFL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Will this fit the vevor 6 ton press**
A: It should as long as it isn't the pinned style release valve on the jack. May want to measure the release valve first so you get the correct size. I guessed on mine and it was too small (not much but enough something would have to be modified) returned and ordered the larger size (for my press HF 20ton) and it fit perfect. 

Very well machined and makes the press easier to use.

**Q: Will it work on the harbor freight 2 ton shop crane ( engine hoist ) .?**
A: Yes it will, just buy the smaller sized screw hole.

**Q: Will this work on the HF 8 Ton Bottle / Press?**
A: Should fit, they all seem the same release valve.

**Q: What is the diameter of the knurled section on the 3/8" model ?**
A: 1-1/2”

## Frequently Bought Together

- Knob for Bottle Jack Valve Release Screw On Harbor Freight Hydraulic Press Made of 6061 Aluminum (3/8")
- Performance Tool W41065 6-Piece Shop Press Accessory Kit for Presses Up to 50-ton
- 12" Press Brake Attachment/Press Brake Attachment For Standard 12/20 Ton Hydraulic Shop Presses

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-10-28*