---
product_id: 29646069
title: "Pro Series by HHIP 3900-5498 Cat40 Mazak Retention Knob, 18.8 Diameter x 41.1mm (M16) by Pro Series HHIP"
brand: "pro series hhip"
price: "$123.16"
currency: USD
in_stock: true
category: "Misc."
url: https://www.desertcart.us/products/29646069-pro-series-by-hhip-3900-5498-cat40-mazak-retention-knob
store_origin: US
region: United States of America
---

# Pro Series by HHIP 3900-5498 Cat40 Mazak Retention Knob, 18.8 Diameter x 41.1mm (M16) by Pro Series HHIP

**Brand:** pro series hhip
**Price:** $123.16
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Pro Series by HHIP 3900-5498 Cat40 Mazak Retention Knob, 18.8 Diameter x 41.1mm (M16) by Pro Series HHIP by pro series hhip
- **How much does it cost?** $123.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/29646069-pro-series-by-hhip-3900-5498-cat40-mazak-retention-knob)

## Best For

- pro series hhip enthusiasts

## Why This Product

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

## Description

18.8 Diameter X 41.1mm CAT40 Retention Knob for Mazak Machines!;M16 thread;Heat treated alloy steel hardened to HRC 52~56°;All dimensions in accordance to MAZAK machine specifications;L is 44.1. ~ L1 16.1. ~ L2 is 11. ~ D is 22. ~ d1 is 18.8. ~ d2 is 12.45. ~ d3 is 17. ~ d4 is 7

## Features

- Pro Series by HHIP 3900-5498 Cat40 Mazak Retention Knob, 18.8 Diameter x 41.1mm (M16)

## Images

![Pro Series by HHIP 3900-5498 Cat40 Mazak Retention Knob, 18.8 Diameter x 41.1mm (M16) by Pro Series HHIP - Image 1](http://ecx.images-amazon.com/images/I/31mzfIEXNwL.jpg)

---

## 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.us/products/29646069-pro-series-by-hhip-3900-5498-cat40-mazak-retention-knob](https://www.desertcart.us/products/29646069-pro-series-by-hhip-3900-5498-cat40-mazak-retention-knob)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-17*