Product Description
CMT 991.055.00 0.9mm Hex Key by CMT is a precision replacement hex key designed specifically for use with M3 screws, making it an essential maintenance tool for woodworkers and shop professionals who rely on CMT router bits, cutter heads, and related accessories. The 0.9mm hex drive size is engineered to provide a precise, slip-free fit, so you can tighten or replace insert screws with confidence and without damaging the fastener or tooling.
Key Features
- 0.9mm hex drive size - matches the exact drive requirement for M3 insert screws, ensuring a secure fit and preventing cam-out or fastener damage during adjustments.
- Designed for use with CMT screw model 990.060.00 - takes the guesswork out of finding the right wrench size, giving you a purpose-matched tool that works correctly the first time.
- Replacement hex key sold individually - lets you replace only what you need without purchasing a full set, keeping your toolkit complete and your operation running smoothly.
Why This Product
- If you have lost or damaged the original hex key that came with your CMT tooling, this 0.9mm replacement restores full functionality without requiring you to source a generic alternative that may not fit properly.
- The 0.9mm drive specification is a non-standard size that is precisely matched to M3 insert screws used in CMT router bit and cutter head assemblies - having the correct key prevents stripped sockets and keeps your tooling in serviceable condition.
- Sold individually, this hex key is a low-cost way to maintain your CMT accessories and avoid downtime caused by a missing or damaged wrench during bit changes or cutter head adjustments.
- As a CMT genuine replacement part, it pairs directly with CMT screw 990.060.00, making it the straightforward choice for shops already working with CMT router bits and insert tooling.
Specifications
- Brand: CMT Orange Tools
- Order Number: 991.055.00
- Diameter: 0.9mm
- Type: Hex Key
- Compatible Screw: CMT 990.060.00 (M3)
Frequently Asked Questions
What screw is this hex key designed to fit?
This hex key is specifically designed for use with CMT screw model 990.060.00, which is an M3 insert screw used in CMT router bits and cutter head accessories. The 0.9mm hex drive is matched precisely to that fastener.
What does the 0.9mm size refer to?
The 0.9mm measurement refers to the hex key drive size - the width across flats of the hex tip that engages the socket of the M3 screw. This is a non-standard size, so using the CMT-specified key (991.055.00) ensures a proper fit without risk of slipping or stripping the fastener.
How many hex keys come in this order?
This item is sold individually as a single 0.9mm hex key. It is a replacement accessory intended to keep your CMT tooling fully operational when the original key has been lost or worn.
Can this hex key be used with non-CMT screws of the same drive size?
The source data specifies this hex key for use with CMT screw 990.060.00. No compatibility information is provided for non-CMT fasteners, so it is recommended to use this tool with the CMT screw it is designed for to ensure safe and proper operation.
Reviews
FAQs
Standard Shipping is free on most orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.