Excellent 4.7 out of 5.

M18 Self Tapping Insert - Stainless Steel (A2) M18 Self Tapping Insert - Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): HSTI-M18-A2

Images shown for graphic representation. Not to scale.

M18 Self Tapping Insert - Stainless Steel (A2) M18 Self Tapping Insert - Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): HSTI-M18-A2

Key Features

Certified Precision - Certificate of Conformity Supplied As Standard.
3 Year Extended Warranty.
Free Technical Support From Our Engineers.

Show All Sizes & Materials

3D CAD Model Downloads: Details .

Simple 90 Day Returns Details.

3 Year Warranty Details.

Official AccuScrews Product.

Buy More & Save

Show % Savings

/ Each Pack of
Exc. VAT
Price Exc. VAT

All prices below Exc. VAT

Minimum order quantity: Maximum order quantity:

This component is

Discontinued

Find Alternatives

This component is

Out of Stock

This component is

Available Offline

Manufactured For Your Order

It's prime for engineers.

Show All Sizes & Materials

M18 Self Tapping Insert - Stainless Steel (A2) Description

The M18 Self Tapping Insert - Stainless Steel (A2) has the following features:

Not Standardised Manufacturing Standard
24mm Length (L)
22mm External Diameter (OD)
Stainless Steel (A2) Material
Stainless Steel (A2) Material Specification
Natural Finish
Metric Metric or Imperial?
2.5mm Internal Pitch
Wood, Plastic & Non-Ferrous Metal (Requires Pilot Hole) For Use With
20.9mm - 21.4mm Recommended Bore Diameter
1.5mm External Pitch
M18 (18mm) Internal Thread Size (ID)

Discover more about the Self Tapping Inserts range.

Self Tapping Threaded Inserts are internally threaded components designed to create strong, reusable threads in softer host materials such as aluminium, wood, certain plastics and 3D printed materials. These inserts are capable of cutting their own threads during installation, removing the need for pre-threading or tapping.

Commonly referred to as Threaded Screw Inserts, Screw Thread Inserts or even Threaded Bushings, these components are particularly effective for repair work or in applications requiring frequent assembly and disassembly, such as jigs, fixtures, maintenance access panels and even robotics and hobby creations like miniatures. Creating reliable, durable threads for Machine Screws and other suitable fasteners.

Not what you need? Discover our full range of:
Threaded Inserts

Materials

To support varied application needs and environmental conditions, Our Self Tapping Inserts are available in the following material options:

Brass Threaded Inserts: Known for its machinability and corrosion resistance in suitable environments. Commonly used in furniture manufacture and cabinetry.
A2 Stainless Steel Threaded Inserts: Offers increased strength both on insertion and during fastener assembly, making it suitable for use in metal assemblies or where durability in harsher conditions is critical.

In addition to these material options Accu also offers premium coatings for our components, with PX-3 Chemical Blacking available with AccuBlack:
Discover AccuBlack

Sizes of Self Tapping Inserts Available

Our Self Tapping Inserts are available the following size ranges:

Internal Thread Sizes: M3 to M20
Outer Diameters: 5mm to 26mm
Insert Lengths: 10mm to 27mm

Each insert is available with detailed dimensional specifications to assist in selecting the optimal insert for the material and load conditions of your application.

FAQs

Q: How to install a screw thread insert?
A: Accu has a helpful guide on installing the most common insert solutions, Discover how to install Self Tapping Inserts here.

Q: How deep should threaded inserts go?
A: The pilot hole should be slightly deeper than the length of the insert to ensure full seating without bottoming out. For example, a 15mm insert typically requires a hole depth of approximately 16–17mm to allow for debris and tolerance.

Q: Bespoke Insert Solutions
A: Accu offers precision manufacturing services for custom Stainless steel threaded inserts for metal and other materials tailored to specific design and performance requirements. Whether you require prototyping in small batches or full-scale production.

Shipping Information

Shipping Destinations:

Worldwide view delivery information

Weight (100 items):

1.6kg

Component History

Product First Available:

Thursday, June 16, 2016

Stock Last Updated:

05:29 AMSunday, May 25, 2025

Specification Last Updated:

Sunday, May 25, 2025

Barcodes

APC (Accu Product Code):

HSTI-M18-A2

EAN13 (International Article No.):

5057196251087

ASIN (Amazon Stock Identification No.):

ASIN not defined.

3D CAD Model Downloads

It will be automatically recharged within 24 hours. If you would like more downloads or need help please contact us

See a problem with this CAD Model?

Sorry, this is not available online right now.

To request a CAD Model please provide the following:

Name

Thank you for requesting a 3D CAD Model.

We aim to get back to you within 2 working days.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Product Certifications.

Certificate of Conformity Included

RoHS Certified

REACH Certified

Not Certified For Use In Construction Projects

ISO9001
Quality Approved

Your Daily Download Limit Has Been Reached.

It will be automatically recharged within 24 hours. If you would like more downloads or need help please contact us.

Report A Product Specification Or CAD Error.

Internal Thread Size (ID)

Length (L)

External Diameter (OD)

Material

Finish

External Pitch

For Use With

Internal Pitch

Manufacturing Standard

Material Specification

Metric or Imperial?

Recommended Bore Diameter

CAD Error:

Is there anything else you'd like us to know?

Email Address (so we can let you know when it's fixed)

Get A Quote By Email. Quote Successful.

YOUR PRODUCT

M18 Self Tapping Insert - Stainless Steel (A2).

Minimum quantity required for a quote:

Thank you for requesting a quote.

We aim to get back to you within 2 working days.

Submit Another Quote.

1 How Many Do You Need?

Minimum quote quantity:

We have the quantity you need in stock. Add the product straight to your cart below. ( each)

2 Getting in Touch

Your Name

Company Name

Company Email Address

Company Phone Number

3 Tell Us More We'd love to hear your plans

Industry

Delivery Country

Other Details Max 500 characters.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Destination	Available Services
	Morning Express (Before Noon)	Saturday Express

Complete Your Project With These Recommendations.

Out Of Stock

Complete Your Project With These Recommendations.

Out Of Stock

M18 Self Tapping Insert - Stainless Steel (A2) M18 Self Tapping Insert - Stainless Steel (A2) (pack of 1)

M18 Self Tapping Insert - Stainless Steel (A2) M18 Self Tapping Insert - Stainless Steel (A2) (pack of 1)

Purchased