BLIND SELF-TAPPING THREADED INSERTS - Specialist Marine Fasteners

Our Blind Self Tapping Inserts come with a range of internal threads, and a self-cutting external thread.

The external thread is unique to our inserts, and designed to work similarly to the well-proven forms of self-tapping screws. The coarse thread of this type of insert is designed to give more strength, particularly when used on composites and softer materials such as wood, fibreglass or plastics.

Some sizes are now available with a screwdriver slot.

We would recommend blind self-tapping inserts for use in applications where fluid ingression along the internal thread could be an issue. The insert has a 45 degree shoulder with an undercut which provides an area where a sealant or bonding agent can be applied to help keep a watertight seal.

When it comes to fasteners for marine applications, you need something that stands up to the harshest conditions. Our Marine-Grade Stainless Steel A4 Blind Self-Tapping Threaded Inserts are engineered to meet and exceed those demands.

Key Features:

🛠️ Corrosion Resistance: Crafted from marine-grade stainless steel A4, these threaded inserts are specifically designed to resist corrosion, even in saltwater environments. They're your first line of defence against rust and deterioration.

🛠️ Self-Tapping Design: Enjoy hassle-free installation with the self-tapping design. No need for pre-drilled holes; these inserts create their threads as they're installed, saving you time and effort.

🛠️ Blind Installation: Perfect for applications where access is limited to one side of the workpiece, these blind threaded inserts provide you with versatility and convenience.

🛠️ Wide Range of Uses: Whether you're repairing boat fixtures, constructing marine equipment, or tackling any project in a corrosive environment, these inserts are the ideal solution.

🛠️ Various Sizes Available: Choose from our selection of sizes to match your specific needs, allowing you to achieve the perfect fit for your project. See the sizing chart below

Upgrade your marine projects with these Marine-Grade Stainless Steel A4 Blind Self-Tapping Threaded Inserts. Their quality and performance are unmatched in the harshest of environments.

Invest in the durability and reliability that marine-grade stainless steel A4 provides. Order your pack today and experience the difference for yourself. Should you have any questions or require further assistance, our team is here to support your fastening needs.

Specifications:

Material: Marine Grade Stainless Steel 316
Package Includes: 5 Pieces
Country of Origin: UK
Brand: Specialist Marine Fasteners
Condition: Brand New
Available Sizes: -See chart below

We can manufacture inserts to specific sizes or different thread combinations, such as imperial or fine-pitch threads. Give us a call if you need something we don't have listed.

Blind Self-Tapping Inserts Size Range

Material	Inside Thread	Length	ID	OD	OD Thread Type & Pitch	Cutting Relief
Stainless Steel 316	M2	7mm	M2 x 0.4mm	4.0mm	60 degree flank self tapping P=1.00mm	3 x milled
Stainless Steel 316	M3	7mm	M3 x 0.5mm	5.0mm	60 degree flank self tapping P=1.25mm	3 x milled
Stainless Steel 316	M4	9mm	M4 x 0.7mm	6.0mm	60 degree flank self tapping P=1.25mm	3 x milled
Stainless Steel 316	M5	10mm	M5 x 0.8mm	8.0mm	60 degree flank self tapping P=1.5mm	3 x milled
Stainless Steel 316	M6	12mm	M6 x 1.0mm	9.0mm	60 degree flank self tapping P=1.75mm	3 x milled
Stainless Steel 316	M6	30mm	M6 Heavy Duty	18.0mm	60 degree flank self tapping P=3.0mm	3 x milled notch
Stainless Steel 316	M8	15mm	M8 x 1.25mm	12.0mm	60 degree flank self tapping P=2.0mm	3 x milled
Stainless Steel 316	M8	30mm	M8 Heavy Duty	20.0mm	60 degree flank self tapping P=3.0mm	3 x milled
Stainless Steel 316	M10	20mm	M10 x 1.5mm	14.0mm	60 degree flank self tapping P=2.5mm	3 x milled
Stainless Steel 316	M10	30mm	M10 Heavy Duty	20.0mm	60 degree flank self tapping P=3.0mm	3 x milled
Stainless Steel 316	M12	25mm	M12 x 1.75mm	16.0mm	60 degree flank self tapping P=2.75mm	3 x milled
Stainless Steel 316	M16	35mm	M16 x 2.0mm	25.0mm	60 degree flank self tapping P=3.50mm	3 x milled
Stainless Steel 316	M20	40mm	M20 x 2.5mm	30.0mm	60 degree flank self tapping P=3.50mm	3 x milled

Can't see what you are looking for? Message us for details of our specialist manufacturing service.

We provide free delivery via Royal Mail (First Class) for UK orders. We endeavour to dispatch within 1 working day of receipt of payment. Tracked shipping options are available, additional charges apply. For overseas orders, we use eBay's Global Shipping Programme and the costs of shipping to your destination are determined by eBay using a tracked service for your peace of mind. Returns are accepted within 30 days. Postage costs for returns will not be refunded unless the items are deemed to be faulty.

Thanks for trusting Specialist Marine Fasteners with your order – customer service is very important to us, and we welcome your feedback. In the unlikely event of an issue with your order please contact us via eBay messages and we will respond quickly with a resolution.

Our insert range is constantly evolving so occasionally there may be slight changes to the designs.

Please note: To help the environment and save paper, we do not include a printed VAT receipt. Should you require one, please ask at the time of ordering and we will email a copy to you. Thank you.