THROUGH-TAPPED SELF TAPPING INSERTS - Specialist Marine Fasteners

Through-tapped self-tapping inserts are shouldered, undercut and have metric internal threads. Identical to the blind self tapping inserts apart from being through tapped. The external thread will cut into wood, plastics, soft materials and composites such as fibreglass.
These inserts are manufactured in marine grade 316/ A4 stainless steel.

Please contact us if you require something slightly different, such as imperial threads.  

Through-Tapped Self-Tapping Inserts

Part #ITS004ITS001ITS005ITS002ITS003
Nominal Thread SizeM4M5M6M8M10
Length9mm10mm or 12mm12mm15mm20mm
IDM4 X 0.7M5 X 0.8M6 X 1.0M8 X 1.25M10 X 1.5
OD6.0mm8.0mm9.0mm12.0mm14.0mm
OD Thread-Type & Pitch30 degree flank self-tapping P=1.25mm30 degree flank self-tapping P=1.5mm30 degree flank self-tapping P=1.75mm30 degree flank self-tapping P=2.0mm30 degree flank self-tapping P=2.5mm
Cutting Relief3 x milled notch3 x milled notch3 x milled notch3 x milled notch3 x milled notch

We provide free delivery via Royal Mail (Second Class Tracked) 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 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.


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