Spida Fixings, developed in the UK by engineering and design company Adhesion Technologies Ltd. (ATL) to provide manufacturers with innovative, new technology fastening solutions, are now available to buy direct on line. Launched last year, Spida Fixings have been tested and proven to offer designers of concrete, metal, timber, glass fibre and carbon fibre composite components up to 54% more adhesion performance in use for less weight, with increased mechanical performance capabilities and stress limits, usually with smaller and fewer fastenings being required, so also saving cost.
All Spida fastener components are precision engineered from either heat treated high-tensile carbon steel (20MnB4/CR4) or marine grade stainless steel, with optional surface finishes available depending on the application. The complete Spida fixing system works with a variety of adhesives, over moulding and welding fixing techniques. For engineers, the patented design and technology in a Spida Fixing eliminates the need for drilling holes for bolts and rivets which can compromise the structural integrity unless a thicker material is specified to obtain the desired fixture performance, which then increases both weight and cost. This newly developed, cost effective, lightweight fixing system is suitable not only for new product designs but can also be retrofitted as part of a repair, maintenance or overhaul of composite, plastic and metal structural components.
New Website Features
The new E-commerce website, www.spidafixings.com, has been set up to be fast and easy for OEMs and tier 1 or 2 industrial purchasers, B2B or B2C trade stockists, and individual consumer buyers located anywhere in the world to order and pay on line in one simple transaction. To make it quick and easy to follow, the new website includes a ‘How to place an order’ guide and a ‘Buy’ page with a clear, step by step ‘product builder’ order selection process to help on line purchasers choose the right size and type of Spida Fixing stud, standoff, base plate and finish options required for an application. ATL offers its customers over 50,000 Spida product combinations, with a choice of fixing sizes and metal material options, as well as passivation, heat treatment, plating and surface finishes which can be specified as needed.
From the homepage, site visitors can click through to read about the features and benefits of Spida Fixings, see answers to ‘Frequently Asked Questions (FAQ), and learn about the unique Spida Fixings patented technology, including the optional proprietary AdMaxTM surface treatment that significantly improves bond strength and overall adhesion performance by increasing surface area, surface energy and wicking properties.
To make it simpler and more convenient to buy on-line, UK Sterling prices per item for the fixing size an specification being ordered are clearly shown, and there is a discount table with a sliding scale depending on order value, along with shipping costs. If customers prefer, they can also order by phone. Very large industrial customers are taken care of individually by the ATL sales team, which will set up an on line trading account to efficiently handle and monitor all order and delivery requirements. All Spida Fixing options are ‘made to order’, typically being assembled, packed and delivered from ATL’s UK factory to anywhere in Europe within 10-12 working days, and the rest of the world in 12-15 working days; lead times and delivery will vary depending on the order size and stock availability.
Current Spida Range
The range of Spida Fixings currently available can be ordered in mild or stainless steel. Spida studs are available in five standard diameters: M4, M6, M8 M10 and M12, with stud lengths ranging from 20mm to 60mm, along with corresponding threaded ‘blind’ or ‘through’ standoffs up to M12. All threads are metric with coarse pitches, measured at the major diameter as per ISO 261. Concave, castellated Spida bases are available in five size options from 11mm up to 53mm. All Spida studs, threaded standoffs and bases can be used separately, or as a complete fastening which can be fibre and resin encapsulated or bonded to a substrate. Later this year, ATL will also offer a 35mm or 53mm flat base option, which can be a more optimal fixing design in certain applications.
Spida Fixing Technology Explained
This new technology fastening system is the outcome of more than five years of research and development (R&D). It has been specifically developed to offer manufacturing companies a fast, cost effective alternative for the modular assembly of fibre reinforced composites, metal and engineering plastic parts used in demanding automotive, aerospace, defence, marine, transportation, building and infrastructure applications.
Spida Fixings use a proprietary design and adhesion technology which creates a much higher strength bond with a wide range of substrates. Spida bases have a number of key design features incorporated to improve adhesive performance. These include castellated anti-torsion edges which enable the adhesive to form lugs, plus a concave shaped inner section of the base which provides a ‘micro chamber’ in which an adhesive’s long chain molecule structure can orientate from 0 to 180 degrees during curing. The overall result is a significantly stronger, lighter, higher performance method of mechanically joining metal, composite and engineering plastic components with enhanced peel, shear, torsion, cleavage, tension and compressive loading capabilities. Based on validated test data, the Spida fixing system has been proven to provide up to 54% more adhesion performance, with the castellated edge design providing 24% greater torsional resistance strength than circular fixings. All Spida fastening metal components are sourced from major US and European approved suppliers, which file independent PPAP (Production Part Approval Process) metal fixing test reports for each key fixing component in compliance with the AIAG (Automotive Industry Action Group) standards, globally recognized by OEMs and tier 1 and 2 providers in the automotive supply chain.
According to ATL, Spida Fixings can achieve weight and cost savings by spreading stress across a larger part of the substrate, enabling designers to specify a smaller diameter of fixing, with no loss of performance in use. Colin Wood, Managing Director of ATL and originator of the Spida Fixings technology commented on the enhanced performance capabilities of the fastening system for assembled, load bearing composite parts: “Different from other fixing system currently available, Spida fixing technology actively redistributes cluster stress loads in the substrate to which it is fixed, so significantly reducing stress levels in the immediate fixing area, whilst also providing a very lightweight, tough and strong fastening solution”, adding: “To my knowledge, this is the first time a composites specialist engineer, rather than a more traditional metalbased mechanical engineer, has designed this type of fixing specifically for the composites sector.”
Grant Funded NPD Projects
ATL is currently working on a number of joint new product development (NPD) projects specifically aimed at ‘next generation’ aerospace, marine and automotive fastening designs with international materials suppliers including Tappex, Pressavon, Henkel and Huntsman, as well as design engineers from key OEM partners Jaguar Land Rover, Leonardo-Finmeccanica SpA. (AgustaWestland), and GKN Aerospace. Later this year, innovative new Spida fixing products offering enhanced productivity and fastening performance for both glass and carbon fibre reinforced composite moulded parts will be added to the range.
Companies: Spida Fixings