This 8 x 90mm Resin A2 Stainless Steel Internal Socket is an internally threaded stainless steel sleeve designed to be bonded into a drilled hole with chemical resin to create a secure M8 threaded anchor point. Its primary use is to provide a durable internal thread in concrete, brick or block where a standard through-fix is not practical, enabling the use of M8 bolts, studs or threaded rods after the resin cures.

Manufactured from A2 (AISI 304) stainless steel, the socket is supplied in a natural stainless finish and is an A2‑70 property class component, giving good tensile strength for common anchoring tasks. The internal thread is ISO metric coarse M8 x 1.25 (ISO 261 / BS 3643 / DIN 13 compatible), produced to standard metric thread form and tolerances suitable for mating with standard M8 fasteners. The product is intended for use with chemical anchoring systems and is compatible with the typical epoxy and polyester resins used in construction and civil engineering installations. There is no external drive or head – the socket is a plain internally threaded tube with a chamfered entry to aid insertion of the mating bolt and to improve resin flow on installation.

Typical applications include structural fixings in concrete and masonry, mechanical and electrical installations where a flush, removable connection is required, HVAC supports, and retrofit applications in refurbishment and fit‑out work. Industries that commonly use these sockets include building and construction, rail and infrastructure, M&E contracting and industrial maintenance. Because it is A2 stainless steel, the socket offers good corrosion resistance in general atmospheric environments and indoor applications; for prolonged exposure to marine or highly chlorinated environments, A4 stainless would be preferable.

Key benefits are the compatibility with standard M8 fasteners and chemical anchor systems, reliable internal metric thread produced to recognised standards, and the corrosion resistance and mechanical performance associated with A2‑304 material in property class A2‑70. Duchy Fasteners stocks the RCITS08SS internal socket in 8 x 90mm length with a selection of pack sizes from single pieces to trade bulk packs, and we can supply other diameters and lengths on request.