The "hot" aspect is critical here; these fasteners are designed for service temperatures typically ranging from -50 °C to +100 °C , with special applications reaching up to 150 °C .
The is a crucial regulatory document that outlines the technical delivery conditions and functional properties for adhesive-coated steel screws, bolts, and studs . Specifically focusing on microencapsulated (MK) adhesive pre-coatings, the standard ensures that threaded fasteners maintain their clamping force under intense operational stress.
The standard defines requirements to ensure the adhesive remains effective for a specified period, typically under controlled storage conditions (temperature and humidity). din 26727 pdf hot
According to the latest DIN 267-27 specifications published by DIN Media , the document sets specific guidelines for:
Depending on the chosen chemical compound class, typical adhesive pre-coatings are engineered to withstand temperatures ranging from (and occasionally up to +200∘Cpositive 200 raised to the composed with power C The "hot" aspect is critical here; these fasteners
Sourcing fasteners to meet this standard requires calculating specific torque values to ensure consistent clamp load. The standard relies on key operational values to determine whether an adhesive coating functions as intended. Critical Torque Terms Screw-in Torque ( Mincap M sub i n end-sub
DIN 267-27 specifies the functional properties, testing methods, and delivery conditions for steel fasteners (screws, bolts, and studs) that are pre-coated with microencapsulated adhesive. This standard ensures that the pre-applied coating provides a reliable, high-strength locking effect upon installation. Key Aspects of the Standard (DIN 267-27:2024-07) The standard defines requirements to ensure the adhesive
Covers fasteners manufactured according to property classes specified in DIN EN ISO 898-1 , DIN EN ISO 3506-1 (stainless steel), and DIN 267-13 .
Test specimens are fully assembled, cured at room temperature, and subsequently heated in environmental chambers to their maximum target temperature.
The standard dictates the exact location and length of the pre-applied adhesive coating on the fastener. Unless otherwise specified, the coating must begin a set distance from the screw's end and cover a defined length. The 2024 revision added clearer tolerances for screws requiring special coating lengths and positions, using new diagrams for illustration.