Content with bolt extenders

15 June 2018
Internal thread diameter* d Pitch of thread P External diameter, shank diameter D Nominal length m (ref.) Minimum tensile strength** kN M16 2 M24 100 130 M20 2.5 M30 100 203 M22 2.5 M33 100 252 M24 3 M36 100 293 M27 3 M39 100 381 M30 3.5 M42 100, 120 466 M33 3.5 M45 100, 120 576 M36 4 M48 100, 120 or 150 678 Dimensions in millimetres *) Internal thread to suite self-colour bolts (6H), studs or square-square bolts (sqsq bolts).
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21 August 2015
Please find below documents as a part of our Technical Support section. If case of any further questions, please visit our Frequently Asked Questions (FAQ) section or contact with Andrews Fasteners Quality Department . BS EN 15048 Non-preloaded structural bolting assemblies (SB) Torque values prepared by W. Christie Guidance On The Tightening of Non-preloaded Fasteners Guide to Design Criteria for Bolted and Riveted Joints, Second Edition BS EN 14399 High-strength structural bolting assemblies for preloading (HR) The different appearance of lubricated nuts on EN 14399 assemblies Configurator for BS EN 14399 High-strength structural bolting assemblies for preloading (HR) Torque values for High-Strength Structural Bolting Assemblies for Preloading with specified k-Class Bolt Length Calculator for HR Bolts and HR Countersunk Bolts (EN 14399-3/7) Thread Length Calculator for Countersunk High-Strength Structural Bolts to BS EN 14399-7 (HR CSK) Thread Length Calculator for Hexagon High-Strength Structural Bolts to BS EN 14399-3 (HR) Comparison of Tightening Methods of HSFG Bolts Detailed comparison of BS 4395 and BS EN 14399-3 & 6 Summary comparison of BS 4395 and BS EN 14399-3 & 6 Grip, Bolt Lengths and Hole Dimensions Guidance notes on the use of Preload Bolt Assemblies BS EN 14399 (HSFG) comparison as an alternative to ASTM HSFG See also: Preloaded assemblies k-Class K1 and K2 manufactured in the UK (from News ) BS EN 14399-9 Direct Tension Indicators Washers Instruction Manual for installing Preloaded (HSFG) bolting with TurnaSure Direct Tension Indicators Washers EN 14399-9 New Generation Direct Tension Indicators Squirter Type DTI performance results Preload Measurement and Comparison of Structural Bolts sets installed in Steel Connections with and without DTI Tests for stress relaxation over time 1963 to 1971 with CLI Fatigue tests on CLI CLI Washers-load gap relationship on unloading and loading DTI Case History - DTIs Save More than $150,000 Study discussing influence of load-indicating washers on bolt relaxation in joints subject to high prying forces Study on full flattening of Direct Tension Indicators in Shear Connections Study on curved protrusion DTIs design assembled without needing nut face or bolt face washers Impact of Variable Lubricity on Type 325 Structural DTIs Test Report for Accelerated Aging of Weathering Steel Joint using TurnaSure Weathering Steel Transverse Vibration Loosening Characteristics of High Strength Fastened Joints using DTIs Coating Trivalent passivation systems (Fasteners+Fixings Magaizne) The HDG (Hot Dip Galvanising) Coating (Source: galvanizeit.
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25 August 2014
Typical products offered from this group Product description Specification Square Square Bolts (SQ SQ), Holding Down Bolts , Foundation Bolts, SQ SQ Bolt Assemblies (complete with Nut, Plate and Wax Cone) BS 7419 Square Plate Washer (Square plate with square hole to fit SQ SQ Bolt under the head) to suit BS 7419 bolt Wax Cardboard Cones to suit BS 7419 bolt Bolt extenders , Universal Bolt Connectors (UBC), Universal Nut Connectors (UNC), Wedges to suit BS 7419 bolt Finishes available Finish Specification S/C
Read more about SQ SQ bolts, Plates, Wax cones, Bolt extenders, Wedges

25 August 2014
Construction fasteners products manufactured, supplied and distributed by Andrews Fasteners. As a fasteners specialist Andrews Fasteners can offer various fasteners and fixings starting from most popular up to more complicated and custom made requirements as per drawings. Our products range: BS EN 15048 Non-preloaded structural bolting assemblies (CE & UKCA Marked) Structural bolting (SB) assemblies, hexagon set screws (fully threaded), bolts (part-threaded), hexagon nuts, plain washers available in Self-Colour, Zinc Plated, Galvanised, Sherardized and other finishes.
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