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.
Preloaded / Non-preloaded fasteners
- Bolt Length Calculator for HR Bolts and HR Countersunk Bolts (EN 14399-3/7)
- Thread Length Calculator for HR Bolts to EN 14399-3
- Thread Length Calculator for HR Countersunk Bolts to EN 14399-7
- Torque values for preload bolt assemblies with specified k-Class
- Technical Wall Chart for preload and non-preload fasteners
- Torque values prepared by W. Christie
- Guidance On The Tightening of Non Pre-load Fasteners
- 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
- Guide to Design Criteria for Bolted and Riveted Joints, Second Edition
See also:
Direct Tension Indicators (DTI) Washer
- Instruction Manual for installing Preloaded (HSFG) bolting with TurnaSure Direct Tension Indicators Washers EN 14399-9
- Nut And Bolt Face Washers Are Not Required With Turnasure DTIs (grade 8.8 assemblies only)
- 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