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Specifying TurnaSure DTI's

Specifying for use on structural steel projects

For ASTM A325 or A490 Bolts "All ASTM A325 or A490 High Strength Bolts shall be tightened and inspected using Direct Tension Indicators to ASTM F959 and also manufactured to the TurnaSure® washer design".

For ASTM A325M or ASTM A490M Metric Bolts "All ASTM A325M or A490M High Strength Bolts shall be tightened and inspected using Direct Tension Indicators to ASTM F959M and also manufactured to the TurnaSure® washer design".

For EN 14399-3 or prEN 14399-7(System HR) and EN 14399-4 or prEN 14399-8 (System HV) Bolts and Nuts "All EN or prEN standard High Strength Friction Grip Bolts and Nuts shall be tightened and inspected using Direct Tension Indicators to prEN 14399-9 (soon to be published) and also manufactured to the TurnaSure® washer design".

For other High Strength Bolt Standards (such as DIN 6914, and JISB 1186 F10T) "All (State Applicable Standards) High Strength Friction Grip Bolts shall be tightened and inspected using Direct Tension Indicators meeting ASTM F959M dimensions and tested to ASTM F606 standard and referenced sampling plan in ASTM F1470 and meeting the required minimum bolt preloads for this applicable Bolt Standard at .4mm indicator test gaps and also manufactured to the TurnaSure® washer design".

Specifying for SAE J 429 Cap screws

For SAE Grade 5 or Grade 8 Bolts "All SAE Grade 5 and Grade 8 bolts shall be tightened and inspected using Direct Tension Indicators to ASTM F2437-06 and also manufactured to the TurnaSure® washer design".

For Metric SAE Grade 8.8 or Grade 10.9 Bolts "All SAE Grade 8.8 and Grade 10.9 bolts shall be tightened and inspected using Direct Tension Indicators. Direct Tension Indicators shall be tested and certified per ASTM F606 testing and certification protocol at test gap of .25mm tested to an average load of 75% of Proof Load of the applicable bolts and sampled per ASTM F1470 sampling plan for Direct Tension Indicators and also manufactured to the TurnaSure® washer design".

Specifying for ASTM Anchor Bolts or Studs

For ASTM F 1554 Grade 55 Anchor Bolts (or ASTM A307 Bolts and Nuts) "All ASTM F 1554 anchor bolts (or ASTM A307 Bolts and Nuts) shall be tightened and inspected using Direct Tension Indicators to ASTM F2437-06 (Grade 55) and also manufactured to the TurnaSure® washer design".

For ASTM A 193 Grade 105 B7 or B16 Studs (or ASTM F 1554 Grade 105 Anchor Bolts) "All ASTM A 193 studs (or ASTM F 1554 Grade 105 Anchor Bolts) shall be tightened and inspected using Direct Tension Indicators to ASTM F2437-06 (Grade 105) and also manufactured to the TurnaSure® washer design".

Specifying for customer's own proprietary specification

"All bolts and nuts shall be tightened and inspected using Direct Tension Indicators to our own approved drawing #... and compression load requirements and also manufactured to the TurnaSure® washer design. Direct Tension Indicators shall be tested and certified per ASTM F606 testing and certification protocol at test gap specified in our applicable drawing and sampled per ASTM F1470 sampling plan for Direct Tension Indicators".

Find out how TurnaSure DTIs and our bolting technology can bring structural stability and savings to your next project. Contact our experts online or by calling 1-800-525-7193.
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