"This SAE Aerospace Standard (AS) establishes the requirements for a V-band grooved clamp couplings that are intended for use on fluid-line tubing joints@ tailpipe joints@ and accessory mount joints@ on flight vehicles or other attachments. The semi-rigid coupling joint assemblies@ hereafter referred to as ""the joint""@ shall operate within the temperature range of ?65 to +1200 ?? Types: The coupling shall be classified as single or double latch couplings: Single Latch Couplings: Type B - Basic T-bolt (Bolt) Type R - Quick release (Release) Type BL - Basic T-bolt with secondary safety latch (Bolt-Latch) Type RL - Quick release with secondary safety latch (Release-Latch) Double Latch Coupling (?21 minimum size): Type BR - Basic T-bolt and quick release (Bolt-Release) Type BRL - Basic T-bolt and quick release with secondary safety latches (Bolt-Release-Latch)"