MIL-DTL-8783D
3.3.3 Tongue. The tongue shall be the same width, thickness, and material as the clamp band
specified in 3.3.2.
3.3.4 Trunnion assembly. Trunnion assembly consisting of the body and cap shall be corrosion-
resistant steel alloy 301 in accordance with SAE-AMS5902, alloy 302 in accordance with SAE-AMS5516,
alloy 304 in accordance with SAE-AMS5513, alloy 305 in accordance with SAE-AMS5639, or alloy 410 in
accordance with SAE-AMS5504 (trunnion body only).
3.3.5 T-Bolt. T-bolts shall be in accordance with SAE-AS7479. Materials for the T-bolts shall be
corrosion-resistant steel alloy in accordance with SAE-AMS5732 or SAE-AMS5737. The bolts shall be
capable of withstanding a tensile load of 3180 pounds (1442 kg) minimum, without permanent
deformation or loss of function.
3.3.6 Nuts. Nuts shall be corrosion-resistant steel in accordance with NASM7873.
3.3.7 Threads. The class of threads shall be 3A and 3B, respectively, for the bolt and nut in
accordance with SAE-AS8879.
3.3.8 Passivation. The hose clamp assembly or individual piece parts, excluding the nut, shall be
passivated in accordance with SAE-AMS2700, method 2. A report shall be made available to the
qualifying activity upon request.
3.4 Component parts. The latch of the quick-release type shall be positive locking but easily
released when the nut is backed off. All component parts of quick-release clamps shall remain as an
assembly during installation or removal. T-bolt type clamps may require removal of latch components,
such as the nut.
3.5 Design and construction. Clamps shall be of a design to permit easy installation and removal in
confined places. Design shall require the bolt-type element to be an integral load-carrying member. A
permanently attached tongue shall be provided to insure that the clamp will exert a bearing pressure
throughout the complete circumference.
3.5.1 Welding. Resistance spot weld (RSW) in accordance with American Welding Society
AWS D17.2/D17.2M, class B.
3.6 Minimum adjustment range. A clamp for any given size shall have sufficient adjustment available
in the assembled condition so that an applied torque of 25 ±5 pound-inch (2.8 ±.6 Nm) will tighten it
uniformly around the full periphery of solid rounds or steel tubes. The rounds and tubes shall have
outside diameters to the maximum and minimum dimensions specified on MIL-DTL-8783/1, when tested
as specified in 4.7.2.
3.7 Sizes and dimensions. The sizes and dimensions shall conform to MIL-DTL-8783/1. Envelope
dimensions of the tightening device are applicable when the clamp is in the tightened positions on the
minimum and maximum size solid round or tube.
3.8 Load Deflection. The maximum deflection shall be 0.15 inch (0.4 mm) when tested in
accordance with 4.7.3.
3.9 Tensile load. The minimum tensile load of all sizes of clamps shall be 2250 pounds (1021 kg)
when tested as specified in 4.7.4.
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