AA-59551 Tinned Copper Buss Wire
Tinned Copper Buss Wire was previously considered Type QQ-W-343, Mil-W-3861, and ASTM-B-33 wire, but it now falls under the Mil-Spec A-A-59551 specification. It is composed of pure electrolytic soft drawn, solid copper, which is properly annealed and tinned for quick soldering. This tinned copper wiring may be used for winding of coils, antennas, point-to-point wiring and for ground wire applications
| Blake Part Number | AWG | Diameter (inches) | Max. Breaking Strength | Max. DC Resistance @ 20°C | Weight |
|---|---|---|---|---|---|
| BTC-361 | 36 | 0.005 | .785 lbs | 445 Ohms/1000 ft | .076 lbs/1000 ft |
| BTC-341 | 34 | 0.006 | 1.25 lbs | 280 Ohms/1000 ft | .120 lbs./1000 ft |
| BTC-321 | 32 | 0.008 | 1.99 lbs | 176 Ohms/1000 ft | .191 lbs./1000 ft |
| BTC-301 | 30 | 0.010 | 3.16 lbs | 111 Ohms/1000 ft | .304 lbs./1000 f |
| BTC-281 | 28 | 0.013 | 5.02 lbs | 68.9 Ohms/1000 ft | .484 lbs./1000 ft |
| BTC-261 | 26 | 0.016 | 7.98 lbs | 43.3 Ohms/1000 ft | .769 lbs./1000 ft |
| BTC-241 | 24 | 0.020 | 12.7 lbs | 27.3 Ohms/1000 | 1.22 lbs/1000 f |
| BTC-221 | 22 | 0.025 | 19.4 lbs | 17.0 Ohms/1000 ft | 1.95 lbs./1000 ft |
| BTC-201 | 20 | 0.032 | 30.9 lbs | 10.6 Ohms/1000 ft | 3.09 lbs/1000 ft |
| BTC-181 | 18 | 0.040 | 49.1 lbs | 6.64 Ohms/1000 ft | 4.92 lbs./1000 ft |
| BTC-161 | 16 | 0.051 | 78.1 lbs | 4.18 Ohms/1000 ft | 7.82 lbs./1000 ft |
| BTC-141 | 14 | 0.064 | 124 lbs | 2.63 Ohms/1000 ft | 12.4 lbs./1000 ft |
| BTC-121 | 12 | 0.081 | 198 lbs | 1.65 Ohms/1000 ft | 19.8 lbs./1000 ft |
| BTC-101 | 10 | 0.102 | 314 lbs | 1.04 Ohms/1000 ft | 31.4 lbs./1000 ft |
| BTC-081 | 8 | 0.129 | 480 lbs | .646 Ohms/1000 ft | 50.0 lbs./1000 ft |
