Bel is a publicly traded company with over 65 years of family operation, recognized as a world leader in power, protection, and interconnect products. Our diverse portfolio, built through organic growth and acquisitions, serves critical industries including networking, telecommunications, computing, military, aerospace, transportation, and broadcasting. Applications also extend to automotive, medical, and consumer electronics.
The Omega product series features connectors qualified to the MIL-C-26500 general purpose specification. This line has been expanded to include products qualified to numerous Boeing BACC45/BACC63 connector specifications. Leveraging the MIL-C-26500 mating interface, Cinch has developed high-performance connectors (CN0966/CN0967/CN1020/CN1021/CN0909) with enhanced shielding, environmental sealing, fluid resistance, and vibration resistance. Additionally, CN0942/CN0944 fixed contact receptacle connectors are designed for custom board mount, flex circuit, and soldered wire applications, all meeting MIL-C-26500 requirements.
Bel / Cinch
Omega / C48 Series
MIL-C-26500, Boeing BACC45, Boeing BACC63
Shielding, Environmental Sealing, Fluid Resistance, Vibration Resistance, Positive Location Captivated Insert, Insert Face Seal, Pressuring Seal Contact, Anti-Deflection Disc, Resilient Socket Insert, Insert Rim Seal, Dynamic "O" Ring Shell Seal, Five-Key Shell Polarization, Metal-to-Metal Shoulder, Permanent Captivation, Contact Retention Clip, Wire Sealing Risers, Grommet
| Specification | Value |
|---|---|
| Qualified to | MIL-C-26500, Boeing BACC45 Series, Boeing BACC63 Series |
| Power Contact Sizes | 20, 16, 12 |
| Coax Contact Sizes | 12, 8 |
| Contact Termination | Crimp (front release), Optional fixed contacts (PC termination) |
| Coupling Styles | Bayonet, Threaded |
| Environmental Sealing | Yes |
| Shell Materials | Aluminum, Stainless-steel options |
| Shell Finish | Aluminum - anodize, optional electroless nickel / cadmium over nickel |
| Insulator Material | Silicone / Fluorosilicone, Glass-filled epoxy |
| Operating Temperature | -55C to +200C (-65F to 392F) |
| Ozone Resistance | 0.015% by volume |
| Temperature Life | Internal 238C for 1,000 hours |
| Moisture Resistance | 1,000 megohms minimum / MIL-STD-202, Method 106 |
| Thermal Shock | -55C (-67F) to 260C (500F) |
| Dielectric Strength | 1,500 volts VAC RMS |
| Current Rating (Size 20) | 7.5 Amps D.C. |
| Current Rating (Size 16) | 13.0 Amps D.C. |
| Current Rating (Size 12) | 23.0 Amps D.C. |
| Insulation Resistance | 5,000 megohms minimum |
| Vibration Resistance (Std) | 20 gs; 12 hours (Sinusoidal) |
| Vibration Resistance (MMB / Self-lock) | 39.6 gs RMS, 48 hours (Random) |
| Vibration Resistance (50 g's) | 50 gs |
| Contact Retention (Size 20) | 20 lb minimum |
| Contact Retention (Size 16) | 25 lb minimum |
| Contact Retention (Size 12) | 30 lb minimum |
| Durability (Threaded) | 200 mating cycles |
| Durability (Bayonet) | 500 mating cycles |
| Series Designation | Coupling Style | Shell Style | Environmental Class | Shell Size | Alternate Shell Positions | Contact Style | Insert Arrangements | Order Code | Military Designation | Reference |
|---|---|---|---|---|---|---|---|---|---|---|
| C48 | 0 = Threaded | 6 = Straight plug | R = Meets MIL-C-26500 (USAF) | 8, 10, 12, 14, 16, 18, 20, 22, 24 | 6, 7, 8, 9, 10 (See Table 1) | P = Pin, S = Socket | See page 5 | 100, 102, 105, 106 | MS24266 | N/A |
| C48 | 1 = Bayonet | 6 = Straight plug | R = Meets MIL-C-26500 (USAF) | 8, 10, 12, 14, 16, 18, 20, 22, 24 | 6, 7, 8, 9, 10 (See Table 1) | P = Pin, S = Socket | See page 5 | 100, 102, 105, 106 | MS24266 | N/A |
| BACC45FS1 | Threaded | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | Page 15 |
| BACC45FT1 | Bayonet | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | Page 15 |
| Series Designation | Coupling Style | Shell Style | Environmental Class | Shell Size | Alternate Shell Positions | Contact Style | Insert Arrangements | Order Code | Military Designation | Reference |
|---|---|---|---|---|---|---|---|---|---|---|
| C48 | 0 = Threaded | 0 = Square flange receptacle | R = Meets MIL-C-26500 (USAF) | 8, 10, 12, 14, 16, 18, 20, 22, 24 | 6, 7, 8, 9, 10 (See Table 1) | P = Pin, S = Socket | See page 5 | 100, 102, 105, 106 | MS24264 | N/A |
| C48 | 1 = Bayonet | 0 = Square flange receptacle | R = Meets MIL-C-26500 (USAF) | 8, 10, 12, 14, 16, 18, 20, 22, 24 | 6, 7, 8, 9, 10 (See Table 1) | P = Pin, S = Socket | See page 5 | 100, 102, 105, 106 | MS24264 | N/A |
| C48 | 0 = Threaded | 3 = Single-hole mounting receptacle | R = Meets MIL-C-26500 (USAF) | 8, 10, 12, 14, 16, 18, 20, 22, 24 | 6, 7, 8, 9, 10 (See Table 1) | P = Pin, S = Socket | See page 5 | 100, 102, 105, 106 | MS24265 | N/A |
| C48 | 1 = Bayonet | 3 = Single-hole mounting receptacle | R = Meets MIL-C-26500 (USAF) | 8, 10, 12, 14, 16, 18, 20, 22, 24 | 6, 7, 8, 9, 10 (See Table 1) | P = Pin, S = Socket | See page 5 | 100, 102, 105, 106 | MS24265 | N/A |
| BACC45FM1 | Threaded | Square Flange | N/A | N/A | N/A | N/A | N/A | N/A | N/A | Page 15 |
| BACC45FN1 | Bayonet | Square Flange | N/A | N/A | N/A | N/A | N/A | N/A | N/A | Page 15 |
| Shell Size | Coupling Style | A Diameter (in) | A Diameter (mm) | B Diameter (in) | B Diameter (mm) | C Maximum (in) | C Maximum (mm) | D Thread (UNEF-2A) |
|---|---|---|---|---|---|---|---|---|
| 8 | Threaded | 0.328 | 8.331 | 0.437 | 11.100 | 0.776 | 19.712 | 0.437-28 |
| 10 | Threaded | 0.420 | 10.668 | 0.562 | 14.275 | 0.906 | 23.013 | 0.562-24 |
| 12 | Threaded | 0.580 | 14.732 | 0.750 | 19.050 | 1.078 | 27.381 | 0.750-20 |
| 14 | Threaded | 0.664 | 16.866 | 0.812 | 20.625 | 1.141 | 28.982 | 0.812-20 |
| 16 | Threaded | 0.769 | 19.533 | 0.938 | 23.825 | 1.266 | 32.157 | 0.937-20 |
| 18 | Threaded | 0.902 | 22.911 | 1.062 | 26.975 | 1.375 | 34.925 | 1.062-18 |
| 20 | Threaded | 1.033 | 26.238 | 1.182 | 30.023 | 1.510 | 38.354 | 1.187-18 |
| 22 | Threaded | 1.152 | 29.261 | 1.312 | 33.325 | 1.625 | 41.275 | 1.312-18 |
| 24 | Threaded | 1.282 | 32.253 | 1.432 | 36.373 | 1.760 | 44.704 | 1.437-18 |
| 8 | Bayonet | 0.328 | 8.331 | 0.437 | 11.100 | 0.776 | 19.712 | 0.437-28 |
| 10 | Bayonet | 0.420 | 10.668 | 0.562 | 14.275 | 0.906 | 23.013 | 0.562-24 |
| 12 | Bayonet | 0.580 | 14.732 | 0.750 | 19.050 | 1.078 | 27.381 | 0.750-20 |
| 14 | Bayonet | 0.664 | 16.866 | 0.812 | 20.625 | 1.141 | 28.982 | 0.812-20 |
| 16 | Bayonet | 0.769 | 19.533 | 0.938 | 23.825 | 1.266 | 32.157 | 0.937-20 |
| 18 | Bayonet | 0.902 | 22.911 | 1.062 | 26.975 | 1.375 | 34.925 | 1.062-18 |
| 20 | Bayonet | 1.033 | 26.238 | 1.182 | 30.023 | 1.510 | 38.354 | 1.187-18 |
| 22 | Bayonet | 1.152 | 29.261 | 1.312 | 33.325 | 1.625 | 41.275 | 1.312-18 |
| 24 | Bayonet | 1.282 | 32.253 | 1.432 | 36.373 | 1.760 | 44.704 | 1.437-18 |
| Shell Size | Coupling Style | A 0.005 (in) | A 0.005 (mm) | B 0.005 (in) | B 0.005 (mm) | C Maximum (in) | C Maximum (mm) | D Maximum (in) | D Maximum (mm) | F Maximum (in) | F Maximum (mm) | G Thread (UNEF-2A) | H Thread (UNEF-2A) | J Minimum (in) | J Minimum (mm) | K Minimum (in) | K Minimum (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 8 | Threaded | 0.812 | 20.625 | 0.594 | 15.088 | 0.125 | 3.175 | 0.561 | 14.250 | 0.437 | 11.100 | 0.562-24 | 0.437-28 | 0.620 | 15.748 | 0.447 | 11.35 |
| 10 | Threaded | 0.937 | 23.800 | 0.719 | 18.263 | 0.125 | 3.175 | 0.696 | 17.679 | 0.562 | 14.275 | 0.687-24 | 0.562-24 | 0.748 | 18.999 | 0.572 | 14.52 |
| 12 | Threaded | 1.031 | 26.188 | 0.812 | 20.625 | 0.125 | 3.175 | 0.875 | 22.225 | 0.750 | 19.050 | 0.875-20 | 0.750-20 | 0.913 | 23.190 | 0.760 | 19.30 |
| 14 | Threaded | 1.125 | 28.575 | 0.906 | 23.013 | 0.125 | 3.175 | 0.935 | 23.749 | 0.812 | 20.625 | 0.937-20 | 0.812-20 | 0.980 | 24.892 | 0.822 | 20.87 |
| 16 | Threaded | 1.250 | 31.750 | 0.969 | 24.613 | 0.125 | 3.175 | 1.062 | 26.975 | 0.938 | 23.825 | 1.062-18 | 0.937-20 | 1.107 | 28.119 | 0.948 | 24.07 |
| 18 | Threaded | 1.343 | 34.112 | 1.062 | 26.975 | 0.125 | 3.175 | 1.187 | 30.150 | 1.062 | 26.975 | 1.187-18 | 1.062-18 | 1.209 | 30.709 | 1.072 | 27.22 |
| 20 | Threaded | 1.437 | 36.500 | 1.156 | 29.363 | 0.125 | 3.175 | 1.312 | 33.325 | 1.182 | 30.023 | 1.312-18 | 1.187-18 | 1.337 | 33.960 | 1.192 | 30.27 |
| 8 | Bayonet | 0.812 | 20.625 | 0.594 | 15.088 | 0.125 | 3.175 | 0.561 | 14.250 | 0.437 | 11.100 | 0.562-24 | 0.437-28 | 0.620 | 15.748 | 0.447 | 11.35 |
| 10 | Bayonet | 0.937 | 23.800 | 0.719 | 18.263 | 0.125 | 3.175 | 0.696 | 17.679 | 0.562 | 14.275 | 0.687-24 | 0.562-24 | 0.748 | 18.999 | 0.572 | 14.52 |
| 12 | Bayonet | 1.031 | 26.188 | 0.812 | 20.625 | 0.125 | 3.175 | 0.875 | 22.225 | 0.750 | 19.050 | 0.875-20 | 0.750-20 | 0.913 | 23.190 | 0.760 | 19.30 |
| 14 | Bayonet | 1.125 | 28.575 | 0.906 | 23.013 | 0.125 | 3.175 | 0.935 | 23.749 | 0.812 | 20.625 | 0.937-20 | 0.812-20 | 0.980 | 24.892 | 0.822 | 20.87 |
| 16 | Bayonet | 1.250 | 31.750 | 0.969 | 24.613 | 0.125 | 3.175 | 1.062 | 26.975 | 0.938 | 23.825 | 1.062-18 | 0.937-20 | 1.107 | 28.119 | 0.948 | 24.07 |
| 18 | Bayonet | 1.343 | 34.112 | 1.062 | 26.975 | 0.125 | 3.175 | 1.187 | 30.150 | 1.062 | 26.975 | 1.187-18 | 1.062-18 | 1.209 | 30.709 | 1.072 | 27.22 |
| 20 | Bayonet | 1.437 | 36.500 | 1.156 | 29.363 | 0.125 | 3.175 | 1.312 | 33.325 | 1.182 | 30.023 | 1.312-18 | 1.187-18 | 1.337 | 33.960 | 1.192 | 30.27 |
