Fibre Optic Connectors
MIL-PRF-28876 Style
Fibre Optic Connection System
FINISH
| SYM | MATERIAL | FINISH DESCRIPTION |
|---|
| NF | Aluminium | Olive Drab Chromate over Cadmium, over Electroless Nickel (500 Hrs Salt Spray) |
BACKSHELL DESIGNATOR
| Backshell Designator | Max Allowable Cable Diameter by Shell Size |
|---|
| 11 | 13 | 15 | 23 |
|---|
| 1 | .250 (6.4) | .285 (7.2) | .500 (12.7) | .866 (22.0) |
| 2 | .346 (8.8) | .346 (8.8) | .250 (6.4) | 1.000 (25.4) |
| 3 | | .453 (11.5) | .375 (9.5) | .600 (15.2) |
APPLICATION NOTES
- Assembly packaged in plastic bag and tag identified with manufacturer’s name and part number.
- Material/ Finish:
- A. External Hardware: See Table I
- B. Internal Hardware: Aluminium Alloy/Chem Film, Stainless Steel/Passivate
- C. Misc. Hardware: Stainless Steel/Passivate
- D. Insert: Aluminium Alloy/Anodize or High-Grade Thermoplastic, Mfr’s Option
- E. Seals: Fluorosilicone
- F. Consult factory for alternate materials and finishes.
- Backnut retained using thread-locking compound.
- Termini (Not Supplied with Connector):
- M29504/14 - Pin terminus, MIL-Spec
- M29504/15 - Socket Terminus, MIL-Spec
- 181-039 - Pin Terminus, MIL-Spec Style
- 181-040 - Socket terminus, MIL-Spec Style
- 181-051 - Dummy Terminus MIL-Spec Style
- Consult factory for appropriate termination and assembly tools/procedures.
- Operating Temperature Range: -55° to +125°C.
- Metric dimensions (mm) are indicated in parentheses.
KEYING POSITION
| Shell Size | Keying Position | A° | B° | C° | D° |
|---|
| 11 and 13 | 1 | 95 | 141 | 208 | 236 |
| 2 | 113 | 156 | 182 | 292 |
| 3 | 90 | 145 | 195 | 252 |
| 4 | 53 | 156 | 220 | 255 |
| 5 | 119 | 146 | 176 | 298 |
| 6 | 51 | 141 | 184 | 242 |
| 15 and 23 | 1 | 80 | 142 | 196 | 293 |
| 2 | 135 | 170 | 200 | 310 |
| 3 | 49 | 169 | 200 | 244 |
| 4 | 66 | 140 | 200 | 257 |
| 5 | 64 | 145 | 180 | 280 |
| 6 | 79 | 153 | 197 | 272 |
TERMINUS CAVITIES
| Shell Size | Number of Terminus Cavities |
|---|
| 11 | 02 |
| 13 | 04 |
| 15 | 06 or 08 |
| 23 | 18 or 31 |
CONNECTOR TYPE
| Connector Type | Backshell Type | Connector Style | MIL-Spec Style Slash Number |
|---|
| Wall Mount Receptacle | None | 03 | M28876/1 |
| Straight | 13 | M28876/2 |
| 45° | 23 | M28876/3 |
| 90° | 33 | M28876/4 |
| In-Line Receptacle | Straight | 15 | M28876/5 |
| Plug | None | 06 | M28876/6 |
| Straight | 16 | M28876/7 |
| 45° | 26 | M28876/8 |
| 90° | 36 | M28876/9 |
| Jam Nut Receptacle | None | 04 | M28876/11 |
| Straight | 14 | M28876/12 |
| 45° | 24 | M28876/13 |
| 90° | 34 | M28876/14 |
