Commercial 29504 /4 and /5 Fiber Optic Termini


Corning’s commercial grade 410-0003 and 410-0005 series optical terminus is the optical and dimensional equivalent of the MIL-PRF-29504/4 &/5 terminus and is the proven work-horse of Corning’s commercial 28876 and TACLight™ connectors. Built around a single-mode quality Zirconia ferrule, Corning’s commercial grade 410-0003 and 410-0005 series optical termini offer single-mode performance at multimode affordability. The ferrule comes chamfered and pre-radiused to minimize polish time and consumption of expensive polishing films. So as to eliminate entrapped air in the bonding adhesive, ferrules are bottom pressed into the ferrule holder for unsurpassed reliability.

With its eleven, specially heat treated Beryllium Copper Belleville washers, the 410-0003 offers consistent terminus mating forces of between 5 – 7 lbs. These mating forces have been proven to prevent optical discontinuities for demanding shock loads in excess of 1,500 g’s in 3 milliseconds and vibration levels in excess of 40 g’s RMS.

The 410-0003 and 410-0005 are supplied with Fluorosilicone ‘O’-rings for environmental sealing of the connector insert cavity for open face pressures of up to 1 atmosphere. For applications requiring high pressure sealing of the insert cavity from the reverse direction (e.g. cable buoyancy compensation fluids, etc.), the 410-0036 and 410-0038 series termini incorporate a working-pressure actuated chevron seal capable of sealing pressures in excess of 2,000 psi. Angle polished and keyed versions are available for single-mode sensor applications. Designed to be used with a standard 0.0945” hexagonal crimper, Especially heat treated and gold flashed crimp sleeves capture Aramid fiber reinforced OFCC strength elements in excess of 22 pounds of tensile load.

To support these termini, Corning offers a full line of installation and extraction tools as well as a field kit for termination and polishing.


  • Deployable Harsh Environment Systems
  • Emergency Restoration Systems
  • Video / Data Transmission Links
  • Sensor Systems
  • High Pressure Penetrators
Download Spec Sheets


Features / Options

Pin Multimode (Long)

  • Max Fiber (Diameter in Microns) : 126
  • Corning Part Number: 410-0006-126

Socket Multimode (Long)

  • Max Fiber (Diameter in Microns) : 126
  • Corning Part Number: 410-0006-126

 Pin Singlemode (Long)

  • Max Fiber (Diameter in Microns) : 126
  • Corning Part Number: 410-0006-126

Socket Singlemode (Long)

  •  Max Fiber (Diameter in Microns) : 126
  • Corning Part Number: 410-0006-126

 Termini Mechanical Specifications

  • Connectors incorporating these termini typically meet high impact shock and vibration requirements while maintaining the optical path for error free data transfers.
  • Other ferrule materials can be made available
  • Short travel with extremely high loads, (approximately 5-7 lbs).
  • The zirconia ferrules are held to extreme tolerances (1um TIR).


Title Description
Operating Temperature Range -65°C to +110°C (up to 175°C, withhigh Tg adhesive for bonding the fiber)
Thermal Cycling: -54°C to +65°C
Thermal Shock: -55°C to +85°C
Temperature Life: +110°C for 240 hours
Thermal Shock: 40°C to +70°C per EIA-455-71
Vibration: Up to 40 g’s rms
Physical Shock 1,500 g’s at 3ms
Mating Durability: 500 cycles with average change of optical transmission of 0.13dB
Salt Spray: 500 hours
Pressure Sealing: 1 atmosphere (standard), 2,000 psi (chevron seal)
Terminus Mating Force: 5 - 7 lbs Typical
Terminus Retention Force: > 22 lbs
OFCC Retention Force > 22 lbs (dependent upon OFCC construction)
Weight: 0.7g