Black Box Crimp-Lock Fiber Optic Connectors

The Ideal Choice for Quick or Emergency Fiber Connections

Low Price Guarantee


What's special about these fiber optic connectors?

  • Ideal for emergency restoration work or quick fiber connections made on the spot
  • No epoxy means no mess, no toxicology issues, and no waiting
  • The preradiused PC zirconia ceramic ferrule ensures fiber contact and reliable performance
  • Click for More Features

The Black Box Crimp-Lock Fiber Optic Connectors are the ideal choice for quick or emergency 62.5-micron multimode fiber connections. No epoxy means no mess, no toxicology issues, and no waiting.


BB-FO120 SC Crimp Lock Fiber Optic Connector Multimode 2.4" L x 0.362" H 0.3 lb
BB-FO121 ST Crimp Lock Fiber Optic Connector Multimode 2.7" L x 0.362" H 0.3 lb
  • These crimp-lock connectors meet EIA/TIA-568 performance specifications
  • Easy to use, requires no adhesive, setup, or electricity required to bond
  • The locking arm closes the metal element securely around the fiber
  • Eliminates possible points of failure because there is no fiber splice or second joint inside the connector, so there is no added attenuation
  • 1 Year Double Diamond Protection

These Crimp Lock Connectors help eliminate possible points of failure because there is no fiber splice or second joint inside the connector, and there is no added attenuation at the connection.

For sure connection, the fiber passes through the back end of the connector, through the conformable metal element, and beyond the end of the activation cap. Pressing the activation cap locking arm closes the metal element securely around the fiber. It’s that simple.

Inside the connectors, fiber movement is prevented two ways: The malleable metal element is designed to grip the fiber, and the plastic buffer retention insert grips the buffer without crushing it when the crimp ring is crimped.
  FO120 FO121
Operating Temperature 14° to 140°F (-10° to 60°C)
Fiber Size 125 μm multimode
Attenuation (@1300 nm)
Mean 0.13 dB 0.14 dB
Maximum 0.29 dB 0.34 dB
Return Loss
Mean 29 dB
Maximum 27 dB
Construction Materials
Boot Elastomeric resin
Connector Body and Housing Thermoplastic polymer
Connector Ferrule Zirconia ceramic
Housing Engineering thermoplastic Nickel-plated zinc
Sleeve Ceramic Beryllium copper


The Double Diamond Warranty is our no-questions-asked warranty that protects your BLACK BOX® brand products from accidental damage, including drops, water, and power surges. Most products come with a one- or two-year warranty. Some products, such as copper cables, manual switches, cabinets, and racks, are guaranteed for life! During the warranty period, Black Box will repair or replace your damaged equipment within one week of receipt at NO CHARGE!





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