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Material, explained

ST connector.

Also written straight tip connector, bayonet fibre connector, ST to LC cord.

What is an ST fibre connector?

The round bayonet connector of the first generation of multimode fibre, with a 2.5 millimetre ferrule like an SC and a twist lock like a BNC. Nothing new is designed around it, but a great deal of older plant in factories and campuses still ends in ST adapter plates, so ST to LC and ST to SC cords remain how an old panel meets a new switch.

Defined by IEC 61754-2, the ST connector interface, published by IEC.

Multimode Fibre Pigtail / Simplex Lead - ST (NCB-FM50S-ST1), a ST connector part supplied by Data Systems
ST connector in the catalogue: Multimode Fibre Pigtail / Simplex Lead - ST (NCB-FM50S-ST1), NCB-FM50S-ST1. Catalogue photograph.

Published by Data Systems, network material suppliers in Secunderabad, Hyderabad since 1984, which is 42 years of experience with these parts. Written from the standards named above. Last checked 2026-08-19. How we check this, and what we got wrong.

Data Systems, a network material supplier in Secunderabad, Hyderabad since 1984 with branches in Vijayawada and Visakhapatnam, supplies ST connector across India through official channels. Send a list, get one quote.

Fibre Patch Cord

Multimode Duplex Fibre Adaptor / Coupler - ST-ST

Multimode Fibre Pigtail / Simplex Lead - ST

Single-mode Simplex Fibre Adaptor / Coupler - ST-ST

Where it is used

Related terms

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Data Systems · +91 99595 55222 (call or WhatsApp) · 040-27811708 · admin@datasystems.co.in · Secunderabad (HQ) · Vijayawada · Visakhapatnam · Mon to Sat, 9:30 to 7

Some images on this site were created with AI and the item supplied may not look exactly as shown. The part code, not the picture, decides what ships.

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