FIELD GUIDESource-led reference

E124 · No electrical assignment published

ST fiber connector engineering reference

TE 5504008-series / 501381-1 example from 408-4151 Rev B, page 1. The stainless-steel ferrule is specific to that documented kit, not every ST product.

Source checked · no independent review claimed · Fabrication approved: no

ST fiber connector — exterior side view; plug-style exterior; original, not-to-scale identification schematic; drawing review pending
View Exterior side viewDepiction Plug-style exteriorNot to scale · independent drawing review pending
Identification schematic only · not to scale · drawing review pending. No engineering drawing is published for this profile.

Orientation

How to read this profile

Interface identification and source-scoped construction only. No measured drawing, mirrored rear view, termination map or electrical pinout is supplied.

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Connector roleoptical connector subassembly (ExactCorning 730-1021-006-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 730-1021-006-B
Coupling / latchbayonet (Claim C124A); quick-release bayonet (Named series/reference only, not every family part. AFL ST marketedconnector overview;not universalfamily mechanicaltolerance)S099 · S954Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Identification and explicitly scoped documentation only; not an end-to-end connection approval Named series/reference only, not every family part. AFL ST marketedconnector overview;not universalfamily mechanicaltolerance
ManufacturerCorning (ExactCorning 730-1021-006-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 730-1021-006-B
Exact part / implementation730-1021-006-B (ExactCorning 730-1021-006-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 730-1021-006-B
View conventionActualAFL linked ST exterioroblique illustration inspected;not scaled andnoexactSKUassigned (Named series/reference only, not every family part. AFL ST marketedconnector overview;not universalfamily mechanicaltolerance)S954Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Named series/reference only, not every family part. AFL ST marketedconnector overview;not universalfamily mechanicaltolerance

Not recorded: Dimensions / axis, Mounting, Keying / polarization, Shell / form, Series, Recorded markings. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits
  • Fiber type, polish, optical loss budget and exact counterpart are separate checks.
  • No dimensioned mating interface or electrical contact map is published. Never look into a fiber to identify it.
Report a correction to these facts →

Unknowns stay unknown.

  • Fiber type, polish, optical loss budget and exact counterpart are separate checks.
  • No dimensioned mating interface or electrical contact map is published. Never look into a fiber to identify it.

Your next step

Use the detail without guessing past its limits.

Source trail

Claims and sources

C124Bsource checked

Cisco warns against looking into energized fiber and using unfiltered magnifiers for optical inspection.

Cisco · Fiber-optic inspection safety boundaries ↗
Warnings · V12 does not reproduce or authorize cleaning, live inspection, loss testing or optical engineering procedures.

C124Csource checked

TE’s 5504008-series ST kit example has an alignment key, metal coupling nut and stainless-steel ferrule. Its 501381-1 receptacle is described for joining two bayonet connectors.

TE Connectivity / Tyco Electronics · TE ST stainless-steel ferrule kits and coupling receptacle — 408-4151 Rev B ↗
Page 1: Figure 1 alignment key and ferrule labels; kit 5504008 series and coupling receptacle 501381-1. · Only page 1 was visually inspected. No assembly instructions, tolerances, fiber preparation dimensions or universal ferrule-material claim are reproduced. Parts of the PDF text layer are garbled; Figure 1 labels were visually checked.

C124Fsource checked

AFL lists a nominal 2.5 mm ferrule for its ST connector overview. AFL describes quick-release bayonet(stick and twist) body.

AFL Hyperscale · Adapters and Connectors:Connectors ↗
Full manufacturer page: LC,SC,ST,FCsections and each directlylinked connector image; all4actual JPEGs downloaded/viewed. · Ferrule dimensions refer to AFL overview context, not universal housing/mating tolerances. Image-only latch/body observations remain labelled manufacturer illustrations; no measurements,partmarkings or performance from pixels.

C124Gsource checked

Corning OEM-064-AEN lists 730-1021-006-B as: ST single-mode subassembly; metal housing, no boot, yellow dust cap.

Corning · AFOP FastShip Connector and Adapter Ordering Guide OEM-064-AEN ↗
Full18-page PDF text: p.5ST/FC/SC,p.6LCno-logo variants,p.9MT-RJ,p.11ST/FCsubassemblies,p.18revision. · Direct download403 and drawing/photo pixels unavailable. Table126/127micrometre ferrule-size values are not imported as outer ferrule diameters; unspecified SCboot3micrometre transcription is excluded. Table colors are exact-part descriptors, not general family marks.

5 source records support this profile. No independent engineering review or hardware validation is claimed.

Evidence behind this page

Scope first. Source second. Approval separate.

5 linked sources · 5 scoped claims · 0 sources with inspection/access flags.

Page scope: No V76 drawing added; original recognition artwork remains unchanged and is not a fabrication reference.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-01. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 5 source scopes, access limits and dates

S099 · Fiber connector guide — ST outline

C2G / Legrand · Manufacturer / product-owner domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: ST uses a round body and bayonet retention; SC uses a different housing and retention style.

Not established / limitations: No fiber compatibility, optical-budget calculation or end-face inspection instruction is derived from housing shape.

Locator: ST; SC

S104 · Fiber-optic inspection safety boundaries

Cisco · Manufacturer / product-owner domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: Do not look into energized fiber or use unfiltered magnifiers to inspect optical connectors.

Not established / limitations: V12 does not reproduce or authorize cleaning, live inspection, loss testing or optical engineering procedures.

Locator: Warnings

S421 · TE ST stainless-steel ferrule kits and coupling receptacle — 408-4151 Rev B

TE Connectivity / Tyco Electronics · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05

Within inspection window

Scoped support: Named ST stainless-steel kit and bayonet-coupling example; revision B dated 2008-12-03.

Not established / limitations: Only page 1 was visually inspected. No assembly instructions, tolerances, fiber preparation dimensions or universal ferrule-material claim are reproduced. Parts of the PDF text layer are garbled; Figure 1 labels were visually checked.

Locator: Page 1: Figure 1 alignment key and ferrule labels; kit 5504008 series and coupling receptacle 501381-1.

S951 · AFOP FastShip Connector and Adapter Ordering Guide OEM-064-AEN

Corning · Manufacturer / product-owner domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Exact named connector/subassembly construction and named no-logo option; keep each role separate.

Not established / limitations: Direct download403 and drawing/photo pixels unavailable. Table126/127micrometre ferrule-size values are not imported as outer ferrule diameters; unspecified SCboot3micrometre transcription is excluded. Table colors are exact-part descriptors, not general family marks.

Locator: Full18-page PDF text: p.5ST/FC/SC,p.6LCno-logo variants,p.9MT-RJ,p.11ST/FCsubassemblies,p.18revision.

S954 · Adapters and Connectors:Connectors

AFL Hyperscale · Unclassified publisher domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: AFL marketed connector-series examples: stated ferrule nominal sizes and coupling mechanisms; no exact orderableSKU.

Not established / limitations: Ferrule dimensions refer to AFL overview context, not universal housing/mating tolerances. Image-only latch/body observations remain labelled manufacturer illustrations; no measurements,partmarkings or performance from pixels.

Locator: Full manufacturer page: LC,SC,ST,FCsections and each directlylinked connector image; all4actual JPEGs downloaded/viewed.

Trace 5 claims to their source records

C124A · P124

The ST guide identifies a round body with bayonet-style retention.

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval

Source links: S099 · Evidence trail → (private workspace)

C124B · P124

Cisco warns against looking into energized fiber and using unfiltered magnifiers for optical inspection.

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval

Source links: S104 · Evidence trail → (private workspace)

C124C · P124

TE’s 5504008-series ST kit example has an alignment key, metal coupling nut and stainless-steel ferrule. Its 501381-1 receptacle is described for joining two bayonet connectors.

Claim scope: TE 408-4151 Rev B, page 1 only; named component example, not every ST ferrule or a fabrication drawing.

Source links: S421 · Evidence trail → (private workspace)

C124F · P124

AFL lists a nominal 2.5 mm ferrule for its ST connector overview. AFL describes quick-release bayonet(stick and twist) body.

Claim scope: AFL ST marketedconnector overview;not universalfamily mechanicaltolerance;ferrulesize is not outerhousingdimension,contactpitch or sourceimage measurement.

Source links: S954 · Evidence trail → (private workspace)

C124G · P124

Corning OEM-064-AEN lists 730-1021-006-B as: ST single-mode subassembly; metal housing, no boot, yellow dust cap.

Claim scope: Exact named Corningpart/subassembly inMay2020catalog;no universalfinish,matingdimension or assemblyapproval.

Source links: S951 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.