FIELD GUIDESource-led reference

E203 · No electrical assignment published

FC fiber connector engineering reference

Corning 722-series FC-PC and 740-series adapter documentation, revision 2016-11-29. Key options and ferrule material are manufacturer-series evidence, not a universal FC dimensional standard.

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

FC 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 732-1021-005-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 732-1021-005-B
Coupling / latchthreaded metal coupling nut (Named series/reference only, not every family part. AFL FC 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 FC marketedconnector overview;not universalfamily mechanicaltolerance
Keying / polarizationfixed key (ExactCorning 732-1021-005-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 732-1021-005-B
ManufacturerCorning (ExactCorning 732-1021-005-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 732-1021-005-B
Exact part / implementation732-1021-005-B (ExactCorning 732-1021-005-B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 732-1021-005-B
View conventionActualAFL linked FC exterioroblique illustration inspected;not scaled andnoexactSKUassigned (Named series/reference only, not every family part. AFL FC 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 FC marketedconnector overview;not universalfamily mechanicaltolerance

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

Recorded variant and source limits
  • Key width, ferrule dimensions, polish, fiber type and measured loss are not established here.
  • An FC-ST sleeve changes the documented forms at the joint, not the optical signal or endface polish.
Report a correction to these facts →

Unknowns stay unknown.

  • Key width, ferrule dimensions, polish, fiber type and measured loss are not established here.
  • An FC-ST sleeve changes the documented forms at the joint, not the optical signal or endface polish.

Your next step

Use the detail without guessing past its limits.

Source trail

Claims and sources

C203Asource checked

Corning identifies FC-PC connectors and adapters as a distinct fiber-optic connectivity family.

Corning · FC connectors and adapters ↗
FC connector and adapter overview · Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

C203Bsource checked

Corning’s 722-series FC-PC description offers fixed or removable keys and pre-radiused zirconia ferrules.

Corning · Corning FC-PC connectors and adapters — CAH-136_AEN ↗
Pages 1 and 3: 722-series key and ferrule description; 740-series FC and hybrid FC-ST ordering table. · No universal FC key-width, ferrule-diameter, polish-conversion or loss-budget assertion. Do not use the panel-mount descriptions as mating-interface dimensions.

C203Csource checked

Corning’s 740-series ordering table includes FC-ST hybrid adapters, including 740-002N-003 with metal or ceramic sleeve options.

Corning · Corning FC-PC connectors and adapters — CAH-136_AEN ↗
Pages 1 and 3: 722-series key and ferrule description; 740-series FC and hybrid FC-ST ordering table. · No universal FC key-width, ferrule-diameter, polish-conversion or loss-budget assertion. Do not use the panel-mount descriptions as mating-interface dimensions.

C203Fsource checked

AFL lists a nominal 2.5 mm ferrule for its FC connector overview. AFL describes threadedmetal coupling nut.

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.

C203Gsource checked

Corning OEM-064-AEN lists 732-1021-005-B as: FC single-mode subassembly, fixed key; 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.

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

Evidence behind this page

Scope first. Source second. Approval separate.

4 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 2027-01-03. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 4 source scopes, access limits and dates

S206 · FC connectors and adapters

Corning · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Identifies FC-PC fiber-optic connector and adapter products as a threaded circular fiber-connector family.

Not established / limitations: Identification/reference scope only. V36 does not convert this source into a universal pinout, fabrication drawing, electrical approval or end-to-end compatibility verdict.

Locator: FC connector and adapter overview

S420 · Corning FC-PC connectors and adapters — CAH-136_AEN

Corning · Manufacturer / product-owner domain · inspected 2026-10-07 · due 2027-01-05

Within inspection window

Scoped support: 722-series connector and 740-series adapter examples in the 2016-11-29 revision.

Not established / limitations: No universal FC key-width, ferrule-diameter, polish-conversion or loss-budget assertion. Do not use the panel-mount descriptions as mating-interface dimensions.

Locator: Pages 1 and 3: 722-series key and ferrule description; 740-series FC and hybrid FC-ST ordering table.

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

C203A · P203

Corning identifies FC-PC connectors and adapters as a distinct fiber-optic connectivity family.

Claim scope: V36 catalogue-expansion identification fact only; not independent technical approval, fabrication data, wiring instruction or end-to-end compatibility proof.

Source links: S206 · Evidence trail → (private workspace)

C203B · P203

Corning’s 722-series FC-PC description offers fixed or removable keys and pre-radiused zirconia ferrules.

Claim scope: CAH-136_AEN revision 2016-11-29, page 1; no inferred key width or universal ferrule construction.

Source links: S420 · Evidence trail → (private workspace)

C203C · P203

Corning’s 740-series ordering table includes FC-ST hybrid adapters, including 740-002N-003 with metal or ceramic sleeve options.

Claim scope: Page 3 of the cited revision; the hybrid connector forms do not establish polish, fiber-type or end-to-end optical compatibility.

Source links: S420 · Evidence trail → (private workspace)

C203F · P203

AFL lists a nominal 2.5 mm ferrule for its FC connector overview. AFL describes threadedmetal coupling nut.

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

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

C203G · P203

Corning OEM-064-AEN lists 732-1021-005-B as: FC single-mode subassembly, fixed key; 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.