Cable Category → Connector Fit Guide

A practical reference to help you choose connector families that fit your cable — especially when swapping between RG/LMR/Belden equivalents.

Rule of thumb: Cables in the same Category letter generally (but not always) take the same connector mechanical set — the same pin/bushing/ferrule sizes. For example, if you need connectors for Category C cables like LMR-195 or RG-122, you can usually use connector types sold “for RG-58”.

How the categories help

  • Fast matching: Find your cable’s Category, then choose connectors advertised for any cable in that same Category.
  • Cross-reference: Categories group common mechanical families across RG/LMR/Belden lines.
  • Reduced guesswork: Useful when a connector lists RG58, but you’re using LMR195 (both Cat C).

Important caveats

  • Centre conductor: Solid vs stranded can change pin fit (slit/unslit pins, drill sizes).
  • Shield build: Single vs double braid or bonded foil can nudge ferrule OD — see B2/B3 sub-categories.
  • Brand tolerances: Some series use tighter ferrule tolerances — check the connector’s specified crimp sizes.
  • Semi-rigid: L/L2/L3/L4 use different build methods (formed/soldered). Treat each L-group as its own fit family.

Cable list & categories

Cables of the same Category will generally (but not always) take the same connectors. Always check centre conductor and shield construction.

Cable TypeImpedance (Ω)Category
RG-17850A
RG-19650A
LMR-10050B
RG-17450B
RG-18850B
Belden 922175B1
RG-17970B1
RG-18775B1
RG-188 Double Braided50B2
RG-316 Double Braided50B2
RG-179 Double Braided75B3
Belden 7806A50C
Belden 990750C
LMR-19550C
RG-12250C
RG-30350C
RG-5853.5C
RG-14250C/C1
RG-14150C1
RG-22350C1
RG-30450C1
RG-40050C1
RG-5553.5C1
Belden 7807A50C2
LMR-20050C2
Belden 8824053D
Belden 8990750D
Belden 824175E
Belden 826375E
Belden 827975E
Belden 920975E
RG-14075E
RG-21093E
RG-5973E
RG-6293E
Belden 1426A75E1
Belden 1505A75E1
Belden 828175E1
Belden 910075E1
Belden 150675F1
Belden 8210875F1
Belden 910475F1
Belden 1152A75G1
Belden 8924875G1
Belden 929075G1
Belden 925850G2
LMR-24050G2
Belden 991350G3
Belden 991450G3
LMR-40050G3
RG-21350G4
RG-21450G4
RG-22550G4
RG-30275G4
RG-39350G4
RG-852G4
RG-8750G4
RG-951G4
AT&T 734A75I
AT&T 735A75I2
Belden 735A175I2
LMR-60050K
Belden 1855A75K3
Belden 1865A75K3
RG-18093K3
RG-19595K3
RG-402 (0.141 Semi-Rigid + semi-flex)50L
RG-405 (0.086 Semi-Rigid + semi-flex)50L2
RG-401 (0.250 Semi-Rigid)50L3
0.047 Semi-Rigid50L4
Belden 167450L4

Buying checklist

  • Category match: Choose connectors that list any cable in your Category.
  • Pin size: Check pin ID vs cable centre conductor (solid/stranded gauge).
  • Ferrule size: Match ferrule ID to your cable’s braid/foil OD (watch double-braid variants).
  • Assembly method: Crimp vs solder vs clamp per connector series and your tools.
  • Semi-rigid: Use L/L2/L3/L4-specific parts and methods.

Popular connector options (all connectors)

CH MCXJ 316 BH - RF Shop UK
Quick view
Bulkhead

MCX Connector, RG316, (conventional female), Bulkhead, CH-MCXJ-316-BH

(0)

MCX Connector, RG316, (conventional female), Bulkhead

Part Number: CH-MCXJ-316

£1.50 - £1.87 Ex Vat
Avaibility: 25 in stock
Add to basket
CH MCXJ 316 - RF Shop UK
Quick view
COAXIAL CABLE CONNECTORS

MCX Connector, RG316, (conventional female), CH-MCXJ-316

(0)

MCX Connector, RG316, (conventional female),

Part Number: CH-MCXJ-316

£1.50 - £1.87 Ex Vat
Avaibility: 16 in stock
Add to basket
CH AP 01 - RF Shop UK
Quick view
COAXIAL CABLE CONNECTORS

Connector, SMA Plug, 4 Hole Flange, CH-AP-01

(0)

Connector, SMA Plug, 4 Hole Flange, 

Part Number: CH-AP-01,

Coaxial Connector,

SMA Plug (Conventional Male),

4 Hole Square Flange,

£1.50 - £1.87 Ex Vat
Avaibility: 10 in stock
Add to basket
CH FMEJ 06 - RF Shop UK
Quick view
COAXIAL CABLE CONNECTORS

FME Jack, (Female pin), suit RG6, CH-FMEJ-06

(0)

FME Jack, (Female pin), suit RG6,

Part Number: CH-FMEJ-06

£1.51 - £1.89 Ex Vat
Avaibility: 15 in stock
Add to basket
CH BP 400 - RF Shop UK
Quick view
400 series

BNC Plug, (Conventional Male), Crimp, L400, CH-BP-400

(0)

BNC Plug, (Conventional Male), Crimp, L400,

Part Number: CH-BP-400

£1.63 - £2.04 Ex Vat
Avaibility: 4 in stock
Add to basket
CH RBJ 58 BH - RF Shop UK
Quick view
BNC

Coaxial Connector BNC jack, Reverse Polarity (male inner pin), Bulkhead RG58, LMR195, Crimp,CH-RBJ-58-BH

(0)

Coaxial Connector BNC jack, Reverse Polarity (male inner pin), Bulkhead, RG58, LMR195, Crimp,

Part Number: CH-RBJ-58-BH

£1.40 - £1.75 Ex Vat
Avaibility: 10 in stock
Add to basket
CH BJ 400 - RF Shop UK
Quick view
400 series

Coaxial Connector BNC jack, female inner pin, L400, Crimp,CH-BJ-400

(0)

Coaxial Connector BNC jack, female inner pin, L400, Crimp,

Part Number: CH-BJ-400

£1.16 - £1.45 Ex Vat
Avaibility: 60 in stock
Add to basket
CH BJ 58 BH - RF Shop UK
Quick view
BNC

Coaxial Connector BNC jack, female inner pin, Bulkhead, RG58, LMR195, Crimp,CH-BJ-58-BH

(0)

Coaxial Connector BNC jack, female inner pin, Bulkhead, RG58, LMR195, Crimp,

Part Number: CH-BJ-58-BH

£1.55 - £1.94 Ex Vat
Avaibility: 45 in stock
Add to basket
CH AP 240 RA - RF Shop UK
Quick view
240 series

Connector, SMA Plug, 240 series cable, Right Angled, CH-AP-240-RA

(0)

Connector, SMA Plug, 240 series cable, Right Angled, 

Part Number: CH-AP-240-RA, 

Coaxial Connector, 

SMA, 

Plug (conventional Male), 

Cable: 240 Series, 

Right Angled, 

Crimp, 

 

RFShopUK- 240 Series Cable

£1.90 - £2.37 Ex Vat
Avaibility: 28 in stock (can be backordered)
Add to basket
CH AP 178 - RF Shop UK
Quick view
COAXIAL CABLE CONNECTORS

Connector, SMA, Plug, RG178, CH-AP-178

(0)

Connector, SMA, Plug, RG178, 

Part Number: CH-AP-178, 

Coaxial Connector, 

SMA, 

Plug (Conventional Male), 

RG178, 

Crimp, 

RFShopUK- RG178 Cable

£1.50 - £1.87 Ex Vat
Avaibility: 25 in stock (can be backordered)
Add to basket
CH AJ 10a - RF Shop UK
Quick view
COAXIAL CABLE CONNECTORS

Connector, SMA, Jack, Panel Mount, 4 hole Flange, CH-AJ-10

(0)

Connector, SMA, Jack, Panel Mount, 4 hole Flange, 

Part Number: CH-AJ-10, 

Coaxial Connector, 

SMA, 

Jack (Conventional Female/Socket), 

Panel Mount, 

4 hole Flange (12.7mm/1/2″), 

Teflon (2.5mm/0.098″ -7mm/0.27″)

Pins Pre trimmed to lengths between 4mm and 10mm (including 2mm teflon) Hence price of 50p

RFShopUK Other SMA Flanged Connectors.

£0.40 - £0.50 Ex Vat
Avaibility: 346 in stock
Add to basket
CH RAJ 400 - RF Shop UK
Quick view
400 series

Connector, SMA, Jack RP, 400 Series, CH-RAJ-400

(0)

Connector, SMA, Jack RP, 400 Series,

Part Number: CH-RAJ-400, 

Coaxial Connector, 

SMA, 

Reverse Polarity Jack (Male Inner Pin), 

Cable: 400 Series, RG393, RG213, RG8, 

Crimp, 

RFShopUK-400 series Cable

RFShopUK-RG393 Cable

RFShopUK-RG213 Cable

RFShopUK-Alternate-SMA6100-L400

£2.04 - £2.55 Ex Vat
Avaibility: 30 in stock (can be backordered)
Add to basket

Category C (RG58 / LMR-195) — all connector types

Category C — by connector family

SMA for RG58 / LMR195
N-Type for RG58 / LMR195
TNC for RG58 / LMR195

Category G2 (LMR-240 / 240-series) — connectors


Category G3 (LMR-400 / 400-series) — connectors


Category C2 (LMR-200 / 200-series) — connectors


Category K (LMR-600 / 600-series) — connectors


FAQs

Do RG58 and LMR-195 use the same connectors?

Usually yes (Category C). Always confirm pin ID and ferrule size against your cable datasheet, especially if your cable is stranded or double braided.

What if my cable is double braided?

Match the sub-category (e.g., B2/B3) because the required ferrule ID can differ from single-braid variants.

Can I mix semi-rigid cables within a Category?

Treat L/L2/L3/L4 as separate fit families. Semi-rigid assemblies often require formed/soldered parts and specific tooling.

Which connectors should I stock for Category C?

SMA, N-Type and TNC families are the most common. Use our Cat C sections above to filter for RG58/LMR195 parts.

Note: The Category system is a practical guide for mechanical compatibility. Always confirm exact dimensions on the connector datasheet before purchase, particularly for double-braided and semi-rigid cables.