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)

12-32 Microdot Alternate. RG316, Plug
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12-32 (microdot)

Coaxial Connector, 12-32, Microdot, Plug, RG316, S-70, 12-32 Plug-RG316

(0)

Coaxial Connector, 12-32, Microdot, Plug, RG316, S-70 

Coaxial Connector

Microdot 12-32 Compatible, 

Plug (Conventional Male)

Fits RG316

Approx 4.7 mm ID

We also stock the more commonly used >10-32 microdot male connectors.

S-70 compatible – as used in some Krautkramer ultrasonic probes

Alternative to TE connectivity S-70, QC-70 Series (70 Ohm)
032-0016-0001, RF-ASMB-100 

032-0031-0001,  RF-ASMB-102
032-0079-0001, RF-ASMB

Assembly Instructions
RFShop-Other Microdot type Connectors

£1.99 - £2.49 Ex Vat
Avaibility: 20 in stock
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Coaxial Connector BNC plug, male inner pin, RG316, RG174, Crimp, RG188 CH-BP-316-0
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BNC

Coaxial Connector, BNC plug, (Conventional Male), Crimp, RG316, CH-BP-316

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Part Number: CH-BP-316

Coaxial Connector, BNC plug, (Conventional Male), Crimp, RG316, CH-BP-316

RG174, RG188

£1.76 - £2.20 Ex Vat
Avaibility: 183 in stock
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CH AJ 58a - RF Shop UK
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195 series

Connector, SMA, Jack, RG58, CH-AJ-58

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Connector, SMA, Jack, RG58, 

Part Number: CH-AJ-58, 

Coaxial Connector, 

SMA, 

Jack (Conventional Female/ Socket), 

RG58, 195 Series, 

Crimp, 

RFShopUK Other SMA/RG58 Connectors

£1.50 - £1.87 Ex Vat
Avaibility: 84 in stock (can be backordered)
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4.3 Plug 400
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COAXIAL CABLE CONNECTORS

Connector, 4.3/10 Plug, L400 (RG213, RG214, RG393), CH-4.3P-400

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Connector, 4.3/10 Plug, L400 (RG213, RG214, RG393)

Coaxial Connector 

4.3/10

Plug (Conventional Male),

L400

RG213, RG214, RG393 (Inner pin requires Soldering) 

Crimp, 

Part Number: CH-4.3P-400

 

Other 4.3 Connectors RFShopUK

£9.20 - £11.50 Ex Vat
Avaibility: 66 in stock
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CH RTJ 58 BH - RF Shop UK
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COAXIAL CABLE CONNECTORS

RP-TNC Jack, (Male Pin), Reverse Polarity, Bulkhead, Crimp, Fits RG58, LMR200, LMR195, CH-RTJ-58-BH

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RP-TNC Jack, (Male Pin), Reverse Polarity, Bulkhead, Crimp, Fits RG58, LMR195, LMR200

Part Number: CH-RTJ-58-BH

£1.99 - £2.49 Ex Vat
Avaibility: 78 in stock
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N3200B1A-LDF4 FSJ4-50B.RFF 1/2"-5 Cable-0
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COAXIAL CABLE CONNECTORS

N3200B1A-LDF4 FSJ4-50B.RFF 1/2″-5 Cable

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Part Number: N3200B1A-LDF4 , DATASHEET

£8.73 - £10.91 Ex Vat
Avaibility: 9 in stock (can be backordered)
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MHV3100-0058, MHV connector male pin, RG58-0
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COAXIAL CABLE CONNECTORS

Coaxial Connector, MHV Plug, RG58, MHV3100-0058

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Coaxial Connector, MHV Plug, RG58, 

Part Number: MHV3100-0058, 

Coaxial Connector, 

MHV, 

Plug (Conventional Male),

RG58, 

Crimp, 

DATASHEET – MHV3100-0058

RFShopUK – Other MHV Products

£7.41 - £9.26 Ex Vat
Avaibility: 78 in stock (can be backordered)
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10-32 Microdot, Jack, RG316, Bulkhead, Connector
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10-32 Microdot

Connector, 10-32 Jack, Microdot, RG316, 10-32Jack-RG316-BH

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Connector, 10-32 Jack, Microdot, RG316, 

Part Number: 10-32Jack-RG316-BH, 

Coaxial Connector, 

10-32 (Microdot Equivalent), 

Jack (Conventional Female), 

Bulkhead, 

RG316, 

RFShopUK- Other Microdot Equivalent Products

RFShopUK-RG316 Cable

£2.82 - £3.53 Ex Vat
Avaibility: 175 in stock
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Coaxial, N connector Plug, N male, fits LMR400, Crimp, CH-NP-400-0
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400 series

Coaxial, N connector Plug, N male, fits LMR400, Crimp, CH-NP-400

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Coaxial, N connector Plug, N male, fits LMR400, Crimp, CH-NP-400

£2.20 - £2.75 Ex Vat
Avaibility: 793 in stock
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SMB8501-0000-0
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Bulkhead

SMB Jack (Conventional Female), Solder, Bulkhead, SMB8501-0000

(0)

Part Number: SMB8501-0000

SMB Jack (Conventional Female), Solder, Bulkhead, SMB8501-0000

DATASHEET

£1.78 - £2.22 Ex Vat
Avaibility: 20 in stock (can be backordered)
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SMA8100-0058, SMA Connector, RG58, LMR195,conventional fem pin-0
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COAXIAL CABLE CONNECTORS

Connector, SMA Jack, Crimp, RG58, (RG223 with Ferrule-223), SMA8100-0058

(0)

Connector, SMA Jack (Conventional Female), Crimp, RG58, (RG223 with additional Ferrule-223)

Part Number: SMA8100-0058

DATASHEET-SMA8100-0058

FERRULE-CH-F-0223

£2.45 - £3.06 Ex Vat
Avaibility: 235 in stock
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SMA3100-0058
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195 series

Connector, SMA Plug, RG58, LMR195, (RG223 with Ferrule -223), SMA3100-0058

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Connector, SMA Plug, Crimp, (Conventional Male), RG58, LMR195, (RG223 with additional Ferrule-223)

Part Number: SMA3100-0058

DATASHEET-SMA3100-0058

Ferrule-CH-F-0223

£2.01 - £2.51 Ex Vat
Avaibility: 6 in stock (can be backordered)
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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.