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Product

MIL-DTL-17 50 Ω & 75 Ω RF Coaxial CablesMIL-DTL-17 · M17/28-RG05850 Ω ± 2 Ω · Ø 4.95 mm19×0.18 mm Tinned Cu · 66% VoP

RG-58 Coaxial CableMIL-DTL-17 M17/28-RG058 (RG-58C/U) 50 Ω ± 2 Ω 19×0.18 mm tinned Cu + PE Ø 4.95 mm RF

RG-58 Coaxial Cable (MIL-DTL-17 M17/28-RG058 / RG-58C/U) is the industry-standard 50 Ω ± 2 Ω flexible RF coaxial cable featuring a Ø 0.90 mm (19×0.18 mm, 20 AWG) stranded tinned copper centre conductor, Ø 2.95 mm solid polyethylene (PE) dielectric (101

Low-EMC design
EMC screen
Oil-resistant
Ozone, UV & moisture
Order designation
RG-58C/U Halogen-Free LSZH (SHF1) 50 Ω
Outer Ø ≈
5.0 mm
Copper weight
19 kg/km
Total weight ≈
40 kg/km
Min. bend R (fixed)
25 mm
All sizes (5)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Impedance Z0
50 Ω ± 2 Ω
MIL-DTL-17 M17/28-RG058 (RG-58C/U)
Outer diameter
4.95 mm ± 0.10
Standard BNC / TNC / SMA / N crimp
Centre conductor
19 × 0.18 mm
Stranded tinned Cu (Ø 0.90 mm)
Capacitance
101 pF / m
Solid PE dielectric (Ø 2.95 mm)
Velocity (VoP)
66 % (0.66 c)
Delay 5.05 ns/m · cutoff 1 GHz+
Operating V
1.9 kV RMS
5.0 kV RMS dielectric test

Typical values for this cable type, based on MIL-DTL-17 (M17/28-RG058 / RG-58C/U / M17/183-00001) — confirmed in the datasheet and quotation for your order.

Application fit

Is RG-58 right for your machine?

Used across industrial wireless telemetry (433/868/915 MHz ISM, VHF/UHF radio), GNSS/GPS timing antennas, laboratory oscilloscope/signal-generator BNC test leads, and marine AIS/VHF antenna jumpers.

Fixed installation

Suitable

Routes cleanly inside RF cabinets, antenna risers, and wireless gateway enclosures up to 1 GHz.

Switchgear & control cabinet wiring

Suitable

19×0.18 mm stranded tinned copper centre conductor resists breakage on laboratory BNC patch cords.

Immersion & wet locations

Suitable

Non-contaminating UV-black Type IIA PVC, marine SHF1 LSZH, and PUR jackets available for outdoor masts.

Energy chain / drag chain

With conditions

PUR jacket version handles occasional flexing; avoid tight high-speed drag chains.

RG-142
Typical machinesIndustrial ISM (433/868/915 MHz) & LoRaMarine VHF, AIS & GPS/GNSS antennasTest & measurement BNC/SMA jumpersSCADA radio & cellular cabinet pigtails

Construction

Layer by layer

Centre conductor: 19×0.18 mm (Ø 0.90 mm, 0.48 mm², 20 AWG) stranded tinned copper (RG-58C/U) or Ø 0.81 mm solid bare copper (RG-58A/U).

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
119-strand tinned copper centre conductor19 × 0.18 mm (Ø 0.90 mm, 20 AWG) annealed tinned copper per MIL-DTL-17 (RG-58C/U)MIL-DTL-17 M17/28-RG058
2Solid polyethylene (PE) dielectricLow-loss solid virgin polyethylene extruded to Ø 2.95 mm ± 0.10 mm (εr = 2.29)MIL-DTL-17 Type A-1
395 % tinned copper outer shieldTinned copper wire braid (36 AWG strands, optical coverage ≥ 95 %, Ø 3.60 mm)MIL-DTL-17
4Outer jacket (Ø 4.95 mm)Black non-contaminating PVC Type IIA (MIL-DTL-17), halogen-free LSZH (SHF1), orMIL-DTL-17 Type IIA

RG-58C/U (M17/28-RG058) Stranded Tinned Cu

19×0.18 mm stranded tinned copper + solid PE + 95 % tinned Cu braid + PVC IIA, LSZH, or PUR jacket.

RG-58 LMR-195 / Low-Loss Foil+Braid Equivalent

Drop-in Ø 4.95 mm 50 Ω low-loss gas-injected foam-PE + Al/PET foil + tinned Cu braid (80 % VoP) for 2.4/5.8

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on MIL-DTL-17 (M17/28-RG058 / RG-58C/U / M17/183-00001). Values for your order are confirmed in the datasheet and quotation.

Electrical

Characteristic impedance Z0
50 Ω ± 2 Ω
Mutual capacitance
101 pF/m (30.8 pF/ft)
Velocity of propagation (VoP)
66 % (0.66 c) · time delay 5.05 ns/m
Attenuation (50 / 100 / 400 / 1000
10.5 / 16.1 / 34.5 / 60.0 dB/100m
Max. DC resistance @ 20 °C
Centre: ≤ 38.5 Ω/km · Outer braid: ≤ 14.2
Max. operating / test voltage
1,900 V RMS working · 5,000 V RMS

Thermal

Operating temperature range
-40 °C to +85 °C (PVC Type IIA / LSZH / PUR)
Max. RF power @ 40 °C (100 / 400
300 W / 135 W / 78 W CW

Mechanical

Nominal dimensions (Core / PE
0.90 mm / 2.95 mm / 4.95 mm ± 0.10 mm
Min. bending radius
5 × D (25 mm) static · 10 × D (50 mm)

Resistance

UV & non-contaminating jacket
MIL-DTL-17 Type IIA non-migrating
Flame & halogen-free options
IEC 60332-1-2 · UL VW-1 · IEC 60754 LSZH

Reference standards

Primary specification
MIL-DTL-17 / M17/28-RG058 (RG-58C/U) &
Connector group
Standard Group B / Crimp .195-inch (BNC

Identification

Dielectric colour
Natural translucent polyethylene
Outer jacket colour
RAL 9005 Matte Black (White or Grey on

Sizes

5 standard configurations (RG-58)

Nominal dimensions, copper weights, impedance and transmission parameters for RG-58 per MIL-DTL-17 (M17/28-RG058 / RG-58C/U / M17/183-00001).

Dimensions & weights
Order designationConfigurationConductor sizeOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		Min. bend R
fixed mm		Enquiry
Standard RG-58 configurations
RG-58C/U (M17/28-RG058) PVC Type IIA 50 Ω19×0.18 tinned Cu + PE (RG-58C/U)0.48 mm² (20 AWG)5.0193825
RG-58C/U Halogen-Free LSZH (SHF1) 50 Ω19×0.18 tinned Cu + PE (LSZH)0.48 mm² (20 AWG)5.0194025
RG-58C/U Industrial Flex PUR 50 Ω19×0.18 tinned Cu + PE (PUR)0.48 mm² (20 AWG)5.0193725
RG-58A/U Solid Bare Cu 1×0.81 mm 50 Ω1×0.81 solid Cu + PE (RG-58A/U)0.52 mm² (20 AWG)5.0193725
RG-58 Low-Loss Foil+Braid Foam-PE (195-Series) 50 Ω1×0.94 Cu + Foam PE + Foil/Braid0.69 mm² (19 AWG)5.0213525
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Outer diameters and weights are nominal factory values subject to ±5 % manufacturing tolerance per MIL-DTL-17 (M17/28-RG058 / RG-58C/U / M17/183-00001).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
TDR impedance & VNA return loss / VSWR (DC–1 GHz)Z0 = 50 ± 2 Ω; VSWR ≤ 1.25:1 up to 1 GHz100 % of reels
5.0 kV RMS dielectric withstand & capacitance5,000 V RMS without breakdown; 101 ± 3 pF/m100 % of reels
Sample tests
Attenuation sweep (50 / 100 / 400 / 1000 MHz)Within MIL-DTL-17 M17/28-RG058 limitsPer production batch
Type IIA non-contaminating jacket aging testZero plasticizer migration into PE dielectric at +85 °CType approval

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

MIL-DTL-17 (M17/28-RG058)IEC 60096 / EN 50117CE / RoHS / REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX MIL-DTL-17 M17/28-RG058 RG-58C/U
Delivery form
Non-returnable plywood reels or export drums
Standard reel lengths
100 m · 305 m · 500 m · 1000 m
MOQ
100 m (stock variants) · 500 m (custom)
Lead time
2–3 weeks ex-works
Incoterms
EXW, FOB, CIF, DAP

Technical documents

Downloads

PDFRG-58 Coaxial Cable – technical datasheet5 sizes · construction, technical data, approvalsXLSXRG-58 spec data (Excel)All 5 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What is the difference between RG-58C/U, RG-58A/U, and plain RG-58/U?
Plain RG-58/U uses a solid bare copper centre conductor (Ø 0.81 mm). RG-58A/U replaces the solid wire with a 19-strand bare copper conductor for flexibility. RG-58C/U (MIL-DTL-17 M17/28-RG058) upgrades to a 19×0.18 mm stranded tinned copper centre conductor, a ≥ 95 % tinned copper braid, and a non-contaminating Type IIA jacket.
Why does MIL-DTL-17 specify a 'Type IIA non-contaminating' PVC jacket on RG-58C/U?
Standard commercial PVC plasticizers slowly migrate into the underlying polyethylene dielectric over time, raising the dielectric loss tangent and causing high-frequency RF attenuation to climb after a few years in service. A Type IIA non-contaminating jacket prevents plasticizer migration so RF insertion loss remains stable.
When should I upgrade from RG-58C/U to RG-142 in a Ø 4.95 mm connector envelope?
Both RG-58C/U and RG-142 have the exact same Ø 2.95 mm dielectric and Ø 4.95 mm outer diameter. Step up to RG-142 whenever ambient temperature exceeds +85 °C (up to +200 °C), frequency exceeds 1 GHz (up to 12.4 GHz), or double silver-plated braids (≥ 90 dB shielding) are needed.
Can RG-58 (50 Ω) be substituted for RG-59 or RG-179 (75 Ω) on video or SDI circuits?
No. Using a 50 Ω RG-58 cable on a 75 Ω video, coax-control, or MADI/BNC interface creates a 1.5:1 VSWR impedance mismatch at every connector, causing ghosting reflections and bit errors. For 75 Ω applications specify RG-179 or RG-59. Each production reel undergoes 100 % characteristic impedance verification, mutual capacitance and DC loop resistance testing, and dielectric spark/withstand inspection before dispatch with an EN 10204 3.1 certificate.

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RG-58 Coaxial Cable

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