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DTJF365

Thomastik JF365 Electric Bass 5 String 36" Scale Flatwound Strings


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The Thomastik-Infeld JF365 Jazz Flat Wound is a complete medium-gauge 5-string bass guitar string set engineered specifically for 36-inch super long scale electric basses. Drawing directly from Thomastik-Infeld's legendary upright bass string heritage, this set pairs a highly pliable round steel core with a silk inlay underlay and a precision-polished nickel alloy flat ribbon outer wrap to deliver unmatched depth, organic warmth, and singing sustain.

Featuring a true flat ribbon construction, the JF365 set eliminates finger squeak and fret wear while maintaining a balanced, supple low-tension feel across all five strings. From articulate highs down to a tight, focused, and thunderous low B, this set provides effortless playability and rich acoustic resonance on extended-scale instruments.

Features

  • Complete five-string flatwound set for 36" super long scale electric bass guitars
  • Highly pliable round steel core with a protective silk inlay wrap
  • True ribbon flatwound winding made of a specialized nickel alloy
  • Ultra-smooth, polished surface eliminates finger noise and prevents fret wear
  • Warm, focused vintage tone with pronounced fundamental punch and long sustain
  • Supple low-tension design for comfortable fretting, fast attack, and clean articulation
  • Standard ball-end fittings tailored for super long scale bass bridges and tailpieces

Specs

  • Model: JF365 (DTJF365)
  • Instrument: Electric Bass Guitar
  • Series: Jazz Bass Flat Wound
  • Set Type: Complete 5-String Bass Set
  • Scale Length: Super Long Scale (36" / 915 mm)
  • Gauge: Medium
  • Core Material: Round Steel Core with Silk Inlay
  • Winding Material: Nickel Alloy Flat Ribbon
  • Number of Strings: 5
  • Total Set Tension: 86.20 kg / 190.01 lb

String Specifications

  • G String – DTJF36044: Nickel flat wound, round core, .044 gauge (1.12 mm), 19.00 kg / 41.88 lb tension
  • D String – DTJF36057: Nickel flat wound, round core, .057 gauge (1.44 mm), 19.20 kg / 42.32 lb tension
  • A String – DTJF36072: Nickel flat wound, round core, .072 gauge (1.83 mm), 16.20 kg / 35.71 lb tension
  • E String – DTJF36096: Nickel flat wound, round core, .096 gauge (2.43 mm), 16.00 kg / 35.27 lb tension
  • B String – DTJF36136: Nickel flat wound, round core, .136 gauge (3.47 mm), 15.80 kg / 34.83 lb tension