PartsTable
Technical Data Sheet
TLS42 ✓ Verified by PartsTable
· HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

RESISTOR,VARIABLE,WIRE WOUND,PRE. Key specifications include material: PLASTIC POLYAMIDE NYLON OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.312 INCHES NOMINAL SECOND END IN, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: BARBED OR BEADED (HOSE) SECOND END, nominal_thread_size: 0.250 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-455-1139, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
TLS42
NSN: 4730-00-455-1139
FSC: 4730
CAGE: 72661 — DIXON VALVE & COUPLING COMPANY, LLC DIV DIXON FIRE (USA)
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON OVERALL
flow_angle90.0 DEGREES
leg_length1.312 INCHES NOMINAL SECOND END IN
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleBARBED OR BEADED (HOSE) SECOND END
nominal_thread_size0.250 INCHES FIRST END IN
thread_series_designatorNPT FIRST END
nominal_inside_diameter_hose_accommodated0.500 INCHES SECOND END IN
NSN4730-00-455-1139
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: TLS42 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.500 INCHES SECOND END IN
CONNECTION STYLE: PLAIN (PIPE) FIRST END
LEG LENGTH: 1.312 INCHES NOMINAL SECOND END IN
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
MATERIAL: PLASTIC POLYAMIDE NYLON OVERALL
THREAD SERIES DESIGNATOR: NPT FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.500 INCHES SECOND END IN
CONNECTION STYLEPLAIN (PIPE) FIRST END
LEG LENGTH1.312 INCHES NOMINAL SECOND END IN
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
MATERIALPLASTIC POLYAMIDE NYLON OVERALL
CONNECTION TYPEUNTHREADED EXTERNAL HOSE SECOND END
THREAD SERIES DESIGNATORNPT FIRST END
LEG LENGTH1.438 INCHES NOMINAL FIRST END IN
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEBARBED OR BEADED (HOSE) SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
3700-666Interchangeable
interchangeable cross-reference
interchangeable
479311Interchangeable
interchangeable cross-reference
interchangeable
3700-666-1Interchangeable
interchangeable cross-reference
interchangeable
6-3-106Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-2692Interchangeable
interchangeable cross-reference
interchangeable
9745-18A0440-17Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TLS42?
TLS42 is a RESISTOR,VARIABLE,WIRE WOUND,PRE.
What parts can replace TLS42?
There are 16 known substitutes for TLS42: 3700-666, 479311, 3700-666-1 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TLS42?
TLS42 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-455-1139. This indicates validated use in U.S. government and defense supply chains.
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