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Technical Data Sheet
PartsTable / COMPONENT / 4-6-37-2
4-6-37-2 ✓ Verified by PartsTable
Lindy · 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

Lindy Multimode fibre optic patch cables are ideal for use in telecoms and for high speed data connections, suitable for use with today's increasing demand for bandwidth.<br><br>The ceramic connectors ensure low signal loss and high reliability; the connectors are compatible with all standard fibre optic equipment. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-006-9554, 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
4-6-37-2
NSN: 4730-00-006-9554
FSC: 4730
CAGE: 59257 — JM FITTINGS, LLC DBA L & L FITTINGS MFG (USA)
SPECIFICATIONS
materialGLASS ENCLOSURE
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
outside_length72.000 INCHES NOMINAL IN
overall_length0.300 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length1.000 INCHES MINIMUM IN
connection_stylePLAIN (PIPE) SECOND END
outside_diameter0.250 INCHES NOMINAL IN
overall_diameter0.150 INCHES MAXIMUM IN
special_features3 IN A PACK IN
features_providedHERMETICALLY SEALED CASE
NSN4730-00-006-9554
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-6-37-2 · Lindy ⚠ 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 THREAD SIZE: 0.438 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 1.390 INCHES IN
•
THREAD SERIES DESIGNATOR: UNF FIRST END
•
SEAT ANGLE: 37.0 DEGREES FIRST END
•
MATERIAL: STEEL OVERALL
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.375 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
NOMINAL OVERALL LENGTH1.390 INCHES IN
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
SEAT ANGLE37.0 DEGREES FIRST END
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPTF SECOND END
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
THREAD CLASS2A FIRST END A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
1N961BInterchangeable
interchangeable cross-reference
interchangeable
1N916BInterchangeable
interchangeable cross-reference
interchangeable
46372Interchangeable
interchangeable cross-reference
interchangeable
36890-5-5-25-LPInterchangeable
interchangeable cross-reference
interchangeable
NAB72RBYInterchangeable
interchangeable cross-reference
interchangeable
22986Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-6-37-2?
4-6-37-2 is a SEMICONDUCTOR DEVICE,DIODE manufactured by Lindy.
What parts can replace 4-6-37-2?
There are 6 known substitutes for 4-6-37-2: 1N961B, 1N916B, 46372 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-6-37-2?
4-6-37-2 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-006-9554. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026