PartsTable
Technical Data Sheet
PartsTable / MRO / 21-340
21-340 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

The TUBE ASSEMBLY SET,METALLIC is a the manufacturer industrial component. Key specifications include overall_length: 100.0 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: SLING,NYLON 100", TEST CERT REQUIRED; 05497. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-500-0794, 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
MRO→ MRO_GENERAL→ 21-340
NSN: 6145-00-500-0794
FSC: 6145
CAGE: 77820 — AMPHENOL CORP DIV AMPHENOL AEROSPACE OPERATIONS (USA)
SPECIFICATIONS
overall_length100.0 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencySLING,NYLON 100", TEST CERT REQUIRED; 05497
NSN6145-00-500-0794
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 21-340 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONDUCTOR QUANTITY: 1
•
STRAND QUANTITY PER CONDUCTOR: 7 SINGLE CONDUCTOR
•
STRAND AWG SIZE PER CONDUCTOR: 26 SINGLE CONDUCTOR
•
VOLTAGE RATING: 3700.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
•
MATERIAL: COPPER CORE CONDUCTOR SINGLE CONDUCTOR
•
CONDUCTOR ARRANGEMENT AND QUANTITY: 1 COAXIAL
•
CONDUCTOR FORM: STRANDED SINGLE CONDUCTOR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
TECHNICAL CHARACTERISTICS (FLIS)
CONDUCTOR QUANTITY1
STRAND QUANTITY PER CONDUCTOR7 SINGLE CONDUCTOR
STRAND AWG SIZE PER CONDUCTOR26 SINGLE CONDUCTOR
VOLTAGE RATING3700.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
MATERIALCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
CONDUCTOR ARRANGEMENT AND QUANTITY1 COAXIAL
CONDUCTOR FORMSTRANDED SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
CROSS-SECTIONAL SHAPE STYLEROUND
SURFACE TREATMENTTIN CORE CONDUCTOR SINGLE CONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
MIL-DTL-17/75Upgraded Successor
successor cross-reference
successor
M17/164-00002Upgraded Successor
successor cross-reference
successor
M17/75-RG365Upgraded Successor
successor cross-reference
successor
PP15133-0Upgraded Successor
successor cross-reference
successor
B3009CG29-0Upgraded Successor
successor cross-reference
successor
M17/93-RG178-BLACKUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-340?
21-340 is a TUBE ASSEMBLY SET,METALLIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21-340?
There are 26 known substitutes for 21-340: MIL-DTL-17/75, M17/164-00002, M17/75-RG365 and 23 more. Substitute compatibility should be verified for your specific system.
Is 21-340 still available?
21-340 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026