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Technical Data Sheet
PartsTable / MRO / TTSA-20
TTSA-20 ✓ 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 TTSA-20 is a the manufacturer industrial component. Key specifications include color: BLACK FIRST POSITION JACKET CABLE, material: PLASTIC CROSS-LINKED POLYOLEFIN FIRST POSITION JACKET CABLE, conductor_form: STRANDED ALL CONDUCTORS, voltage_rating: 300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS, special_features: EACH TWISTED PAIR CONTAINS ONE WHITE AND ONE BLACK CONDUCTOR, conductor_quantity: 40. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-202-9533, 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→ TTSA-20
NSN: 6145-01-202-9533
FSC: 6145
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
colorBLACK FIRST POSITION JACKET CABLE
materialPLASTIC CROSS-LINKED POLYOLEFIN FIRST POSITION JACKET CABLE
conductor_formSTRANDED ALL CONDUCTORS
voltage_rating300.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
special_featuresEACH TWISTED PAIR CONTAINS ONE WHITE AND ONE BLACK CONDUCTOR
conductor_quantity40
round_conductor_size22 AWG ALL CONDUCTORS
cross-sectional_shape_styleROUND
strand_awg_size_per_conductor30 ALL CONDUCTORS
strand_quantity_per_conductor7 ALL CONDUCTORS
cross_section_outside_diameter0.7860 INCHES NOMINAL IN
conductor_arrangement_and_quantity20 TWISTED PAIR
NSN6145-01-202-9533
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: TTSA-20 · 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
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
CROSS SECTION OUTSIDE DIAMETER: 0.7860 INCHES NOMINAL IN
•
COLOR: BLACK FIRST POSITION JACKET CABLE
•
STRAND AWG SIZE PER CONDUCTOR: 30 ALL CONDUCTORS
•
CONDUCTOR ARRANGEMENT AND QUANTITY: 20 TWISTED PAIR
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTMB3 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
•
CONDUCTOR FORM: STRANDED ALL CONDUCTORS
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEROUND
CROSS SECTION OUTSIDE DIAMETER0.7860 INCHES NOMINAL IN
SPECIAL FEATURESEACH TWISTED PAIR CONTAINS ONE WHITE AND ONE BLACK CONDUCTOR
COLORBLACK FIRST POSITION JACKET CABLE
STRAND AWG SIZE PER CONDUCTOR30 ALL CONDUCTORS
CONDUCTOR ARRANGEMENT AND QUANTITY20 TWISTED PAIR
MATERIAL DOCUMENT AND CLASSIFICATIONASTMB3 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
CONDUCTOR QUANTITY40
MATERIALCOPPER CORE CONDUCTOR ALL CONDUCTORS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
LSTTSA-20Upgraded Successor
successor cross-reference
successor
MIL-C-24643/23Upgraded Successor
successor cross-reference
successor
LO5091Upgraded Successor
successor cross-reference
successor
MILC915-23Upgraded Successor
successor cross-reference
successor
TTSA-30Upgraded Successor
successor cross-reference
successor
MIL-DTL-24640/23Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TTSA-20?
TTSA-20 is a TTSA-20. It is classified as a MRO (MRO_GENERAL).
What parts can replace TTSA-20?
There are 26 known substitutes for TTSA-20: LSTTSA-20, MIL-C-24643/23, LO5091 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TTSA-20?
TTSA-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-202-9533. 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