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Technical Data Sheet
PartsTable / MRO / 8-403
8-403 ✓ Verified by PartsTable
3M · 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

- Works in demanding conditions and retains flexibility in autoclave conditions in temperatures ranging from -60°F (-50°C) to 350°F (177°C)<br>- Silicone adhesive provides clean removal from a variety of surfaces<br>- Chemical resistant adhesive and backing provides durability in difficult environments, such as anodization<br>- Thicker version of 3M™ Polyester Tape 8402, providing more durability and longer wear<br>- Ideal for splicing applications on surfaces that are difficult to adhere too, such as silicone coated papers and films<br>- Translucent green backing is easily identifiable for splicing applications<br>- Meets several aerospace specifications<br>For anodizing, composite bonding and splicing, use 3M™ Polyester Tape 8403. This translucent green tinted tape is coated with a silicone adhesive that bonds well on difficult surfaces, including silicone coated papers and films. It is chemical resistant and performs under a wide range of temperatures and environments.

This tape is This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-007-7155, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO→ MRO_GENERAL→ 8-403
NSN: 6145-01-007-7155
FSC: 6145
CAGE: 16428 — BELDEN WIRE & CABLE COMPANY LLC DBA BELDEN CDT ELECTRONICS DIVISION (USA)
SPECIFICATIONS
shapeHORIZONTAL RECTANGULAR
width16.5 INCHES NOMINAL IN
length21.5 INCHES NOMINAL IN
materialPLASTIC FOAM CUSHIONING
thickness2.0 INCHES NOMINAL IN
end_item_identificationNIIN 016027443
part_name_assigned_by_controlling_agencyCONVOLUTED FOAM
NSN6145-01-007-7155
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: 8-403 · 3M ⚠ 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
•
TEMP RATING: 80.0 CELSIUS DEGC
•
CROSS SECTION OUTSIDE DIAMETER: 0.244 INCHES NOMINAL IN
•
VOLTAGE RATING: 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
•
STRAND QUANTITY PER CONDUCTOR: 26 ALL CONDUCTORS
•
ROUND CONDUCTOR SIZE: 20 AWG ALL CONDUCTORS
•
SURFACE TREATMENT: TIN CORE CONDUCTOR ALL CONDUCTORS
•
STRAND AWG SIZE PER CONDUCTOR: 34 ALL CONDUCTORS
•
MATERIAL: PLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING80.0 CELSIUS DEGC
CROSS SECTION OUTSIDE DIAMETER0.244 INCHES NOMINAL IN
VOLTAGE RATING600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
STRAND QUANTITY PER CONDUCTOR26 ALL CONDUCTORS
ROUND CONDUCTOR SIZE20 AWG ALL CONDUCTORS
SURFACE TREATMENTTIN CORE CONDUCTOR ALL CONDUCTORS
STRAND AWG SIZE PER CONDUCTOR34 ALL CONDUCTORS
MATERIALPLASTIC POLYETHYLENE TEREPHTHALATE (PET)(POLYESTER) FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
COLORCHROME FIRST POSITION JACKET CABLE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
8403Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-1/1660Interchangeable
interchangeable cross-reference
interchangeable
MILE1-1660Interchangeable
interchangeable cross-reference
interchangeable
BA-403/UInterchangeable
interchangeable cross-reference
interchangeable
JANB18Interchangeable
interchangeable cross-reference
interchangeable
MIL-B-18/81Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8-403?
8-403 is a BATTERY,NONRECHARGEABLE manufactured by 3M. It is classified as a MRO (MRO_GENERAL).
What parts can replace 8-403?
There are 17 known substitutes for 8-403: 8403, MIL-PRF-1/1660, MILE1-1660 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 8-403?
8-403 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-01-007-7155. 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