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Technical Data Sheet
PartsTable / COMPONENT / MIL-T-8231
MIL-T-8231 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The TUBE,METALLIC is a the manufacturer industrial component. Key specifications include diameter: 0.625 INCHES NOMINAL IN, material: COPPER ALLOY, construction: SEAMLESS, heat_treatment: ANNEALED, wall_thickness: 0.049 INCHES NOMINAL IN, first_end_style: PLAIN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-00-278-8523, 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
MIL-T-8231
NSN: 4710-00-278-8523
FSC: 4710
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
diameter0.625 INCHES NOMINAL IN
materialCOPPER ALLOY
constructionSEAMLESS
heat_treatmentANNEALED
wall_thickness0.049 INCHES NOMINAL IN
first_end_stylePLAIN
cross-sectional_shape_stylePLAIN ROUND
measuring_method_and_length96.000 INCHES MINIMUM RANDOM AND 240.000 INCHES MAXIMUM RANDOM IN
second_end_relationship_with_first_endIDENTICAL
NSN4710-00-278-8523
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: MIL-T-8231 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CONSTRUCTION: SEAMLESS
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
HEAT TREATMENT: ANNEALED
•
DIAMETER: 0.500 INCHES NOMINAL IN
•
WALL THICKNESS: 0.035 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN ROUND
•
FIRST END STYLE: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
CONSTRUCTIONSEAMLESS
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
HEAT TREATMENTANNEALED
DIAMETER0.500 INCHES NOMINAL IN
WALL THICKNESS0.035 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
CROSS-SECTIONAL SHAPE STYLEPLAIN ROUND
FIRST END STYLEPLAIN
MEASURING METHOD AND LENGTH120.000 INCHES MINIMUM RANDOM AND 144.000 INCHES MAXIMUM RANDOM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
MILT8231Interchangeable
interchangeable cross-reference
interchangeable
ASTM B315Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-T-8231?
MIL-T-8231 is a TUBE,METALLIC.
What parts can replace MIL-T-8231?
There are 2 known substitutes for MIL-T-8231: MILT8231, ASTM B315. Substitute compatibility should be verified for your specific system.
Is MIL-T-8231 still available?
MIL-T-8231 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