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PartsTable / COMPONENT / MX-230721 PIECE
MX-230721 PIECE ✓ 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 HANDHOLE PLATE,BOILER is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL; TOP COVER 3.750 IN. BY 4.125 IN.; ONE END THREADED 1.000 IN.-8 NC-3A; 4.375 IN.

OVERALL L. A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-00-288-7934, 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
MX-230721 PIECE
NSN: 4710-00-288-7934
FSC: 4710
CAGE: 58529 — THE BABCOCK & WILCOX COMPANY DBA B & W SERVICE CO DIV B&W SERVICE COMPANY (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL; TOP COVER 3.750 IN. BY 4.125 IN.; ONE END THREADED 1.000 IN.-8 NC-3A; 4.375 IN. OVERALL L. A
NSN4710-00-288-7934
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: MX-230721 PIECE · 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
•
MEASURING METHOD AND LENGTH: 156.000 INCHES NOMINAL SPECIFIC IN
•
CROSS-SECTIONAL SHAPE STYLE: PLAIN ROUND
•
HEAT TREATMENT: ANNEALED AND NORMALIZED AND TEMPERED
•
WALL THICKNESS: 0.134 INCHES NOMINAL IN
•
DIAMETER: 1.500 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
CONSTRUCTIONSEAMLESS
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MEASURING METHOD AND LENGTH156.000 INCHES NOMINAL SPECIFIC IN
CROSS-SECTIONAL SHAPE STYLEPLAIN ROUND
HEAT TREATMENTANNEALED AND NORMALIZED AND TEMPERED
WALL THICKNESS0.134 INCHES NOMINAL IN
DIAMETER1.500 INCHES NOMINAL IN
MATERIALSTEEL
FIRST END STYLEPLAIN
NONDEFINITIVE SPEC/STD DATAE CLASS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
7000459Interchangeable
interchangeable cross-reference
interchangeable
F165-896-119Interchangeable
interchangeable cross-reference
interchangeable
NY420-929-1182Interchangeable
interchangeable cross-reference
interchangeable
MIL-T-16286Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MX-230721 PIECE?
MX-230721 PIECE is a HANDHOLE PLATE,BOILER.
What parts can replace MX-230721 PIECE?
There are 4 known substitutes for MX-230721 PIECE: 7000459, F165-896-119, NY420-929-1182 and 1 more. Substitute compatibility should be verified for your specific system.
Is MX-230721 PIECE still available?
MX-230721 PIECE 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