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Technical Data Sheet
PartsTable / COMPONENT / B2-1-71
B2-1-71 ✓ 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

RESISTOR,FIXED,WIRE WOUND,INDUCT. Key specifications include diameter: 1.875 INCHES NOMINAL IN, material: STEEL, construction: SEAMLESS, wall_thickness: 0.250 INCHES NOMINAL IN, first_end_style: PLAIN, special_features: W/1500.0 PSI HYDROSTATIC TEST PRESSURE AND 4 LB 6 OZ WEIGHT PER FT LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-01-043-5252, 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
B2-1-71
NSN: 4710-01-043-5252
FSC: 4710
CAGE: 21996 — KEX PRODUCTS INC DIV OF PERFECT EQUIPMENT CORP (USA)
SPECIFICATIONS
diameter1.875 INCHES NOMINAL IN
materialSTEEL
constructionSEAMLESS
wall_thickness0.250 INCHES NOMINAL IN
first_end_stylePLAIN
special_featuresW/1500.0 PSI HYDROSTATIC TEST PRESSURE AND 4 LB 6 OZ WEIGHT PER FT LBS
operating_pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
maximum_operating_temp775.0 FAHRENHEIT DEGF
cross-sectional_shape_stylePLAIN ROUND
measuring_method_and_length26.375 INCHES NOMINAL SPECIFIC IN
nondefinitive_spec/std_dataE TYPE
specification/standard_data81349-MIL-T-20157 GOVERNMENT SPECIFICATION
NSN4710-01-043-5252
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: B2-1-71 · 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
•
MATERIAL: STEEL
•
CONSTRUCTION: SEAMLESS
•
WALL THICKNESS: 0.250 INCHES NOMINAL IN
•
DEPARTURE FROM CITED DOCUMENT: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
•
MAXIMUM OPERATING TEMP: 775.0 FAHRENHEIT DEGF
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MEASURING METHOD AND LENGTH: 26.375 INCHES NOMINAL SPECIFIC IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
CONSTRUCTIONSEAMLESS
WALL THICKNESS0.250 INCHES NOMINAL IN
DEPARTURE FROM CITED DOCUMENTQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
SPECIAL FEATURESW/1500.0 PSI HYDROSTATIC TEST PRESSURE AND 4 LB 6 OZ WEIGHT PER FT LBS
MAXIMUM OPERATING TEMP775.0 FAHRENHEIT DEGF
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MEASURING METHOD AND LENGTH26.375 INCHES NOMINAL SPECIFIC IN
CROSS-SECTIONAL SHAPE STYLEPLAIN ROUND
OPERATING PRESSURE1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
547125Interchangeable
interchangeable cross-reference
interchangeable
4382Interchangeable
interchangeable cross-reference
interchangeable
T200LInterchangeable
interchangeable cross-reference
interchangeable
N27PC438Interchangeable
interchangeable cross-reference
interchangeable
3N2PC438Interchangeable
interchangeable cross-reference
interchangeable
3N68PC438Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B2-1-71?
B2-1-71 is a RESISTOR,FIXED,WIRE WOUND,INDUCT.
What parts can replace B2-1-71?
There are 23 known substitutes for B2-1-71: 547125, 4382, T200L and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B2-1-71?
B2-1-71 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-01-043-5252. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026