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Technical Data Sheet
PartsTable / COMPONENT / 501-137
501-137 ✓ 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

OVEN,ELECTRICAL-ELECTRONIC COMPO. Key specifications include material: STEEL OVERALL, body_width: 5.600 INCHES NOMINAL IN, leg_length: 0.370 INCHES NOMINAL ALL ENDS IN, seat_angle: 37.0 DEGREES FIRST END, temp_rating: -65.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF, thread_class: 3B FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-045-9991, 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
501-137
NSN: 4720-00-045-9991
FSC: 4720
CAGE: 44940 — CUMMINS POWER GENERATION INC. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_width5.600 INCHES NOMINAL IN
leg_length0.370 INCHES NOMINAL ALL ENDS IN
seat_angle37.0 DEGREES FIRST END
temp_rating-65.0 FAHRENHEIT AND 250.0 FAHRENHEIT SINGLE RESPONSE DEGF
thread_class3B FIRST END
overall_depth6.000 INCHES NOMINAL IN
vacuum_in_torr50.8
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
inside_diameter0.250 INCHES NOMINAL IN
connection_stylePLAIN (PIPE) ALL ENDS
outside_diameter0.578 INCHES NOMINAL IN
NSN4720-00-045-9991
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 501-137 · 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
•
SPECIFICATION/STANDARD DATA: 96906-MS28741 GOVERNMENT STANDARD
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
•
INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.578 INCHES NOMINAL IN
•
CONNECTION STYLE: SWIVEL NUT FLARE FIRST END
•
MINIMUM INSIDE BENDING RADIUS: 3.375 INCHES IN
•
INSIDE SURFACE CONDITION: SMOOTH
•
LAYER COMPOSITION AND LOCATION: 2ND LAYER BRAIDED CORROSION RESISTANT STEEL WIRE AND OUTER LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD AND 1ST LAYER BRAIDED COTTON CORD
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA96906-MS28741 GOVERNMENT STANDARD
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
INSIDE DIAMETER0.250 INCHES NOMINAL IN
OUTSIDE DIAMETER0.578 INCHES NOMINAL IN
CONNECTION STYLESWIVEL NUT FLARE FIRST END
MINIMUM INSIDE BENDING RADIUS3.375 INCHES IN
INSIDE SURFACE CONDITIONSMOOTH
LAYER COMPOSITION AND LOCATION2ND LAYER BRAIDED CORROSION RESISTANT STEEL WIRE AND OUTER LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD AND 1ST LAYER BRAIDED COTTON CORD
SEAT ANGLE37.0 DEGREES FIRST END
MEASURING METHOD AND LENGTH8.000 INCHES NOMINAL WORKING IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
501137Interchangeable
interchangeable cross-reference
interchangeable
78175Interchangeable
interchangeable cross-reference
interchangeable
A733XS-97CFGInterchangeable
interchangeable cross-reference
interchangeable
A48298-87Interchangeable
Same NIIN cross-reference
interchangeable
MS28741-5-0080Interchangeable
Same NIIN cross-reference
interchangeable
MIL-DTL-8795Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 501-137?
501-137 is a OVEN,ELECTRICAL-ELECTRONIC COMPO.
What parts can replace 501-137?
There are 7 known substitutes for 501-137: 501137, 78175, A733XS-97CFG and 4 more. Substitute compatibility should be verified for your specific system.
Is 501-137 still available?
501-137 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