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Technical Data Sheet
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1031520 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The REDUCER,PIPE is a the manufacturer industrial component. Key specifications include material: RUBBER OVERALL, body_style: HOLE MOUNTED, body_width: 0.500 INCHES NOMINAL IN, body_height: 0.500 INCHES NOMINAL IN, body_length: 1.250 INCHES NOMINAL IN, water_usage: REQUIRED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-242-4507, 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
1031520
NSN: 4730-01-242-4507
FSC: 4730
CAGE: 79470 — DANA CORP WEATHERHEAD DIV (USA)
SPECIFICATIONS
materialRUBBER OVERALL
body_styleHOLE MOUNTED
body_width0.500 INCHES NOMINAL IN
body_height0.500 INCHES NOMINAL IN
body_length1.250 INCHES NOMINAL IN
water_usageREQUIRED
groove_width0.062 INCHES NOMINAL IN
grommet_styleROUND
hole_diameter0.500 INCHES NOMINAL IN
overall_width0.688 INCHES MAXIMUM IN
physical_formCONCENTRATED LIQUID
actuator_styleRECTANGULAR
NSN4730-01-242-4507
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1031520 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
B14-4Interchangeable
interchangeable cross-reference
interchangeable
411177-139Interchangeable
interchangeable cross-reference
interchangeable
MS20659-139Interchangeable
interchangeable cross-reference
interchangeable
11304Interchangeable
interchangeable cross-reference
interchangeable
D724Interchangeable
interchangeable cross-reference
interchangeable
B107.8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1031520?
1031520 is a REDUCER,PIPE.
What parts can replace 1031520?
There are 16 known substitutes for 1031520: B14-4, 411177-139, MS20659-139 and 13 more. Substitute compatibility should be verified for your specific system.
Is 1031520 still available?
1031520 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