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Technical Data Sheet
PartsTable / COMPONENT / 731857-112
731857-112 ✓ 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 ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include depth: 2.000 INCHES NOMINAL IN, width: 2.750 INCHES NOMINAL IN, length: 0.305 INCHES NOMINAL IN, material: NICKEL ALLOY, body_width: 1.000 INCHES MAXIMUM IN, bore_shape: STRAIGHT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-287-0285, 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
731857-112
NSN: 4730-00-287-0285
FSC: 4730
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
depth2.000 INCHES NOMINAL IN
width2.750 INCHES NOMINAL IN
length0.305 INCHES NOMINAL IN
materialNICKEL ALLOY
body_width1.000 INCHES MAXIMUM IN
bore_shapeSTRAIGHT
cone_width1.1450 INCHES NOMINAL IN
shell_typeSOLID
body_height1.030 INCHES MAXIMUM IN
body_length0.600 INCHES MAXIMUM IN
switch_typeROTARY
thread_class3B LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-287-0285
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 731857-112 · 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 25
357-9981-000Interchangeable
interchangeable cross-reference
interchangeable
30-213Interchangeable
interchangeable cross-reference
interchangeable
030-0213-3501Interchangeable
interchangeable cross-reference
interchangeable
K420Interchangeable
interchangeable cross-reference
interchangeable
6270Interchangeable
interchangeable cross-reference
interchangeable
ME71-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 731857-112?
731857-112 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 731857-112?
There are 25 known substitutes for 731857-112: 357-9981-000, 30-213, 030-0213-3501 and 22 more. Substitute compatibility should be verified for your specific system.
Is 731857-112 still available?
731857-112 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