PartsTable
Technical Data Sheet
731857-106 ✓ 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 material: ALUMINUM ALLOY 2014 OVERALL, nut_style: TUBE COUPLING, nut_height: 0.719 INCHES NOMINAL IN, thread_class: 3A A, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-142-2167, 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
731857-106
NSN: 4730-00-142-2167
FSC: 4730
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2014 OVERALL
nut_styleTUBE COUPLING
nut_height0.719 INCHES NOMINAL IN
thread_class3A A
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
thread_directionRIGHT-HAND
surface_treatmentANODIZE OVERALL
length_to_shoulder0.600 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN
width_across_flats0.684 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN
nominal_thread_size0.562 INCHES IN
end_item_identificationGRUMMAN A-10 ACFT
smallest_inside_diameter0.440 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
NSN4730-00-142-2167
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 731857-106 · 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
KEY FEATURES
MATERIAL: ALUMINUM ALLOY 2014 OVERALL
SMALLEST INSIDE DIAMETER: 0.440 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
NUT HEIGHT: 0.719 INCHES NOMINAL IN
SURFACE TREATMENT: ANODIZE OVERALL
SPECIFICATION/STANDARD DATA: 88044-AN818 GOVERNMENT STANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8525,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALALUMINUM ALLOY 2014 OVERALL
SMALLEST INSIDE DIAMETER0.440 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
NUT HEIGHT0.719 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE OVERALL
SPECIFICATION/STANDARD DATA88044-AN818 GOVERNMENT STANDARD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8525,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
END ITEM IDENTIFICATIONGRUMMAN A-10 ACFT
WIDTH ACROSS FLATS0.684 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH18
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
1-03089D06Interchangeable
interchangeable cross-reference
interchangeable
1158-06DInterchangeable
interchangeable cross-reference
interchangeable
290-6DInterchangeable
interchangeable cross-reference
interchangeable
AN816-6DInterchangeable
interchangeable cross-reference
interchangeable
213692-6DInterchangeable
interchangeable cross-reference
interchangeable
0164-10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 731857-106?
731857-106 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 731857-106?
There are 17 known substitutes for 731857-106: 1-03089D06, 1158-06D, 290-6D and 14 more. Substitute compatibility should be verified for your specific system.
Is 731857-106 still available?
731857-106 is currently cancelled.
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