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272984 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

272984: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL, overall_length: 0.375 INCHES NOMINAL IN, style_designator: FLARELESS, seat_angle_in_deg: 45.000, casehardening_indicator: NOT CASEHARDENED, end_item_identification: 4940-01-689-8690. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-834-0664, 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
MRO→ MRO_GENERAL→ 272984
NSN: 4730-00-834-0664
NIINs: 008340664, 017138967
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialSTEEL
overall_length0.375 INCHES NOMINAL IN
style_designatorFLARELESS
seat_angle_in_deg45.000
casehardening_indicatorNOT CASEHARDENED
end_item_identification4940-01-689-8690
flange_outside_diameter0.500 INCHES NOMINAL IN
sleeve_outside_diameter0.406 INCHES NOMINAL IN
nondefinitive_spec/std_data14 FIGURE
specification/standard_data96906-MS51825 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
hose/tube_outside_diameter_for_which_designed0.375 INCHES NOMINAL IN
NSN4730-00-834-0664
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 272984 · 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
•
SEAT ANGLE IN DEG: 45.000
•
STYLE DESIGNATOR: FLARELESS
•
SLEEVE OUTSIDE DIAMETER: 0.406 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 96906-MS51825 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: 14 FIGURE
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG45.000
STYLE DESIGNATORFLARELESS
OVERALL LENGTH0.375 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.406 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA96906-MS51825 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA14 FIGURE
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALSTEEL
FLANGE OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.375 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 8
900594-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
J514Reference document
Same NSN cross-reference
Reference document — Secondary reference
6TUSReference document
Same NSN cross-reference
Reference document — Secondary reference
900594-6SReference document
Same NSN cross-reference
Reference document — Secondary reference
MS51825-5ZASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4730008340664Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 272984?
272984 is a ADAPTER,STRAIGHT,TUBE TO BOSS. It is classified as a MRO (MRO_GENERAL).
What parts can replace 272984?
There are 8 known substitutes for 272984: 900594-6, J514, 6TUS and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 272984?
272984 is cataloged in the U.S. Government catalog under NSN 4730-00-834-0664. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.