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10086121 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

10086121: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 1.030 INCHES NOMINAL THIRD END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A ALL ENDS A, connection_style: FLARED (TUBE) FIRST END, surface_treatment: CADMIUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-116-6686, 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
10086121
NSN: 4730-00-116-6686
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length1.030 INCHES NOMINAL THIRD END IN
seat_angle37.0 DEGREES FIRST END
thread_class2A ALL ENDS A
connection_styleFLARED (TUBE) FIRST END
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.438 INCHES ALL ENDS IN
thread_series_designatorUNF ALL ENDS
specification/standard_data96906-MS51529 GOVERNMENT STANDARD
furnished_items_and_quantity2 FLARED SLEEVE AND 1 LOCKNUT AND 2 SHORT COUPLING NUT AND 1 FLAT WASHER
nominal_outside_diameter_tube_accommodated0.250 INCHES SECOND END IN
surface_treatment_document_and_classificationQQ-P-416,TYPE2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-00-116-6686
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 10086121 · 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
•
FURNISHED ITEMS AND QUANTITY: 2 FLARED SLEEVE AND 1 LOCKNUT AND 2 SHORT COUPLING NUT AND 1 FLAT WASHER
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARED (TUBE) SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
LEG LENGTH: 0.890 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 FLARED SLEEVE AND 1 LOCKNUT AND 2 SHORT COUPLING NUT AND 1 FLAT WASHER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARED (TUBE) SECOND END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END IN
LEG LENGTH0.890 INCHES NOMINAL FIRST END IN
LEG LENGTH1.030 INCHES NOMINAL THIRD END IN
LEG LENGTH0.890 INCHES NOMINAL SECOND END IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 5
MS51529A4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
203003-4-4SReference document
Same NSN cross-reference
Reference document — Secondary reference
4S5BX-SReference document
Same NSN cross-reference
Reference document — Secondary reference
4730001166686Reference document
Same NSN cross-reference
Reference document — Informative reference only
MS51529B4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10086121?
10086121 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 10086121?
There are 5 known substitutes for 10086121: MS51529A4, 203003-4-4S, 4S5BX-S and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10086121?
10086121 is cataloged in the U.S. Government catalog under NSN 4730-00-116-6686. 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.