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403864 ✓ 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: STEEL OVERALL, special_features: SIZE = 1 5/16 ORBM X 1 5/16 JICM 90, special_test_features: MATERIAL IS PLATED STEEL, end_item_identification: NSN: 3990-01-443-8024, media_for_which_designed: HYDRAULIC FLUID SINGLE RESPONSE, part_name_assigned_by_controlling_agency: ADAPTER 1 5/16 ORBM X 1 5/16 JICM 90. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-538-3782, 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
403864
NSN: 4730-01-538-3782
FSC: 4730
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresSIZE = 1 5/16 ORBM X 1 5/16 JICM 90
special_test_featuresMATERIAL IS PLATED STEEL
end_item_identificationNSN: 3990-01-443-8024
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
part_name_assigned_by_controlling_agencyADAPTER 1 5/16 ORBM X 1 5/16 JICM 90
NSN4730-01-538-3782
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 403864 · 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
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SINGLE RESPONSE
•
MATERIAL: STEEL OVERALL
•
SPECIAL TEST FEATURES: MATERIAL IS PLATED STEEL
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSIZE = 1 5/16 ORBM X 1 5/16 JICM 90
END ITEM IDENTIFICATIONNSN: 3990-01-443-8024
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER 1 5/16 ORBM X 1 5/16 JICM 90
MATERIALSTEEL OVERALL
SPECIAL TEST FEATURESMATERIAL IS PLATED STEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
C610838Interchangeable
interchangeable cross-reference
interchangeable
94206Interchangeable
interchangeable cross-reference
interchangeable
6801-16Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 403864?
403864 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 403864?
There are 3 known substitutes for 403864: C610838, 94206, 6801-16. Substitute compatibility should be verified for your specific system.
What is the NSN for 403864?
403864 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-538-3782. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026