PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 187S
187S ✓ 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,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include vial_surface_finish: GROUND LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-250-7927, 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
187S
NSN: 4730-00-250-7927
FSC: 4730
CAGE: 70876 — BATH IRON WORKS CORPORATION (USA)
SPECIFICATIONS
vial_surface_finishGROUND LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-250-7927
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 187S · 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
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
SEAT ANGLE: 45.0 DEGREES FIRST END
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
FLOW ANGLE: 90.0 DEGREES
•
MATERIAL: COPPER ALLOY 377 OVERALL
•
OPERATING PRESSURE: 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MEDIA FOR WHICH DESIGNED: VACUUM THIRD RESPONSE
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONFEAT
SEAT ANGLE45.0 DEGREES FIRST END
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE TREATMENT RESPONSE OVERALL
FLOW ANGLE90.0 DEGREES
MATERIALCOPPER ALLOY 377 OVERALL
OPERATING PRESSURE400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MEDIA FOR WHICH DESIGNEDVACUUM THIRD RESPONSE
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
LEG LENGTH0.750 INCHES NOMINAL SECOND END IN
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT SINGLE RESPONSE DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
2039001-60Interchangeable
interchangeable cross-reference
interchangeable
A348Interchangeable
interchangeable cross-reference
interchangeable
A5007Interchangeable
interchangeable cross-reference
interchangeable
854576Interchangeable
interchangeable cross-reference
interchangeable
91A2027Interchangeable
interchangeable cross-reference
interchangeable
637899Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 187S?
187S is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 187S?
There are 31 known substitutes for 187S: 2039001-60, A348, A5007 and 28 more. Substitute compatibility should be verified for your specific system.
Is 187S still available?
187S 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