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Technical Data Sheet
PartsTable / COMPONENT / 4908539-2
4908539-2 ✓ 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 BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1137 OR STEEL COMP 1141 OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: RECESSED HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-2973, 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
4908539-2
NSN: 4730-00-278-2973
FSC: 4730
CAGE: 0AHU0 — KALMAR AC INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1137 OR STEEL COMP 1141 OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleRECESSED HEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentOXIDE OVERALL
nominal_thread_size0.125 INCHES EXTERNAL IN
thread_series_designatorANPT EXTERNAL
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
nominal_pipe_size_for_which_designed0.125 INCHES IN
NSN4730-00-278-2973
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4908539-2 · 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
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.125 INCHES IN
•
BODY TYPE: SOLID
•
CONNECTION STYLE: PLAIN
•
SURFACE TREATMENT: OXIDE OVERALL
•
NOMINAL THREAD SIZE: 0.125 INCHES EXTERNAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: ANPT EXTERNAL
•
DRIVE END STYLE: RECESSED HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.125 INCHES IN
BODY TYPESOLID
CONNECTION STYLEPLAIN
SURFACE TREATMENTOXIDE OVERALL
NOMINAL THREAD SIZE0.125 INCHES EXTERNAL IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORANPT EXTERNAL
DRIVE END STYLERECESSED HEXAGON
MATERIALSTEEL COMP 1137 OR STEEL COMP 1141 OVERALL
THREAD DIRECTIONRIGHT-HAND EXTERNAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
9978032Interchangeable
interchangeable cross-reference
interchangeable
239244Interchangeable
interchangeable cross-reference
interchangeable
C0505027400Interchangeable
interchangeable cross-reference
interchangeable
584G9-002Interchangeable
interchangeable cross-reference
interchangeable
1-8HHPSInterchangeable
interchangeable cross-reference
interchangeable
444613Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4908539-2?
4908539-2 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace 4908539-2?
There are 17 known substitutes for 4908539-2: 9978032, 239244, C0505027400 and 14 more. Substitute compatibility should be verified for your specific system.
Is 4908539-2 still available?
4908539-2 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