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217691N — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

217691N: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 345 OR COPPER ALLOY 360 OVERALL, thread_class: 2A FIRST END A, connection_style: COMPRESSION (TUBE) FIRST END, operating_pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_thread_size: 0.500 INCHES SECOND END IN, seat_nominal_radius: 0.050 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-126-8445, 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
217691N
NSN: 4730-00-126-8445
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 06853 — BENDIX COMMERCIAL VEHICLE SYSTEMS LLC DBA BENDIX COMMERCIAL VEHICLE SYSTEMS (USA)
SPECIFICATIONS
materialCOPPER ALLOY 345 OR COPPER ALLOY 360 OVERALL
thread_class2A FIRST END A
connection_styleCOMPRESSION (TUBE) FIRST END
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.500 INCHES SECOND END IN
seat_nominal_radius0.050 INCHES FIRST END IN
maximum_operating_temp-65.0 CELSIUS FIRST RESPONSE DEGC
nominal_overall_length1.510 INCHES IN
end_item_identification2420-66-148-7692, HMEE (HIGH MOBILITY ENGINEER EXCAVATOR)
media_for_which_designedAIR SINGLE RESPONSE
thread_quantity_per_inch12 FIRST END
thread_series_designatorNPT SECOND END
NSN4730-00-126-8445
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 217691N · 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: 1 SHORT COUPLING NUT
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.500 INCHES SECOND END IN
•
CONNECTION STYLE: COMPRESSION (TUBE) FIRST END
•
SEAT NOMINAL RADIUS: 0.050 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 1.510 INCHES IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.688 INCHES FIRST END IN
•
OPERATING PRESSURE: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 SHORT COUPLING NUT
NOMINAL PIPE SIZE ACCOMMODATED0.500 INCHES SECOND END IN
CONNECTION STYLECOMPRESSION (TUBE) FIRST END
CONNECTION STYLEPLAIN (PIPE) SECOND END
SEAT NOMINAL RADIUS0.050 INCHES FIRST END IN
NOMINAL OVERALL LENGTH1.510 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.688 INCHES FIRST END IN
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
REDUCED PASSAGE NOMINAL INSIDE DIAMETER0.406 INCHES FIRST END IN
NOMINAL THREAD SIZE0.687 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 7
W17691Reference document
Same NSN cross-reference
Reference document — Secondary reference
52766Reference document
Same NSN cross-reference
Reference document — Secondary reference
41X321Reference document
Same NSN cross-reference
Reference document — Secondary reference
217691Reference document
Same NSN cross-reference
Reference document — Secondary reference
415934Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
468-F-08X08Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 217691N?
217691N is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 217691N?
There are 7 known substitutes for 217691N: W17691, 52766, 41X321 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 217691N?
217691N is cataloged in the U.S. Government catalog under NSN 4730-00-126-8445. 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.