PartsTable
Technical Data Sheet
Download PDF

66-7681 — RING,WEARING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

66-7681: RING,WEARING.

The RING,WEARING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, leg_length: 2.625 INCHES NOMINAL FIRST END IN, bearing_type: ANNULAR BALL, REMOVABLE, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: DOUBLE JOINT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-434-4963, 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
66-7681
NSN: 4730-00-434-4963
NIINs: 004344963, 011622653
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
leg_length2.625 INCHES NOMINAL FIRST END IN
bearing_typeANNULAR BALL, REMOVABLE
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorDOUBLE JOINT
unable_to_decodeUNABLE TO DECODE
operating_pressure1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.375 INCHES SECOND END IN
thread_series_designatorNPT ALL ENDS
NSN4730-00-434-4963
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 66-7681 · 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
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: DOUBLE JOINT
•
OPERATING PRESSURE: 1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
LEG LENGTH: 2.625 INCHES NOMINAL FIRST END IN
•
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORDOUBLE JOINT
OPERATING PRESSURE1000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH2.625 INCHES NOMINAL FIRST END IN
LEG LENGTH2.625 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
BEARING TYPEANNULAR BALL, REMOVABLE
UNABLE TO DECODEUNABLE TO DECODE
SUBSTITUTES & CROSS-REFERENCES 1
R251D13Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 66-7681?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 66-7681?
66-7681 is a RING,WEARING.
What parts can replace 66-7681?
There is 1 known substitute for 66-7681: R251D13. Substitute compatibility should be verified for your specific system.
What is the NSN for 66-7681?
66-7681 is cataloged in the U.S. Government catalog under NSN 4730-00-434-4963. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 66-7681