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 ELBOW,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.500 INCHES NOMINAL FIRST END IN, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_style: FLARELESS (TUBE) ALL ENDS. This part is cataloged in the U.S.
Government catalog under NSN 4730-00-004-6542, 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
MS21908K4
NSN:4730-00-004-6542 FSC:4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings CAGE:0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
material
STEEL COMP 316 OVERALL
flow_angle
90.0 DEGREES
leg_length
1.500 INCHES NOMINAL FIRST END IN
seat_angle
12.0 DEGREES ALL ENDS
thread_class
3A ALL ENDS A
connection_style
FLARELESS (TUBE) ALL ENDS
surface_treatment
PASSIVATE OVERALL
operating_pressure
3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size
0.438 INCHES FIRST END BULKHEAD IN
maximum_operating_temp
275.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designed
AERONAUTICAL FLUID SINGLE RESPONSE
thread_series_designator
UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD
NSN
4730-00-004-6542
COMPONENT DIAGRAM
KEY FEATURES
•
FLOW ANGLE: 90.0 DEGREES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
LEG LENGTH: 1.500 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE
90.0 DEGREES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLE
FLARELESS (TUBE) ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATION
QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED
0.250 INCHES ALL ENDS IN
OPERATING PRESSURE
3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH
1.500 INCHES NOMINAL FIRST END IN
LEG LENGTH
0.938 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE
0.438 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE
0.438 INCHES ALL ENDS IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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FREQUENTLY ASKED QUESTIONS
What is MS21908K4?
MS21908K4 is a ELBOW,TUBE.
What parts can replace MS21908K4?
There is 1 known substitute for MS21908K4: SAE-AS18280. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21908K4?
MS21908K4 is cataloged in the U.S. Government catalog under NSN 4730-00-004-6542. This indicates validated use in U.S. government and defense supply chains.
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