PartsTable
Technical Data Sheet
MS21924-8 ✓ 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,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1137 OR STEEL COMP 1141 OR STEEL COMP 4130 OVERALL, seat_angle: 12.0 DEGREES FIRST END, thread_class: 3A CENTER BULKHEAD A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: FLARELESS (TUBE) FIRST END, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-541-1756, 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
MS21924-8
NSN: 4730-00-541-1756
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 1137 OR STEEL COMP 1141 OR STEEL COMP 4130 OVERALL
seat_angle12.0 DEGREES FIRST END
thread_class3A CENTER BULKHEAD A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARELESS (TUBE) FIRST END
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.750 INCHES ALL ENDS IN
nominal_overall_length2.031 INCHES IN
end_item_identification25F AIRCRAFT, AWACS, E-3A A
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) CENTER BULKHEAD
specification/standard_data96906-MS21924 GOVERNMENT STANDARD
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
NSN4730-00-541-1756
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS21924-8 · 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 THREAD SIZE: 0.750 INCHES CENTER BULKHEAD IN
THREAD CLASS: 3A CENTER BULKHEAD A
CONNECTION STYLE: FLARELESS (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST END IN
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
SURFACE TREATMENT: CADMIUM OVERALL
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
SEAT ANGLE: 12.0 DEGREES FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.750 INCHES CENTER BULKHEAD IN
THREAD CLASS3A CENTER BULKHEAD A
CONNECTION STYLEFLARELESS (TUBE) FIRST END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
SURFACE TREATMENTCADMIUM OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
SEAT ANGLE12.0 DEGREES FIRST END
THREAD CLASS3A ALL ENDS A
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
MS21904D4Interchangeable
interchangeable cross-reference
interchangeable
MIL-F-18280AInterchangeable
interchangeable cross-reference
interchangeable
MS21904-4Interchangeable
interchangeable cross-reference
interchangeable
AS21900-3Interchangeable
interchangeable cross-reference
interchangeable
MS21900-3Interchangeable
interchangeable cross-reference
interchangeable
AS21922Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21924-8?
MS21924-8 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS21924-8?
There are 11 known substitutes for MS21924-8: MS21904D4, MIL-F-18280A, MS21904-4 and 8 more. Substitute compatibility should be verified for your specific system.
Is MS21924-8 still available?
MS21924-8 is currently cancelled.
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