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AS21913 — PLUG,TUBE FITTING,THREADED

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS21913: PLUG,TUBE FITTING,THREADED.

The PLUG,TUBE FITTING,THREADED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 12.0 DEGREES, head_height: 0.203 INCHES NOMINAL IN, thread_class: 3A EXTERNAL A, overall_length: 0.640 INCHES NOMINAL IN, connection_style: FLARELESS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-081-3459, 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
AS21913
NSN: 4730-00-081-3459
NIINs: 000813459, 002028860, 002029169, 002030246, 002030247, 002036938, 002898626, 002898632, 005402231, 005557804, 005953917, 008137441, 008282718, 008439788, 009665695, 009844920, 010275818, 010642514, 011103378, 011115242, 011697644, 011924449, 011982851, 012267111, 012958544, 014109977, 014109978, 015427303, 015427314, 015427608, 015427614, 015427616, 015427624, 015427635, 015427639, 015427646, 015468266, 015468293, 015468305, 015468527, 015468549, 015476331, 015506518, 015717736
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle12.0 DEGREES
head_height0.203 INCHES NOMINAL IN
thread_class3A EXTERNAL A
overall_length0.640 INCHES NOMINAL IN
connection_styleFLARELESS
special_featuresCORROSION RESISTANT STEEL (15-5PH) WITH CADMIUM PLATING
style_designatorPLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC)
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentCADMIUM OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
nominal_thread_size0.437 INCHES EXTERNAL IN
NSN4730-00-081-3459
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS21913 · 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
•
HEAD HEIGHT: 0.359 INCHES NOMINAL IN
•
CONNECTION STYLE: INVERTED FLARE
•
STYLE DESIGNATOR: PLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 0.875 INCHES EXTERNAL IN
•
SEAT ANGLE: 12.0 DEGREES
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.359 INCHES NOMINAL IN
CONNECTION STYLEINVERTED FLARE
STYLE DESIGNATORPLUG, TUBE FITTING FLARELESS (NOTE: DRILLED HOLE IS OPTIONAL, SHOULD NOT BE CONSIDERED AS A SEPARATING CHARACTERISTIC)
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
OVERALL LENGTH0.984 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.875 INCHES EXTERNAL IN
SEAT ANGLE12.0 DEGREES
SPECIFICATION/STANDARD DATA96906-MS21913 GOVERNMENT STANDARD
SURFACE TREATMENTPASSIVATE OVERALL
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.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 3
SAE-AS18280Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS21913J10Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS21913?
AS21913 is a PLUG,TUBE FITTING,THREADED.
What parts can replace AS21913?
There are 3 known substitutes for AS21913: SAE-AS18280, MS21913J10, AS18280. Substitute compatibility should be verified for your specific system.
What is the NSN for AS21913?
AS21913 is cataloged in the U.S. Government catalog under NSN 4730-00-081-3459. This indicates validated use in U.S. government and defense supply chains.
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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.