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2021-12-16S — ADAPTER,STRAIGHT,PIPE TO TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2021-12-16S: ADAPTER,STRAIGHT,PIPE TO TUBE.

The ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_style: INVERTED FLARE (PIPE) SECOND END, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_thread_size: 0.750 INCHES SECOND END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-021-1802, 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
2021-12-16S
NSN: 4730-00-021-1802
NIINs: 000211802, 011584198
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 01276 — DANFOSS POWER SOLUTIONS II, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_styleINVERTED FLARE (PIPE) SECOND END
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES SECOND END IN
maximum_operating_temp400.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length2.010 INCHES IN
end_item_identificationGRUMMAN A-10 ACFT
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_quantity_per_inch12 FIRST END
thread_series_designatorNPTF SECOND END
NSN4730-00-021-1802
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2021-12-16S · 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 TUBE COUPLING NUT W/SLEEVE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: J514 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: INVERTED FLARE (PIPE) SECOND END
•
NOMINAL OVERALL LENGTH: 2.010 INCHES IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 TUBE COUPLING NUT W/SLEEVE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONJ514 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE INSIDE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TY 3, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE
CONNECTION STYLEINVERTED FLARE (PIPE) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OVERALL LENGTH2.010 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.750 INCHES SECOND END IN
SUBSTITUTES & CROSS-REFERENCES 7
7693GXReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5217X16X12Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS51500A16-12Reference document
Same NSN cross-reference
Reference document — Secondary reference
10086116Reference document
Same NSN cross-reference
Reference document — Informative reference only
AA67006-16-12Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
848-FS-16X12Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2021-12-16S?
2021-12-16S is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 2021-12-16S?
There are 7 known substitutes for 2021-12-16S: 7693GX, 5217X16X12, MS51500A16-12 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2021-12-16S?
2021-12-16S is cataloged in the U.S. Government catalog under NSN 4730-00-021-1802. 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.