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221-12 — CONNECTOR,PLUG,ELECTRICAL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

221-12: CONNECTOR,PLUG,ELECTRICAL.

The CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include filter: NOT INCLUDED, material: STEEL COMP 301 OR STEEL COMP 302, body_type: CORED, head_type: SOLID, body_style: STRAIGHT SHAPE, EXTERNAL COUPLING W/BACKSHELL, shell_type: SOLID. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-221-2137, 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
221-12
NSN: 4730-00-221-2137
NIINs: 002212137, 002889870, 003264608, 003595696, 003792449, 004492634, 004999689, 008018696, 011278680, 011513379, 012073961, 012603525
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
filterNOT INCLUDED
materialSTEEL COMP 301 OR STEEL COMP 302
body_typeCORED
head_typeSOLID
body_styleSTRAIGHT SHAPE, EXTERNAL COUPLING W/BACKSHELL
shell_typeSOLID
head_height0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
temp_rating-40.0 FAHRENHEIT MINIMUM AND 200.0 FAHRENHEIT MINIMUM DEGF
thread_class2A AND 2B A
overall_width1.095 INCHES MAXIMUM IN
physical_formLIQUID
terminal_typeSOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING
NSN4730-00-221-2137
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 221-12 · 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 TYPE: SOLID
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.250 INCHES IN
•
CONNECTION STYLE: PLAIN
•
DRIVE END STYLE: RAISED SQUARE
•
OPERATING PRESSURE: 3000.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
NOMINAL THREAD SIZE: 0.250 INCHES EXTERNAL IN
•
SPECIFICATION/STANDARD DATA: 81343-AS4863 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS
HEAD TYPESOLID
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.250 INCHES IN
CONNECTION STYLEPLAIN
DRIVE END STYLERAISED SQUARE
OPERATING PRESSURE3000.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
THREAD DIRECTIONRIGHT-HAND EXTERNAL
NOMINAL THREAD SIZE0.250 INCHES EXTERNAL IN
SPECIFICATION/STANDARD DATA81343-AS4863 GOVERNMENT STANDARD
SPECIAL FEATURESGRUMMAN AEROSPACE A-10 AIRCRAFT
SURFACE TREATMENTCADMIUM OVERALL
SUBSTITUTES & CROSS-REFERENCES 9
MS20913-2SReference document
Same NSN cross-reference
Reference document — Secondary reference
1459-257Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS4842Reference document
Same NSN cross-reference
Reference document — Secondary reference
1/4SQHDPPReference document
Same NSN cross-reference
Reference document — Secondary reference
1303564Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
25370Reference 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 221-12?
221-12 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 221-12?
There are 9 known substitutes for 221-12: MS20913-2S, 1459-257, AS4842 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 221-12?
221-12 is cataloged in the U.S. Government catalog under NSN 4730-00-221-2137. 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.