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211-A-0009-3 ✓ 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 PACKING NUT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, thread_size: 0.750-16, thread_class: 2B, thread_length: 0.313 INCHES NOMINAL IN, overall_length: 0.625 INCHES NOMINAL IN, special_features: FURNISHED WITH FELT AND SCRAPER RING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-971-1545, 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
211-A-0009-3
NSN: 4730-00-971-1545
FSC: 4730
CAGE: 04638 — TRANSDIGM INC (USA)
SPECIFICATIONS
materialSTEEL COMP 303
thread_size0.750-16
thread_class2B
thread_length0.313 INCHES NOMINAL IN
overall_length0.625 INCHES NOMINAL IN
special_featuresFURNISHED WITH FELT AND SCRAPER RING
style_designatorHEXAGON, INTERNAL THREAD, SHOULDERED
thread_directionRIGHT-HAND
length_to_shoulder0.313 INCHES NOMINAL IN
width_across_flats0.813 INCHES NOMINAL IN
screw_thread_locationINTERNAL
casehardening_indicatorNOT CASEHARDENED
NSN4730-00-971-1545
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 211-A-0009-3 · 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
•
NUT HEIGHT: 1.130 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 1.000 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
THREAD QUANTITY PER INCH: 16
•
THREAD DIRECTION: RIGHT-HAND
•
NUT STYLE: PIPE SEAL NUT
•
THREAD SERIES: UNF
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT1.130 INCHES NOMINAL IN
WIDTH ACROSS FLATS1.000 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.750 INCHES IN
THREAD QUANTITY PER INCH16
THREAD DIRECTIONRIGHT-HAND
NUT STYLEPIPE SEAL NUT
THREAD SERIESUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
1239N2Interchangeable
interchangeable cross-reference
interchangeable
2146061Interchangeable
interchangeable cross-reference
interchangeable
281791Interchangeable
interchangeable cross-reference
interchangeable
1407-35Interchangeable
interchangeable cross-reference
interchangeable
2311-0158Interchangeable
interchangeable cross-reference
interchangeable
1407-40Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 211-A-0009-3?
211-A-0009-3 is a PACKING NUT.
What parts can replace 211-A-0009-3?
There are 15 known substitutes for 211-A-0009-3: 1239N2, 2146061, 281791 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 211-A-0009-3?
211-A-0009-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-971-1545. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026