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3724-3773-001 — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3724-3773-001: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thread_size: 0.562-18, thread_class: 2B, thread_length: 0.201 INCHES NOMINAL IN, overall_length: 0.375 INCHES NOMINAL IN, style_designator: HEXAGON, INTERNAL THREAD, SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-004-4837, 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
3724-3773-001
NSN: 4730-00-004-4837
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: K0656 — BAE SYSTEMS (OPERATIONS) LIMITED (GBR)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thread_size0.562-18
thread_class2B
thread_length0.201 INCHES NOMINAL IN
overall_length0.375 INCHES NOMINAL IN
style_designatorHEXAGON, INTERNAL THREAD, SHOULDERED
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OR CHROMATE ZINC
length_to_shoulder0.225 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
width_across_flats0.750 INCHES NOMINAL IN
screw_thread_locationINTERNAL
casehardening_indicatorNOT CASEHARDENED
NSN4730-00-004-4837
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3724-3773-001 · 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
•
LENGTH TO SHOULDER: 0.225 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
•
THREAD LENGTH: 0.201 INCHES NOMINAL IN
•
STYLE DESIGNATOR: HEXAGON, INTERNAL THREAD, SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-W-52263 MIL SPEC SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.225 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
THREAD LENGTH0.201 INCHES NOMINAL IN
STYLE DESIGNATORHEXAGON, INTERNAL THREAD, SHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OR MIL-W-52263 MIL SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE0.562-18
SCREW THREAD SERIES DESIGNATORUNF
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3724-3773-001?
3724-3773-001 is a PACKING NUT.
What is the NSN for 3724-3773-001?
3724-3773-001 is cataloged in the U.S. Government catalog under NSN 4730-00-004-4837. 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.