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1525-48A — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1525-48A: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, slot_width: 0.438 INCHES NOMINAL IN, thread_size: 3.500-16, thread_class: 2A A, thread_length: 0.500 INCHES NOMINAL IN, overall_length: 1.250 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-890-7944, 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
1525-48A
NSN: 4730-00-890-7944
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 6K4C8 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
slot_width0.438 INCHES NOMINAL IN
thread_size3.500-16
thread_class2A A
thread_length0.500 INCHES NOMINAL IN
overall_length1.250 INCHES NOMINAL IN
style_designatorROUND, EXTERNAL THREAD, INVERTED FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg45.0
length_to_shoulder0.690 INCHES NOMINAL IN
hole_or_slot_quantity6
screw_thread_locationEXTERNAL
NSN4730-00-890-7944
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1525-48A · 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: 0.690 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.0
•
HOLE OR SLOT QUANTITY: 6
•
LARGEST INSIDE DIAMETER: 2.812 INCHES NOMINAL IN
•
THREAD LENGTH: 0.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND, EXTERNAL THREAD, INVERTED FLARE
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.690 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.0
HOLE OR SLOT QUANTITY6
LARGEST INSIDE DIAMETER2.812 INCHES NOMINAL IN
THREAD LENGTH0.500 INCHES NOMINAL IN
STYLE DESIGNATORROUND, EXTERNAL THREAD, INVERTED FLARE
OVERALL LENGTH1.250 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE3.500-16
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1525-48A?
1525-48A is a PACKING NUT.
What is the NSN for 1525-48A?
1525-48A is cataloged in the U.S. Government catalog under NSN 4730-00-890-7944. 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.