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D171-300-7PC306 — PACKING NUT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

D171-300-7PC306: PACKING NUT.

The PACKING NUT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018, thread_size: 2-1/4-20, thread_class: 2A A, thread_length: 0.625 INCHES NOMINAL IN, overall_length: 1.505 INCHES NOMINAL IN, style_designator: HEXAGON, EXTERNAL THREAD, INVERTED FLARE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-040-0104, 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
D171-300-7PC306
NSN: 4730-01-040-0104
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11440 — GE STEAM POWER INC DBA GE STEAM POWER, INC DIV GENERAL ELECTRIC (USA)
SPECIFICATIONS
materialSTEEL COMP 1018
thread_size2-1/4-20
thread_class2A A
thread_length0.625 INCHES NOMINAL IN
overall_length1.505 INCHES NOMINAL IN
style_designatorHEXAGON, EXTERNAL THREAD, INVERTED FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg45.0
width_across_flats1.683 INCHES NOMINAL IN
screw_thread_locationEXTERNAL
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter1.312 INCHES NOMINAL IN
NSN4730-01-040-0104
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: D171-300-7PC306 · 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
•
WIDTH ACROSS FLATS: 1.683 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.0
•
THREAD LENGTH: 0.625 INCHES NOMINAL IN
•
STYLE DESIGNATOR: HEXAGON, EXTERNAL THREAD, INVERTED FLARE
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
THREAD SIZE: 2-1/4-20
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.683 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.0
THREAD LENGTH0.625 INCHES NOMINAL IN
STYLE DESIGNATORHEXAGON, EXTERNAL THREAD, INVERTED FLARE
OVERALL LENGTH1.505 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE2-1/4-20
SCREW THREAD SERIES DESIGNATORUN
THREAD CLASS2A A
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 1
D-171-300-9 PIEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 D171-300-7PC306?
D171-300-7PC306 is a PACKING NUT.
What parts can replace D171-300-7PC306?
There is 1 known substitute for D171-300-7PC306: D-171-300-9 PIE. Substitute compatibility should be verified for your specific system.
What is the NSN for D171-300-7PC306?
D171-300-7PC306 is cataloged in the U.S. Government catalog under NSN 4730-01-040-0104. This indicates validated use in U.S. government and defense supply chains.
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