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FIG119-3-4 — LOCKNUT,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

FIG119-3-4: LOCKNUT,PIPE.

The LOCKNUT,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: PIPE LOCKNUT, thread_class: 2B, thread_series: NPSL, thread_direction: RIGHT-HAND, width_across_flats: 1.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-277-7876, 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
FIG119-3-4
NSN: 4730-00-277-7876
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 90146 — ACHESON MFG CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_stylePIPE LOCKNUT
thread_class2B
thread_seriesNPSL
thread_directionRIGHT-HAND
width_across_flats1.500 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES IN
packing_recess_depth0.0625 INCHES NOMINAL IN
packing_recess_diameter1.313 INCHES NOMINAL IN
thread_quantity_per_inch14
NSN4730-00-277-7876
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: FIG119-3-4 · 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: 1.500 INCHES NOMINAL IN
•
PACKING RECESS DIAMETER: 1.313 INCHES NOMINAL IN
•
THREAD SERIES: NPSL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.750 INCHES IN
•
NUT STYLE: PIPE LOCKNUT
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 14
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.500 INCHES NOMINAL IN
PACKING RECESS DIAMETER1.313 INCHES NOMINAL IN
THREAD SERIESNPSL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.750 INCHES IN
NUT STYLEPIPE LOCKNUT
THREAD CLASS2B
THREAD QUANTITY PER INCH14
MATERIALCOPPER ALLOY OVERALL
PACKING RECESS DEPTH0.0625 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
1231-3-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 FIG119-3-4?
FIG119-3-4 is a LOCKNUT,PIPE.
What parts can replace FIG119-3-4?
There is 1 known substitute for FIG119-3-4: 1231-3-4. Substitute compatibility should be verified for your specific system.
What is the NSN for FIG119-3-4?
FIG119-3-4 is cataloged in the U.S. Government catalog under NSN 4730-00-277-7876. 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.