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Technical Data Sheet

1231-3/8 — LOCKNUT,PIPE

✓ Government record, cited
Hama · HOSE FITTING
PRODUCT OVERVIEW

1231-3/8: LOCKNUT,PIPE.

Highlights - Designed to digitally indicate the temperature, air humidity and time Thermometer: - Stores maximum/minimum values for temperature and air humidity for one day: displays the currently highest or lowest temperature/air humidity measured up to the time of inquiry Clock/calendar/alarm function: - Shows the time in twelve hour or twenty-four hour clock - Date and weekday display Note for Consumers: The air humidity can only be displayed in inner rooms. What's in the Box - 1 "TH-120" thermometer/hygrometer - 1 LR44 button cell - Operating instructions This part is cataloged in the U.S. Government catalog under NSN 4730-00-277-7874, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
1231-3/8
NSN: 4730-00-277-7874
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 55317 — WESTCHESTER SQUARE PLUMBING SUPPLY COMPANY INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_stylePIPE LOCKNUT
nut_height0.250 INCHES NOMINAL IN
thread_class2A A
thread_seriesNPSL
thread_directionRIGHT-HAND
width_across_flats1.000 INCHES NOMINAL IN
nominal_thread_size0.375 INCHES IN
packing_recess_depth0.0625 INCHES NOMINAL IN
packing_recess_diameter0.875 INCHES NOMINAL IN
thread_quantity_per_inch18
NSN4730-00-277-7874
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1231-3/8 · Hama ⚠ 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: 1.000 INCHES NOMINAL IN
•
PACKING RECESS DIAMETER: 0.875 INCHES NOMINAL IN
•
THREAD SERIES: NPSL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
NUT HEIGHT: 0.250 INCHES NOMINAL IN
•
NUT STYLE: PIPE LOCKNUT
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.000 INCHES NOMINAL IN
PACKING RECESS DIAMETER0.875 INCHES NOMINAL IN
THREAD SERIESNPSL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.375 INCHES IN
NUT HEIGHT0.250 INCHES NOMINAL IN
NUT STYLEPIPE LOCKNUT
THREAD CLASS2A A
THREAD QUANTITY PER INCH18
MATERIALCOPPER ALLOY OVERALL
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
1231Reference 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 1231-3/8?
1231-3/8 is a LOCKNUT,PIPE manufactured by Hama.
What parts can replace 1231-3/8?
There is 1 known substitute for 1231-3/8: 1231. Substitute compatibility should be verified for your specific system.
What is the NSN for 1231-3/8?
1231-3/8 is cataloged in the U.S. Government catalog under NSN 4730-00-277-7874. This indicates validated use in U.S. government and defense supply chains.
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