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41FS1-2 — MODIFICATION KIT,SONAR EQUIPMENT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

41FS1-2: MODIFICATION KIT,SONAR EQUIPMENT.

MODIFICATION KIT,SONAR EQUIPMENT. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: TUBE COUPLING, nut_height: 1.500 INCHES NOMINAL IN, seat_angle: 45.00 DEGREES NOMINAL, thread_series: UNS, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-012-0141, 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
41FS1-2
NSN: 4730-00-012-0141
NIINs: 000120141, 000144309
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleTUBE COUPLING
nut_height1.500 INCHES NOMINAL IN
seat_angle45.00 DEGREES NOMINAL
thread_seriesUNS
thread_directionRIGHT-HAND
width_across_flats1.250 INCHES NOMINAL IN
nominal_thread_size1.062 INCHES IN
thread_pitch_diameters+1.0161 TO 1.0230 INCHES IN
smallest_inside_diameter0.755 INCHES NOMINAL IN
thread_quantity_per_inch14
nondefinitive_spec/std_data4 FIGURE
NSN4730-00-012-0141
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 41FS1-2 · 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
SUBSTITUTES & CROSS-REFERENCES 8
43FS1-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
J512Reference document
Same NSN cross-reference
Reference document — Secondary reference
41FS-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
805678Reference document
Same NSN cross-reference
Reference document — Secondary reference
D9484-55-51Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE J512 8 010110BReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 41FS1-2?
41FS1-2 is a MODIFICATION KIT,SONAR EQUIPMENT.
What parts can replace 41FS1-2?
There are 8 known substitutes for 41FS1-2: 43FS1-2, J512, 41FS-8 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 41FS1-2?
41FS1-2 is cataloged in the U.S. Government catalog under NSN 4730-00-012-0141. This indicates validated use in U.S. government and defense supply chains.
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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.