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3407901 — REDUCER,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3407901: REDUCER,BOSS.

The REDUCER,BOSS is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4730-00-137-9240, 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
3407901
NSN: 4730-00-137-9240
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
Part Number3407901
NSN4730-00-137-9240
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3407901 · 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
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 6
16-8F5OG5-SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
13218E4140Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
16-8F50G5SReference document
Same NSN cross-reference
Reference document — Secondary reference
3836882C1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
171SH601Reference document
Same NSN cross-reference
Reference document — Secondary reference
84000906-016Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3407901?
3407901 is a REDUCER,BOSS.
What parts can replace 3407901?
There are 6 known substitutes for 3407901: 16-8F5OG5-S, 13218E4140, 16-8F50G5S and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3407901?
3407901 is cataloged in the U.S. Government catalog under NSN 4730-00-137-9240. 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.