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3H122 — FITTING,LUBRICATION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3H122: FITTING,LUBRICATION.

The FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, inclosure_type: FULLY INCLOSED, pitch_diameter: 15.6660 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-172-0049, 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
3H122
NSN: 4730-00-172-0049
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
inclosure_typeFULLY INCLOSED
pitch_diameter15.6660 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity94
mounting_methodBRACKET(S) SINGLE GROUP
frequency_rating1.2 KILOHERTZ NOMINAL SINGLE COMPONENT
style_designatorHUBLESS
face_nominal_width0.871 INCHES IN
NSN4730-00-172-0049
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3H122 · 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 9
122-255733 PC NO. 52Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
AS15006-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
02331-1912Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS15006Reference document
Same NSN cross-reference
Reference document — Secondary reference
A5045Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS15006-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3H122?
3H122 is a FITTING,LUBRICATION.
What parts can replace 3H122?
There are 9 known substitutes for 3H122: 122-255733 PC NO. 52, AS15006-1, 02331-1912 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3H122?
3H122 is cataloged in the U.S. Government catalog under NSN 4730-00-172-0049. 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.