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20FM23D — FITTING,LUBRICATION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

20FM23D: FITTING,LUBRICATION.

The FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include height: 0.891 INCHES NOMINAL IN, material: STEEL OVERALL, shank_length: 0.344 INCHES NOMINAL IN, style_designator: STRAIGHT, surface_treatment: CADMIUM OR ZINC OVERALL, nominal_thread_size: 0.250 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-180-0774, 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
20FM23D
NSN: 4730-01-180-0774
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
height0.891 INCHES NOMINAL IN
materialSTEEL OVERALL
shank_length0.344 INCHES NOMINAL IN
style_designatorSTRAIGHT
surface_treatmentCADMIUM OR ZINC OVERALL
nominal_thread_size0.250 INCHES IN
screw_thread_series_designatorNPT
NSN4730-01-180-0774
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 20FM23D · 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
•
SHANK LENGTH: 0.344 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
HEIGHT: 0.891 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: NPT
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SHANK LENGTH0.344 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT
NOMINAL THREAD SIZE0.250 INCHES IN
HEIGHT0.891 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORNPT
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
MATERIALSTEEL 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 2
92010591NReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
92010591Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 20FM23D?
20FM23D is a FITTING,LUBRICATION.
What parts can replace 20FM23D?
There are 2 known substitutes for 20FM23D: 92010591N, 92010591. Substitute compatibility should be verified for your specific system.
What is the NSN for 20FM23D?
20FM23D is cataloged in the U.S. Government catalog under NSN 4730-01-180-0774. 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.