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YCH1711B — FITTING,LUBRICATION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

YCH1711B: FITTING,LUBRICATION.

The FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include height: 0.656 INCHES NOMINAL IN, material: STEEL OVERALL, shank_length: 0.250 INCHES MINIMUM IN, thread_class: 2A A, special_features: SURFACE LOCATED BALL CHECK VALVE, style_designator: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-278-5652, 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
YCH1711B
NSN: 4730-00-278-5652
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 1DH03 — SKM3 CHEMICALS INC DBA SKM3/TRANSAX INC (USA)
SPECIFICATIONS
height0.656 INCHES NOMINAL IN
materialSTEEL OVERALL
shank_length0.250 INCHES MINIMUM IN
thread_class2A A
special_featuresSURFACE LOCATED BALL CHECK VALVE
style_designatorSTRAIGHT
surface_treatmentZINC OVERALL
width_across_flats0.375 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
thread_quantity_per_inch24
screw_thread_series_designatorUNF
NSN4730-00-278-5652
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: YCH1711B · 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
•
WIDTH ACROSS FLATS: 0.375 INCHES NOMINAL IN
•
SHANK LENGTH: 0.250 INCHES MINIMUM IN
•
STYLE DESIGNATOR: STRAIGHT
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
HEIGHT: 0.656 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: UNF
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.375 INCHES NOMINAL IN
SHANK LENGTH0.250 INCHES MINIMUM IN
STYLE DESIGNATORSTRAIGHT
NOMINAL THREAD SIZE0.312 INCHES IN
HEIGHT0.656 INCHES NOMINAL IN
SPECIAL FEATURESSURFACE LOCATED BALL CHECK VALVE
SCREW THREAD SERIES DESIGNATORUNF
SURFACE TREATMENTZINC OVERALL
THREAD CLASS2A A
THREAD QUANTITY PER INCH24
SUBSTITUTES & CROSS-REFERENCES 6
353040AS7Reference document
Same NSN cross-reference
Reference document — Secondary reference
1095K51Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1711-BReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
122-5008311 PC 55Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
122-5589566 PC 65Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
1711Reference document
Same NSN cross-reference
Reference document — Secondary 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 YCH1711B?
YCH1711B is a FITTING,LUBRICATION.
What parts can replace YCH1711B?
There are 6 known substitutes for YCH1711B: 353040AS7, 1095K51, 1711-B and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for YCH1711B?
YCH1711B is cataloged in the U.S. Government catalog under NSN 4730-00-278-5652. 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.