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I6U-SS — NIPPLE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

I6U-SS: NIPPLE,TUBE.

The NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, seat_angle: 20.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_style: FLARELESS (TUBE) ALL ENDS, special_features: WEAPON SYSTEM ESSENTIAL, style_designator: FLARELESS W/ CENTER WRENCHING FACILITY. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-061-0414, 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
I6U-SS
NSN: 4730-00-061-0414
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 79926 — SSP FITTINGS CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
seat_angle20.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_styleFLARELESS (TUBE) ALL ENDS
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorFLARELESS W/ CENTER WRENCHING FACILITY
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.562 INCHES ALL ENDS IN
nominal_overall_length1.770 INCHES IN
end_item_identificationAIRCRAFT, B-2, C-5, C-130'S, F-14, F-16; SHIP, CVN
thread_series_designatorUNF ALL ENDS
furnished_items_and_quantity2 SHORT COUPLING NUT AND 2 COUPLING SLEEVE
NSN4730-00-061-0414
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: I6U-SS · 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
•
FURNISHED ITEMS AND QUANTITY: 2 SHORT COUPLING NUT AND 2 COUPLING SLEEVE
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.770 INCHES IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
STYLE DESIGNATOR: FLARELESS W/ CENTER WRENCHING FACILITY
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 0.562 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 SHORT COUPLING NUT AND 2 COUPLING SLEEVE
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.770 INCHES IN
CRITICALITY CODE JUSTIFICATIONFEAT
STYLE DESIGNATORFLARELESS W/ CENTER WRENCHING FACILITY
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES ALL ENDS IN
NOMINAL THREAD SIZE0.562 INCHES ALL ENDS IN
SEAT ANGLE20.0 DEGREES ALL ENDS
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
SUBSTITUTES & CROSS-REFERENCES 6
SS-600-6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5114-4636-1Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
600-6-316Reference document
Same NSN cross-reference
Reference document — Secondary reference
7M493Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
6-6 HBZ-SSReference document
Same NSN cross-reference
Reference document — Secondary reference
AA537/OSame 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 I6U-SS?
I6U-SS is a NIPPLE,TUBE.
What parts can replace I6U-SS?
There are 6 known substitutes for I6U-SS: SS-600-6, 5114-4636-1, 600-6-316 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for I6U-SS?
I6U-SS is cataloged in the U.S. Government catalog under NSN 4730-00-061-0414. 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.