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KC108K20 — ELBOW,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

KC108K20: ELBOW,TUBE TO BOSS.

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 2.234 INCHES NOMINAL SECOND END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL TUBE FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-017-8288, 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
KC108K20
NSN: 4730-01-017-8288
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 22264 — JOHN F KENNEDY SPACE CENTER DBA NASA DIV KENNEDY SPACE CENTER (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
flow_angle90.0 DEGREES
leg_length2.234 INCHES NOMINAL SECOND END IN
seat_angle37.0 DEGREES FIRST END
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARED (TUBE) FIRST END
special_featuresMACHINED GROOVE IN FLARED END TO ACCOMMODATE SEAL RING PER KC103
surface_treatmentPASSIVATE OUTSIDE
nominal_thread_size1.625 INCHES FIRST END IN
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN SECOND END
NSN4730-01-017-8288
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: KC108K20 · 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
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: PLAIN (HOSE) SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.250 INCHES FIRST END IN
•
LEG LENGTH: 2.031 INCHES NOMINAL FIRST END IN
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEPLAIN (HOSE) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.250 INCHES FIRST END IN
LEG LENGTH2.031 INCHES NOMINAL FIRST END IN
LEG LENGTH2.234 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE1.625 INCHES SECOND END IN
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
AS4303K20Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
KC108C20Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is KC108K20?
KC108K20 is a ELBOW,TUBE TO BOSS.
What parts can replace KC108K20?
There are 2 known substitutes for KC108K20: AS4303K20, KC108C20. Substitute compatibility should be verified for your specific system.
What is the NSN for KC108K20?
KC108K20 is cataloged in the U.S. Government catalog under NSN 4730-01-017-8288. This indicates validated use in U.S. government and defense supply chains.
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