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17K4 — ELBOW,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

17K4: ELBOW,TUBE TO BOSS.

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flange_diameter: 2.094 INCHES NOMINAL IN, style_designator: PLAIN FLANGED, seat_angle_in_deg: 45.000 NOMINAL, under_flange_height: 0.156 INCHES NOMINAL IN, body_inside_diameter: 0.344 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-228-1099, 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
17K4
NSN: 4730-00-228-1099
NIINs: 002281099, 004131679
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flange_diameter2.094 INCHES NOMINAL IN
style_designatorPLAIN FLANGED
seat_angle_in_deg45.000 NOMINAL
under_flange_height0.156 INCHES NOMINAL IN
body_inside_diameter0.344 INCHES NOMINAL IN
body_outside_diameter1.906 INCHES NOMINAL IN
seating_surface_shapeANGULAR
flange_seat_to_disk_end_height0.156 INCHES NOMINAL IN
NSN4730-00-228-1099
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 17K4 · 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: 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.312 INCHES FIRST END IN
•
LEG LENGTH: 1.078 INCHES NOMINAL SECOND END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.312 INCHES FIRST END IN
LEG LENGTH1.078 INCHES NOMINAL SECOND END IN
LEG LENGTH0.922 INCHES NOMINAL FIRST END IN
NOMINAL THREAD SIZE0.500 INCHES ALL ENDS IN
SUBSTITUTES & CROSS-REFERENCES 6
0526421-00Reference document
Same NSN cross-reference
Reference document — Secondary reference
526421Reference document
Same NSN cross-reference
Reference document — Secondary reference
5C50X-SReference document
Same NSN cross-reference
Reference document — Secondary reference
MS51527B5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
301SR627Reference document
Same NSN cross-reference
Reference document — Secondary reference
00717-K-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 17K4?
17K4 is a ELBOW,TUBE TO BOSS.
What parts can replace 17K4?
There are 6 known substitutes for 17K4: 0526421-00, 526421, 5C50X-S and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 17K4?
17K4 is cataloged in the U.S. Government catalog under NSN 4730-00-228-1099. This indicates validated use in U.S. government and defense supply chains.
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