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DF6503-175 — UNIVERSAL JOINT,NONVEHICULAR

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

DF6503-175: UNIVERSAL JOINT,NONVEHICULAR.

The UNIVERSAL JOINT,NONVEHICULAR is a the manufacturer industrial component. Key specifications include outside_shape: ROUND, overall_length: 6.437 INCHES NOMINAL IN, spline_quantity: 10, outside_diameter: 2.000 INCHES NOMINAL IN, end_item_identification: WEAPONS SYSTEM SEAWOLF CLASS SSN, general_characteristics_item_description: NICKEL ALUMINUM BRONZE. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-378-4509, 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
DF6503-175
NSN: 4820-01-378-4509
NIINs: 013784509, 014189549
FSC: 4820 — Valves, Nonpowered
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
outside_shapeROUND
overall_length6.437 INCHES NOMINAL IN
spline_quantity10
outside_diameter2.000 INCHES NOMINAL IN
special_featuresUSED ON AIR INDUCTION AND DIESEL EXHAUST VALVES OPERATING GR AND GAGGING GR; WIDTH, BOTH ENDS: 0.159 IN. NOMINAL; CONNECTION END TYPE, BOTH ENDS: HUB IN
end_item_identificationWEAPONS SYSTEM SEAWOLF CLASS SSN
general_characteristics_item_descriptionNICKEL ALUMINUM BRONZE
NSN4820-01-378-4509
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: DF6503-175 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: NICKEL ALUMINUM BRONZE
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONNICKEL ALUMINUM BRONZE
SUBSTITUTES & CROSS-REFERENCES 5
512-6404653Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
DF6503-175-18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DF6503-173-77Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
DF6503-173Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
512-6404652Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DF6503-175?
DF6503-175 is a UNIVERSAL JOINT,NONVEHICULAR.
What parts can replace DF6503-175?
There are 5 known substitutes for DF6503-175: 512-6404653, DF6503-175-18, DF6503-173-77 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DF6503-175?
DF6503-175 is cataloged in the U.S. Government catalog under NSN 4820-01-378-4509. This indicates validated use in U.S. government and defense supply chains.
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