PartsTable
Technical Data Sheet
Download PDF

A50603MFD — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

A50603MFD: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.594 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 5.000 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 45.000 NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-236-0607, 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
A50603MFD
NSN: 4820-01-236-0607
FSC: 4820 — Valves, Nonpowered
CAGE: 11859 — HUNT VALVE COMPANY, INC. (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.594 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter5.000 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size4.750 INCHES SINGLE THREADED PORTION IN
under_flange_height0.750 INCHES NOMINAL IN
body_inside_diameter3.875 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch14 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-01-236-0607
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A50603MFD · 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
•
FLANGE SEAT TO DISK END HEIGHT: 0.625 INCHES NOMINAL IN
•
FLANGE DIAMETER: 5.000 INCHES NOMINAL IN
•
THREAD LENGTH: 0.594 INCHES NOMINAL SINGLE THREADED PORTION IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 3.875 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 4.750 INCHES SINGLE THREADED PORTION IN
•
UNDER FLANGE HEIGHT: 0.750 INCHES NOMINAL IN
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
TECHNICAL CHARACTERISTICS
FLANGE SEAT TO DISK END HEIGHT0.625 INCHES NOMINAL IN
FLANGE DIAMETER5.000 INCHES NOMINAL IN
THREAD LENGTH0.594 INCHES NOMINAL SINGLE THREADED PORTION IN
STYLE DESIGNATORTHREADED FLANGED
BODY INSIDE DIAMETER3.875 INCHES NOMINAL IN
NOMINAL THREAD SIZE4.750 INCHES SINGLE THREADED PORTION IN
UNDER FLANGE HEIGHT0.750 INCHES NOMINAL IN
THREAD CLASS2A SINGLE THREADED PORTION A
THREAD QUANTITY PER INCH14 SINGLE THREADED PORTION
MATERIALNICKEL ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
D50494 PIECE 2Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
D50494Reference 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
Ready to buy A50603MFD?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is A50603MFD?
A50603MFD is a SEAT,VALVE.
What parts can replace A50603MFD?
There are 2 known substitutes for A50603MFD: D50494 PIECE 2, D50494. Substitute compatibility should be verified for your specific system.
What is the NSN for A50603MFD?
A50603MFD is cataloged in the U.S. Government catalog under NSN 4820-01-236-0607. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — A50603MFD

✓ 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.