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500000-0600 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

500000-0600: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY SEAT, thread_class: 2B SINGLE THREADED PORTION, thread_length: 0.625 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 1.750 INCHES NOMINAL IN, special_features: VALVE SIZE 6IN. IN, nominal_thread_size: 7.750 INCHES SINGLE THREADED PORTION IN.

This part is cataloged in the U.S. Government catalog under NSN 4820-01-287-0979, 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
500000-0600
NSN: 4820-01-287-0979
FSC: 4820 — Valves, Nonpowered
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
materialNICKEL ALLOY SEAT
thread_class2B SINGLE THREADED PORTION
thread_length0.625 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height1.750 INCHES NOMINAL IN
special_featuresVALVE SIZE 6IN. IN
nominal_thread_size7.750 INCHES SINGLE THREADED PORTION IN
body_inside_diameter6.875 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch12 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
material_document_and_classificationQQ-N-288/B FED SPEC SINGLE MATERIAL RESPONSE SEAT
NSN4820-01-287-0979
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 500000-0600 · 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
•
THREAD LENGTH: 0.625 INCHES NOMINAL SINGLE THREADED PORTION IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-288/B FED SPEC SINGLE MATERIAL RESPONSE SEAT
•
BODY INSIDE DIAMETER: 6.875 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 7.750 INCHES SINGLE THREADED PORTION IN
•
THREAD CLASS: 2B SINGLE THREADED PORTION
•
THREAD QUANTITY PER INCH: 12 SINGLE THREADED PORTION
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.750 INCHES NOMINAL IN
THREAD LENGTH0.625 INCHES NOMINAL SINGLE THREADED PORTION IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-288/B FED SPEC SINGLE MATERIAL RESPONSE SEAT
BODY INSIDE DIAMETER6.875 INCHES NOMINAL IN
NOMINAL THREAD SIZE7.750 INCHES SINGLE THREADED PORTION IN
SPECIAL FEATURESVALVE SIZE 6IN. IN
THREAD CLASS2B SINGLE THREADED PORTION
THREAD QUANTITY PER INCH12 SINGLE THREADED PORTION
MATERIALNICKEL ALLOY SEAT
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
OTHER ITEMS IN FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097 4820-00-001-0010 4820-00-001-0020 4820-00-001-0021 4820-00-001-0032 4820-00-001-0037 4820-00-001-0042 4820-00-001-1230
SUBSTITUTES & CROSS-REFERENCES 2
500000-0600-04J1Reference document
Same NSN cross-reference
Reference document — Secondary reference
803-1385541Reference 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 500000-0600?
500000-0600 is a SEAT,VALVE.
What parts can replace 500000-0600?
There are 2 known substitutes for 500000-0600: 500000-0600-04J1, 803-1385541. Substitute compatibility should be verified for your specific system.
What is the NSN for 500000-0600?
500000-0600 is cataloged in the U.S. Government catalog under NSN 4820-01-287-0979. 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.