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45D63 — SEAT,VALVE

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

45D63: SEAT,VALVE.

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.380 INCHES NOMINAL SINGLE THREADED PORTION IN, overall_height: 0.785 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN, style_designator: PLAIN THREADED, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-012-3260, 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
45D63
NSN: 4820-00-012-3260
FSC: 4820 — Valves, Nonpowered
CAGE: 72914 — GRIMES AEROSPACE COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.380 INCHES NOMINAL SINGLE THREADED PORTION IN
overall_height0.785 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
style_designatorPLAIN THREADED
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.438 INCHES SINGLE THREADED PORTION IN
body_inside_diameter0.155 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
seating_surface_shapeFLAT
seal_accommodation_typeGROOVED
thread_series_designatorUNF SINGLE THREADED PORTION
material_document_and_classificationAMS5640 ASSN STD 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OVERALL
NSN4820-00-012-3260
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 45D63 · 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: 0.380 INCHES NOMINAL SINGLE THREADED PORTION IN
•
SEAL ACCOMMODATION TYPE: GROOVED
•
STYLE DESIGNATOR: PLAIN THREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5640 ASSN STD 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OVERALL
•
BODY INSIDE DIAMETER: 0.155 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
•
NOMINAL THREAD SIZE: 0.438 INCHES SINGLE THREADED PORTION IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.785 INCHES MINIMUM AND 0.795 INCHES MAXIMUM IN
THREAD LENGTH0.380 INCHES NOMINAL SINGLE THREADED PORTION IN
SEAL ACCOMMODATION TYPEGROOVED
STYLE DESIGNATORPLAIN THREADED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5640 ASSN STD 1ST MATERIAL RESPONSE OR QQ-S-763 FED SPEC 2ND MATERIAL RESPONSE OVERALL
BODY INSIDE DIAMETER0.155 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.438 INCHES SINGLE THREADED PORTION IN
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A SINGLE THREADED PORTION A
MATERIALSTEEL COMP 303 OVERALL
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

No substitute or cross-reference records for this part.

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 45D63?
45D63 is a SEAT,VALVE.
What is the NSN for 45D63?
45D63 is cataloged in the U.S. Government catalog under NSN 4820-00-012-3260. 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.