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PartsTable / COMPONENT / 51158-E-380
51158-E-380 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The SEAT,VALVE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.252 INCHES NOMINAL IN, special_features: INTERNAL OCTAGON WRENCH FEATURES, style_designator: THREADED FLANGED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-067-6334, 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
51158-E-380
NSN: 4820-01-067-6334
FSC: 4820
CAGE: 76364 — MILWAUKEE VALVE CO, INC DIV MILWAUKEE VALVE COMPANY, LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.250 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.252 INCHES NOMINAL IN
special_featuresINTERNAL OCTAGON WRENCH FEATURES
style_designatorTHREADED FLANGED
seat_angle_in_deg75.000 NOMINAL
nominal_thread_size1.050 INCHES SINGLE THREADED PORTION IN
under_flange_height0.341 INCHES NOMINAL IN
body_inside_diameter0.574 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch20 SINGLE THREADED PORTION
NSN4820-01-067-6334
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 51158-E-380 · 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: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: THREADED FLANGED
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
NOMINAL THREAD SIZE: 1.050 INCHES SINGLE THREADED PORTION IN
•
THREAD CLASS: 2A SINGLE THREADED PORTION A
•
BODY INSIDE DIAMETER: 0.574 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
FLANGE SEAT TO DISK END HEIGHT0.125 INCHES NOMINAL IN
STYLE DESIGNATORTHREADED FLANGED
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
MATERIALSTEEL CORROSION RESISTING OVERALL
SPECIAL FEATURESINTERNAL OCTAGON WRENCH FEATURES
NOMINAL THREAD SIZE1.050 INCHES SINGLE THREADED PORTION IN
THREAD CLASS2A SINGLE THREADED PORTION A
BODY INSIDE DIAMETER0.574 INCHES NOMINAL IN
SEAT ANGLE IN DEG75.000 NOMINAL
UNDER FLANGE HEIGHT0.341 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
SS845-1889587ASInterchangeable
interchangeable cross-reference
interchangeable
584-1-594-1Interchangeable
interchangeable cross-reference
interchangeable
51158DInterchangeable
interchangeable cross-reference
interchangeable
5160-F1-380Interchangeable
interchangeable cross-reference
interchangeable
51158-F-380Interchangeable
interchangeable cross-reference
interchangeable
2620-902ASSYD1IInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51158-E-380?
51158-E-380 is a SEAT,VALVE.
What parts can replace 51158-E-380?
There are 10 known substitutes for 51158-E-380: SS845-1889587AS, 584-1-594-1, 51158D and 7 more. Substitute compatibility should be verified for your specific system.
Is 51158-E-380 still available?
51158-E-380 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026