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Technical Data Sheet
PartsTable / COMPONENT / 51158-F-380
51158-F-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: 0.280 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.556 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 1.375 INCHES SINGLE THREADED PORTION IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-058-3675, 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-F-380
NSN: 4820-01-058-3675
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_length0.280 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.556 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size1.375 INCHES SINGLE THREADED PORTION IN
under_flange_height0.375 INCHES NOMINAL IN
body_inside_diameter0.750 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch20 SINGLE THREADED PORTION
thread_series_designatorUN SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.156 INCHES NOMINAL IN
NSN4820-01-058-3675
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 51158-F-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
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
STYLE DESIGNATOR: THREADED FLANGED
•
THREAD SERIES DESIGNATOR: UN SINGLE THREADED PORTION
•
SEATING SURFACE SHAPE: FLAT
•
THREAD LENGTH: 0.280 INCHES NOMINAL SINGLE THREADED PORTION IN
•
BODY INSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.156 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 20 SINGLE THREADED PORTION
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING OVERALL
STYLE DESIGNATORTHREADED FLANGED
THREAD SERIES DESIGNATORUN SINGLE THREADED PORTION
SEATING SURFACE SHAPEFLAT
THREAD LENGTH0.280 INCHES NOMINAL SINGLE THREADED PORTION IN
BODY INSIDE DIAMETER0.750 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.156 INCHES NOMINAL IN
THREAD QUANTITY PER INCH20 SINGLE THREADED PORTION
FLANGE DIAMETER1.556 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.375 INCHES SINGLE THREADED PORTION 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
845-1889587 PIECE 4 3/4INInterchangeable
interchangeable cross-reference
interchangeable
51158-E-380Interchangeable
interchangeable cross-reference
interchangeable
51158-B-380Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51158-F-380?
51158-F-380 is a SEAT,VALVE.
What parts can replace 51158-F-380?
There are 10 known substitutes for 51158-F-380: SS845-1889587AS, 584-1-594-1, 51158D and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51158-F-380?
51158-F-380 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-058-3675. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026