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PartsTable / COMPONENT / 20240 PIECE 5
20240 PIECE 5 ✓ 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 COMP 303 OVERALL, thread_class: 2A SINGLE THREADED PORTION A, thread_length: 0.707 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 1.875 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 45.000 NOMINAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-075-7352, 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
20240 PIECE 5
NSN: 4820-01-075-7352
FSC: 4820
CAGE: 01343 — ANDERSON GREENWOOD LP DBA ANDERSON GREENWOOD CROSBY (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thread_class2A SINGLE THREADED PORTION A
thread_length0.707 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter1.875 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size1.500 INCHES SINGLE THREADED PORTION IN
under_flange_height1.065 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_series_designatorUNEF SINGLE THREADED PORTION
body_stepped_inside_diameter1.000 INCHES MINIMUM AND 1.003 INCHES MAXIMUM SECOND STEP IN
flange_seat_to_disk_end_height0.378 INCHES NOMINAL IN
NSN4820-01-075-7352
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 20240 PIECE 5 · 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 CLASS: 2A SINGLE THREADED PORTION A
•
UNDER FLANGE HEIGHT: 1.065 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 303 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNEF SINGLE THREADED PORTION
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY STEPPED INSIDE DIAMETER: 1.000 INCHES MINIMUM AND 1.003 INCHES MAXIMUM SECOND STEP IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.378 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A SINGLE THREADED PORTION A
UNDER FLANGE HEIGHT1.065 INCHES NOMINAL IN
MATERIALSTEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNEF SINGLE THREADED PORTION
STYLE DESIGNATORTHREADED FLANGED
BODY STEPPED INSIDE DIAMETER1.000 INCHES MINIMUM AND 1.003 INCHES MAXIMUM SECOND STEP IN
FLANGE SEAT TO DISK END HEIGHT0.378 INCHES NOMINAL IN
SEATING SURFACE SHAPEANGULAR
NOMINAL THREAD SIZE1.500 INCHES SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
20321Interchangeable
interchangeable cross-reference
interchangeable
PX1686Interchangeable
interchangeable cross-reference
interchangeable
235H45-5Interchangeable
interchangeable cross-reference
interchangeable
72-6970-954Interchangeable
interchangeable cross-reference
interchangeable
M430774-1Interchangeable
interchangeable cross-reference
interchangeable
SK66-2742Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20240 PIECE 5?
20240 PIECE 5 is a SEAT,VALVE.
What parts can replace 20240 PIECE 5?
There are 17 known substitutes for 20240 PIECE 5: 20321, PX1686, 235H45-5 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20240 PIECE 5?
20240 PIECE 5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-075-7352. 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