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PartsTable / COMPONENT / 992D PIECE 20
992D PIECE 20 ✓ 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: COPPER ALLOY OVERALL, thread_length: 0.635 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 3.632 INCHES NOMINAL IN, style_designator: THREADED FLANGED, nominal_thread_size: 3.500 INCHES SINGLE THREADED PORTION IN, under_flange_height: 0.938 INCHES NOMINAL 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 4820-01-093-0864, 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
992D PIECE 20
NSN: 4820-01-093-0864
FSC: 4820
CAGE: 75545 — LAWLER MANUFACTURING COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thread_length0.635 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter3.632 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
nominal_thread_size3.500 INCHES SINGLE THREADED PORTION IN
under_flange_height0.938 INCHES NOMINAL IN
body_inside_diameter2.621 INCHES NOMINAL IN
seating_surface_shapeFLAT
thread_quantity_per_inch11 SINGLE THREADED PORTION
flange_seat_to_disk_end_height0.165 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
material_document_and_classificationMIL-B-1654 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4820-01-093-0864
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 992D PIECE 20 · 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
•
BODY INSIDE DIAMETER: 2.621 INCHES NOMINAL IN
•
SEATING SURFACE SHAPE: FLAT
•
STYLE DESIGNATOR: THREADED FLANGED
•
MATERIAL: COPPER ALLOY OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-1654 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD LENGTH: 0.635 INCHES NOMINAL SINGLE THREADED PORTION IN
•
FLANGE DIAMETER: 3.632 INCHES NOMINAL IN
•
FLANGE SEAT TO DISK END HEIGHT: 0.165 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
BODY INSIDE DIAMETER2.621 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
STYLE DESIGNATORTHREADED FLANGED
MATERIALCOPPER ALLOY OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-1654 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD LENGTH0.635 INCHES NOMINAL SINGLE THREADED PORTION IN
FLANGE DIAMETER3.632 INCHES NOMINAL IN
FLANGE SEAT TO DISK END HEIGHT0.165 INCHES MINIMUM AND 0.308 INCHES MAXIMUM IN
UNDER FLANGE HEIGHT0.938 INCHES NOMINAL IN
NOMINAL THREAD SIZE3.500 INCHES SINGLE THREADED PORTION IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
6264302Interchangeable
interchangeable cross-reference
interchangeable
87761Interchangeable
interchangeable cross-reference
interchangeable
992DInterchangeable
interchangeable cross-reference
interchangeable
992-D-21Interchangeable
interchangeable cross-reference
interchangeable
2941Interchangeable
interchangeable cross-reference
interchangeable
2941-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 992D PIECE 20?
992D PIECE 20 is a SEAT,VALVE.
What parts can replace 992D PIECE 20?
There are 16 known substitutes for 992D PIECE 20: 6264302, 87761, 992D and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 992D PIECE 20?
992D PIECE 20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-093-0864. 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