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Technical Data Sheet
PartsTable / COMPONENT / 10161950
10161950 ✓ 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 440C OVERALL, flange_diameter: 0.781 INCHES NOMINAL IN, hardness_rating: 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL, style_designator: PLAIN FLANGED, surface_treatment: PASSIVATE OVERALL, under_flange_height: 0.410 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 4820-00-180-5207, 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
10161950
NSN: 4820-00-180-5207
FSC: 4820
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 440C OVERALL
flange_diameter0.781 INCHES NOMINAL IN
hardness_rating55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL
style_designatorPLAIN FLANGED
surface_treatmentPASSIVATE OVERALL
under_flange_height0.410 INCHES NOMINAL IN
body_inside_diameter0.250 INCHES NOMINAL IN
body_outside_diameter0.557 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
seating_surface_shapeFLAT
flange_seat_to_disk_end_height0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
surface_treatment_document_and_classificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4820-00-180-5207
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 10161950 · 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
•
UNDER FLANGE HEIGHT: 0.410 INCHES NOMINAL IN
•
HARDNESS RATING: 55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: PLAIN FLANGED
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 440C OVERALL
•
FLANGE SEAT TO DISK END HEIGHT: 0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
•
BODY OUTSIDE DIAMETER: 0.557 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
•
BODY INSIDE DIAMETER: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
UNDER FLANGE HEIGHT0.410 INCHES NOMINAL IN
HARDNESS RATING55.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORPLAIN FLANGED
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 440C OVERALL
FLANGE SEAT TO DISK END HEIGHT0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN
BODY OUTSIDE DIAMETER0.557 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
BODY INSIDE DIAMETER0.250 INCHES NOMINAL IN
SEATING SURFACE SHAPEFLAT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
16-504Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/11Interchangeable
interchangeable cross-reference
interchangeable
QQA200-11Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
LS3469Interchangeable
interchangeable cross-reference
interchangeable
QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10161950?
10161950 is a SEAT,VALVE.
What parts can replace 10161950?
There are 15 known substitutes for 10161950: 16-504, AMS-QQ-A-200/11, QQA200-11 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10161950?
10161950 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-180-5207. 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