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PartsTable / COMPONENT / A-16777-1
A-16777-1 ✓ 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

CONNECTOR,RECEPTACLE,ELECTRICAL. Key specifications include overall_height: 0.750 INCHES NOMINAL IN, style_designator: PLAIN, seat_angle_in_deg: 45.000 NOMINAL, body_inside_diameter: 4.000 INCHES NOMINAL IN, body_outside_diameter: 4.875 INCHES NOMINAL IN, seating_surface_shape: ANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-146-5903, 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
A-16777-1
NSN: 4820-01-146-5903
FSC: 4820
CAGE: 09032 — TATE ANDALE, LLC (USA)
SPECIFICATIONS
overall_height0.750 INCHES NOMINAL IN
style_designatorPLAIN
seat_angle_in_deg45.000 NOMINAL
body_inside_diameter4.000 INCHES NOMINAL IN
body_outside_diameter4.875 INCHES NOMINAL IN
seating_surface_shapeANGULAR
NSN4820-01-146-5903
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: A-16777-1 · 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
•
STYLE DESIGNATOR: PLAIN
•
SEATING SURFACE SHAPE: ANGULAR
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
•
BODY INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 4.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORPLAIN
SEATING SURFACE SHAPEANGULAR
SEAT ANGLE IN DEG45.000 NOMINAL
BODY INSIDE DIAMETER4.000 INCHES NOMINAL IN
OVERALL HEIGHT0.750 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER4.875 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
16777-1Interchangeable
interchangeable cross-reference
interchangeable
16777Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-16777-1?
A-16777-1 is a CONNECTOR,RECEPTACLE,ELECTRICAL.
What parts can replace A-16777-1?
There are 2 known substitutes for A-16777-1: 16777-1, 16777. Substitute compatibility should be verified for your specific system.
What is the NSN for A-16777-1?
A-16777-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-146-5903. 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