PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 2620-902 ASSYC PC4 1 1-2IN
2620-902 ASSYC PC4 1 1-2IN ✓ 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 LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 3A SINGLE THREADED PORTION A, thread_length: 0.406 INCHES NOMINAL SINGLE THREADED PORTION IN, flange_diameter: 2.125 INCHES NOMINAL IN, style_designator: THREADED FLANGED, seat_angle_in_deg: 45.000 NOMINAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-075-6588, 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
2620-902 ASSYC PC4 1 1-2IN
NSN: 4820-01-075-6588
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class3A SINGLE THREADED PORTION A
thread_length0.406 INCHES NOMINAL SINGLE THREADED PORTION IN
flange_diameter2.125 INCHES NOMINAL IN
style_designatorTHREADED FLANGED
seat_angle_in_deg45.000 NOMINAL
nominal_thread_size1.938 INCHES SINGLE THREADED PORTION IN
under_flange_height0.406 INCHES NOMINAL IN
body_inside_diameter1.500 INCHES NOMINAL IN
seating_surface_shapeANGULAR
thread_quantity_per_inch18 SINGLE THREADED PORTION
thread_series_designatorUNS SINGLE THREADED PORTION
NSN4820-01-075-6588
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2620-902 ASSYC PC4 1 1-2IN · 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: NICKEL ALLOY OVERALL
•
STYLE DESIGNATOR: THREADED FLANGED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
FLANGE SEAT TO DISK END HEIGHT: 0.247 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18 SINGLE THREADED PORTION
•
THREAD CLASS: 3A SINGLE THREADED PORTION A
•
SEAT ANGLE IN DEG: 45.000 NOMINAL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY OVERALL
STYLE DESIGNATORTHREADED FLANGED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNS SINGLE THREADED PORTION
FLANGE SEAT TO DISK END HEIGHT0.247 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18 SINGLE THREADED PORTION
THREAD CLASS3A SINGLE THREADED PORTION A
SEAT ANGLE IN DEG45.000 NOMINAL
SEATING SURFACE SHAPEANGULAR
FLANGE DIAMETER2.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 34
C38476Interchangeable
interchangeable cross-reference
interchangeable
SS845-1889587Interchangeable
interchangeable cross-reference
interchangeable
SC3549 3-4INInterchangeable
interchangeable cross-reference
interchangeable
2620-902 ASSY CInterchangeable
interchangeable cross-reference
interchangeable
845-1889587ASSYCFInterchangeable
interchangeable cross-reference
interchangeable
2620-902Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 2620-902 ASSYC PC4 1 1-2IN?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 2620-902 ASSYC PC4 1 1-2IN?
2620-902 ASSYC PC4 1 1-2IN is a LOCKNUT,TUBE FITTING.
What parts can replace 2620-902 ASSYC PC4 1 1-2IN?
There are 34 known substitutes for 2620-902 ASSYC PC4 1 1-2IN: C38476, SS845-1889587, SC3549 3-4IN and 31 more. Substitute compatibility should be verified for your specific system.
Is 2620-902 ASSYC PC4 1 1-2IN still available?
2620-902 ASSYC PC4 1 1-2IN is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 2620-902 ASSYC PC4 1 1-2IN

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026