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 criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL 1 ITEMS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-073-5849, 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
803-2177934-X3XX-18
NSN:4820-01-073-5849 FSC:4820 CAGE:53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
criticality_code_justification
ZZZY
reference_number_differentiating_characteristics
MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL 1 ITEMS
NSN
4820-01-073-5849
COMPONENT DIAGRAM
KEY FEATURES
•
UNDER FLANGE HEIGHT: 0.316 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.766 INCHES SINGLE THREADED PORTION IN
•
THREAD LENGTH: 0.222 INCHES NOMINAL SINGLE THREADED PORTION IN
•
MATERIAL: NICKEL ALLOY OVERALL
•
THREAD SERIES DESIGNATOR: UNS SINGLE THREADED PORTION
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-281 CLASS B FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-288 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STYLE DESIGNATOR: THREADED FLANGED
•
BODY INSIDE DIAMETER: 0.471 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
UNDER FLANGE HEIGHT
0.316 INCHES NOMINAL IN
NOMINAL THREAD SIZE
0.766 INCHES SINGLE THREADED PORTION IN
THREAD LENGTH
0.222 INCHES NOMINAL SINGLE THREADED PORTION IN
MATERIAL
NICKEL ALLOY OVERALL
THREAD SERIES DESIGNATOR
UNS SINGLE THREADED PORTION
MATERIAL DOCUMENT AND CLASSIFICATION
QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-281 CLASS B FED SPEC SINGLE MATERIAL RESPONSE OR QQ-N-288 COMP A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
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FREQUENTLY ASKED QUESTIONS
What is 803-2177934-X3XX-18?
803-2177934-X3XX-18 is a LOCKNUT,TUBE FITTING.
What parts can replace 803-2177934-X3XX-18?
There are 26 known substitutes for 803-2177934-X3XX-18: C38476, SS845-1889587, SC3549 3-4IN and 23 more. Substitute compatibility should be verified for your specific system.
Is 803-2177934-X3XX-18 still available?
803-2177934-X3XX-18 is currently cancelled.
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