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PartsTable / COMPONENT / 255757PIECE8
255757PIECE8 ✓ 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 STEM,FLUID VALVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_length: 5.288 INCHES NOMINAL IN, stem_actuating_end_type: THREADED EXTERNALLY, material_document_and_classification: MIL-B-24059 MIL SPEC SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-125-4578, 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
255757PIECE8
NSN: 4820-01-125-4578
FSC: 4820
CAGE: 43689 — HUNTINGTON INGALLS INC DIV NEWPORT NEWS SHIPBUILDING (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length5.288 INCHES NOMINAL IN
stem_actuating_end_typeTHREADED EXTERNALLY
material_document_and_classificationMIL-B-24059 MIL SPEC SINGLE MATERIAL RESPONSE
NSN4820-01-125-4578
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 255757PIECE8 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-24059 MIL SPEC SINGLE MATERIAL RESPONSE
•
STEM ACTUATING END TYPE: THREADED EXTERNALLY
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH5.288 INCHES NOMINAL IN
MATERIALNICKEL ALLOY
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-24059 MIL SPEC SINGLE MATERIAL RESPONSE
STEM ACTUATING END TYPETHREADED EXTERNALLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
255757Interchangeable
interchangeable cross-reference
interchangeable
W0367-006CADPInterchangeable
interchangeable cross-reference
interchangeable
W0367-006Interchangeable
interchangeable cross-reference
interchangeable
255757ASSYCT PIECE9Interchangeable
interchangeable cross-reference
interchangeable
255757ASSYBTInterchangeable
interchangeable cross-reference
interchangeable
255757 ASSEMBLY BTInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 255757PIECE8?
255757PIECE8 is a STEM,FLUID VALVE.
What parts can replace 255757PIECE8?
There are 7 known substitutes for 255757PIECE8: 255757, W0367-006CADP, W0367-006 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 255757PIECE8?
255757PIECE8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-125-4578. 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