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PartsTable / COMPONENT / 2640-271 PIECE 5
2640-271 PIECE 5 ✓ 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 ADAPTER,STRAIGHT,PIPE TO TUBE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, overall_length: 2.000 INCHES NOMINAL IN, material_document_and_classification: QQ-N-281 FED 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 4820-01-156-0562, 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
2640-271 PIECE 5
NSN: 4820-01-156-0562
FSC: 4820
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY
overall_length2.000 INCHES NOMINAL IN
material_document_and_classificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
NSN4820-01-156-0562
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2640-271 PIECE 5 · 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 DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: NICKEL ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALNICKEL ALLOY
OVERALL LENGTH2.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
EE45831Interchangeable
interchangeable cross-reference
interchangeable
264-0271Interchangeable
interchangeable cross-reference
interchangeable
02-E-7359Interchangeable
interchangeable cross-reference
interchangeable
2640-271PC4Interchangeable
interchangeable cross-reference
interchangeable
SS845-2007693Interchangeable
interchangeable cross-reference
interchangeable
SS845-2007693 PIECE 4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2640-271 PIECE 5?
2640-271 PIECE 5 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 2640-271 PIECE 5?
There are 8 known substitutes for 2640-271 PIECE 5: EE45831, 264-0271, 02-E-7359 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2640-271 PIECE 5?
2640-271 PIECE 5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-01-156-0562. 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