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Technical Data Sheet
PartsTable / COMPONENT / 770-2 3-4
770-2 3-4 ✓ Verified by PartsTable
Legrand · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

CAP ASSEMBLY,PROTECTIVE,MUFFLER-. Key specifications include material: STEEL, end_item_identification: 3805-00-727-6719, pipe_outside_diameter_accommodated: 2.750 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2990-00-309-9574, 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
770-2 3-4
NSN: 2990-00-309-9574
FSC: 2990
CAGE: 17284 — MERCURY PRODUCTS CORP (USA)
SPECIFICATIONS
materialSTEEL
end_item_identification3805-00-727-6719
pipe_outside_diameter_accommodated2.750 INCHES IN
NSN2990-00-309-9574
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Legrand CAP ASSEMBLY,PROTECTIVE,MUFFLER- TITLE COMPONENT PN 770-2 3-4 MFR Legrand CAP ASSEMBLY,PROTECTIV
KEY FEATURES
•
MATERIAL: STEEL
•
PIPE OUTSIDE DIAMETER ACCOMMODATED: 2.750 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION3805-00-727-6719
MATERIALSTEEL
PIPE OUTSIDE DIAMETER ACCOMMODATED2.750 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
11008Interchangeable
interchangeable cross-reference
interchangeable
5905001585445Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-22/3Interchangeable
interchangeable cross-reference
interchangeable
LD175690Interchangeable
interchangeable cross-reference
interchangeable
42-19Interchangeable
interchangeable cross-reference
interchangeable
061006Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 770-2 3-4?
770-2 3-4 is a CAP ASSEMBLY,PROTECTIVE,MUFFLER- manufactured by Legrand.
What parts can replace 770-2 3-4?
There are 23 known substitutes for 770-2 3-4: 11008, 5905001585445, MIL-PRF-22/3 and 20 more. Substitute compatibility should be verified for your specific system.
Is 770-2 3-4 still available?
770-2 3-4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026