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3770-40125 ITEM 3 — Technical Data Sheet

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— · 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

PISTON,LINEAR ACTUATING CYLINDER. Key specifications include material: STEEL OVERALL, hardness_rating: 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL, end_item_identification: SEAWOLF CLASS SSN, material_document_and_classification: AISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3020-01-450-9796, 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
3770-40125 ITEM 3
NSN: 3020-01-450-9796
FSC: 3020
CAGE: 07270 — MOOG INC. DBA AMPAC-ISP CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hardness_rating32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
end_item_identificationSEAWOLF CLASS SSN
material_document_and_classificationAISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN3020-01-450-9796
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PISTON,LINEAR ACTUATING CYLINDER TITLE COMPONENT PN 3770-40125 ITEM 3 MFR PISTON,LINEAR ACTUATIN
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 4140 FED STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
3799InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
37990InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3770-40125InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3770-40125 ITEM 2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
37252InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3770-40125 ITEM 7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3770-40125 ITEM 3?
3770-40125 ITEM 3 is a PISTON,LINEAR ACTUATING CYLINDER.
What parts can replace 3770-40125 ITEM 3?
There are 7 known substitutes for 3770-40125 ITEM 3: 3799, 37990, 3770-40125 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3770-40125 ITEM 3?
3770-40125 ITEM 3 is cataloged in the Federal Logistics Information System under NSN 3020-01-450-9796. 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: October 2026