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Technical Data Sheet
PartsTable / IT_GENERAL / L1-4
L1-4 ✓ Verified by PartsTable
LENOVO · IT_GENERAL · IT_UNCLASSIFIED
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

The MICROCIRCUIT,DIGITAL is a LENOVO industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-010-3319, 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
IT_GENERAL→ IT_UNCLASSIFIED→ L1-4
NSN: 5310-00-010-3319
FSC: 5310
CAGE: 72540 — DAYTON-WALTHER CORP (USA)
SPECIFICATIONS
Part NumberL1-4
ManufacturerLENOVO
NSN5310-00-010-3319
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: LENOVO MICROCIRCUIT,DIGITAL TITLE COMPONENT PN L1-4 MFR LENOVO MICROCIRCUIT,DIGITAL
KEY FEATURES
•
NONDEFINITIVE SPEC/STD DATA: 2 STYLE AND A CLASS
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OR AISI NATIONAL SPEC ALL MATERIAL RESPONSES OR SAE NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL THICKNESS: 0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
OUTSIDE DIAMETER: 0.489 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA2 STYLE AND A CLASS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OR AISI NATIONAL SPEC ALL MATERIAL RESPONSES OR SAE NATIONAL SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL THICKNESS0.062 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
OUTSIDE DIAMETER0.489 INCHES MAXIMUM IN
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
4662Interchangeable
interchangeable cross-reference
interchangeable
256-0179-010Interchangeable
interchangeable cross-reference
interchangeable
34845S7S8Interchangeable
interchangeable cross-reference
interchangeable
12X199Interchangeable
interchangeable cross-reference
interchangeable
X1022Interchangeable
interchangeable cross-reference
interchangeable
379Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L1-4?
L1-4 is a MICROCIRCUIT,DIGITAL manufactured by LENOVO. It is classified as a IT_GENERAL (IT_UNCLASSIFIED).
What parts can replace L1-4?
There are 26 known substitutes for L1-4: 4662, 256-0179-010, 34845S7S8 and 23 more. Substitute compatibility should be verified for your specific system.
Is L1-4 still available?
L1-4 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