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Technical Data Sheet
PartsTable / COMPONENT / L-7-2557
L-7-2557 ✓ Verified by PartsTable
— · 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

The KEY,SOCKET HEAD SCREW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, overall_length: 3.344 INCHES NOMINAL IN, long_arm_length: 3.125 INCHES NOMINAL IN, short_arm_length: 1.062 INCHES NOMINAL IN, style_designator: L-HANDLE, features_provided: NONMAGNETIC AND NONSPARKING. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-00-189-2989, 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
L-7-2557
NSN: 5120-00-189-2989
FSC: 5120
CAGE: 61452 — NGK METALS CORPORATION DBA N G K BERYLCO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
overall_length3.344 INCHES NOMINAL IN
long_arm_length3.125 INCHES NOMINAL IN
short_arm_length1.062 INCHES NOMINAL IN
style_designatorL-HANDLE
features_providedNONMAGNETIC AND NONSPARKING
wrenching_surface_size0.219 INCHES NOMINAL BOTH ENDS IN
wrenching_surface_shapeHEXAGON BOTH ENDS EXTERNAL
NSN5120-00-189-2989
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available KEY,SOCKET HEAD SCREW TITLE COMPONENT PN L-7-2557 MFR KEY,SOCKET HEAD SCREW
KEY FEATURES
•
WRENCHING SURFACE SIZE: 0.219 INCHES NOMINAL BOTH ENDS IN
•
WRENCHING SURFACE SHAPE: HEXAGON BOTH ENDS EXTERNAL
•
LONG ARM LENGTH: 3.125 INCHES NOMINAL IN
•
FEATURES PROVIDED: NONMAGNETIC AND NONSPARKING
•
STYLE DESIGNATOR: L-HANDLE
•
MATERIAL: COPPER ALLOY OVERALL
•
SHORT ARM LENGTH: 1.062 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
WRENCHING SURFACE SIZE0.219 INCHES NOMINAL BOTH ENDS IN
WRENCHING SURFACE SHAPEHEXAGON BOTH ENDS EXTERNAL
LONG ARM LENGTH3.125 INCHES NOMINAL IN
FEATURES PROVIDEDNONMAGNETIC AND NONSPARKING
STYLE DESIGNATORL-HANDLE
MATERIALCOPPER ALLOY OVERALL
OVERALL LENGTH3.344 INCHES NOMINAL IN
SHORT ARM LENGTH1.062 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
L-17Interchangeable
interchangeable cross-reference
interchangeable
W-1050-TInterchangeable
interchangeable cross-reference
interchangeable
L-17-2592Interchangeable
interchangeable cross-reference
interchangeable
W-1050-MInterchangeable
interchangeable cross-reference
interchangeable
L-16-2590Interchangeable
interchangeable cross-reference
interchangeable
W-1050-UInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L-7-2557?
L-7-2557 is a KEY,SOCKET HEAD SCREW.
What parts can replace L-7-2557?
There are 29 known substitutes for L-7-2557: L-17, W-1050-T, L-17-2592 and 26 more. Substitute compatibility should be verified for your specific system.
Is L-7-2557 still available?
L-7-2557 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