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LN21 — KEY,SOCKET HEAD SCREW

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

LN21: KEY,SOCKET HEAD SCREW.

The KEY,SOCKET HEAD SCREW is a the manufacturer industrial component. Key specifications include material: PLASTIC HANDLE, blade_length: 3.440 INCHES NOMINAL IN, overall_length: 6.625 INCHES NOMINAL IN, style_designator: SCREWDRIVER HANDLE, surface_treatment: OXIDE OVERALL, wrenching_surface_size: 0.063 INCHES NOMINAL SINGLE END IN. This part is cataloged in the U.S.

Government catalog under NSN 5120-00-107-0038, 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
LN21
NSN: 5120-00-107-0038
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
CAGE: 96508 — APEX TOOL GROUP (USA)
SPECIFICATIONS
materialPLASTIC HANDLE
blade_length3.440 INCHES NOMINAL IN
overall_length6.625 INCHES NOMINAL IN
style_designatorSCREWDRIVER HANDLE
surface_treatmentOXIDE OVERALL
wrenching_surface_size0.063 INCHES NOMINAL SINGLE END IN
wrenching_surface_shapeHEXAGON SINGLE END EXTERNAL
specification/standard_data05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5120-00-107-0038
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available KEY,SOCKET HEAD SCREW TITLE COMPONENT PN LN21 MFR KEY,SOCKET HEAD SCREW
KEY FEATURES
•
WRENCHING SURFACE SIZE: 0.063 INCHES NOMINAL SINGLE END IN
•
STYLE DESIGNATOR: SCREWDRIVER HANDLE
•
BLADE LENGTH: 3.440 INCHES NOMINAL IN
•
SPECIFICATION/STANDARD DATA: 05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
WRENCHING SURFACE SHAPE: HEXAGON SINGLE END EXTERNAL
•
SURFACE TREATMENT: OXIDE OVERALL
•
MATERIAL: PLASTIC HANDLE
TECHNICAL CHARACTERISTICS
WRENCHING SURFACE SIZE0.063 INCHES NOMINAL SINGLE END IN
STYLE DESIGNATORSCREWDRIVER HANDLE
OVERALL LENGTH6.625 INCHES NOMINAL IN
BLADE LENGTH3.440 INCHES NOMINAL IN
SPECIFICATION/STANDARD DATA05047-ASME B18.3 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
WRENCHING SURFACE SHAPEHEXAGON SINGLE END EXTERNAL
SURFACE TREATMENTOXIDE OVERALL
MATERIALPLASTIC HANDLE
MATERIALSTEEL WRENCHING SURFACE
SUBSTITUTES & CROSS-REFERENCES 3
B18.3Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
A-A-2926Reference document
Same NSN cross-reference
Reference document — Secondary reference
580R122H02Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is LN21?
LN21 is a KEY,SOCKET HEAD SCREW.
What parts can replace LN21?
There are 3 known substitutes for LN21: B18.3, A-A-2926, 580R122H02. Substitute compatibility should be verified for your specific system.
What is the NSN for LN21?
LN21 is cataloged in the U.S. Government catalog under NSN 5120-00-107-0038. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.