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56-7521-1 — SOCKET,SOCKET WRENCH

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

56-7521-1: SOCKET,SOCKET WRENCH.

The SOCKET,SOCKET WRENCH is a the manufacturer industrial component. Key specifications include drive_end_shape: SQUARE SINGLE END INTERNAL, style_designator: INTERNAL-INTERNAL, features_provided: MANUAL TOOL, drive_surface_size: 0.750 INCHES NOMINAL SINGLE END IN, wrenching_surface_size: 1.375 INCHES NOMINAL SINGLE END IN, wrenching_surface_shape: 6 POINT SINGLE END INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 5120-00-596-0793, 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
56-7521-1
NSN: 5120-00-596-0793
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
CAGE: 81205 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
drive_end_shapeSQUARE SINGLE END INTERNAL
style_designatorINTERNAL-INTERNAL
features_providedMANUAL TOOL
drive_surface_size0.750 INCHES NOMINAL SINGLE END IN
wrenching_surface_size1.375 INCHES NOMINAL SINGLE END IN
wrenching_surface_shape6 POINT SINGLE END INTERNAL
NSN5120-00-596-0793
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SOCKET,SOCKET WRENCH TITLE COMPONENT PN 56-7521-1 MFR SOCKET,SOCKET WRENCH
KEY FEATURES
•
DRIVE SURFACE SIZE: 0.750 INCHES NOMINAL SINGLE END IN
•
WRENCHING SURFACE SIZE: 1.375 INCHES NOMINAL SINGLE END IN
•
STYLE DESIGNATOR: INTERNAL-INTERNAL
•
FEATURES PROVIDED: MANUAL TOOL
•
WRENCHING SURFACE SHAPE: 6 POINT SINGLE END INTERNAL
•
DRIVE END SHAPE: SQUARE SINGLE END INTERNAL
TECHNICAL CHARACTERISTICS
DRIVE SURFACE SIZE0.750 INCHES NOMINAL SINGLE END IN
WRENCHING SURFACE SIZE1.375 INCHES NOMINAL SINGLE END IN
STYLE DESIGNATORINTERNAL-INTERNAL
FEATURES PROVIDEDMANUAL TOOL
WRENCHING SURFACE SHAPE6 POINT SINGLE END INTERNAL
DRIVE END SHAPESQUARE SINGLE END INTERNAL
OTHER ITEMS IN FSC 5120 — Hand Tools, Nonedged, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5120-00-001-2642 5120-00-001-2644 5120-00-001-2650 5120-00-001-2651 5120-00-001-2652 5120-00-001-2653 5120-00-001-2654 5120-00-001-2655
SUBSTITUTES & CROSS-REFERENCES 1
3264007Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 56-7521-1?
56-7521-1 is a SOCKET,SOCKET WRENCH.
What parts can replace 56-7521-1?
There is 1 known substitute for 56-7521-1: 3264007. Substitute compatibility should be verified for your specific system.
What is the NSN for 56-7521-1?
56-7521-1 is cataloged in the U.S. Government catalog under NSN 5120-00-596-0793. 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.