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NSN 5120-01-399-9727Government record, cited

Socket, Socket Wrench5120-01-399-9727

NSN 5120-01-399-9727 · NIIN 013999727 · Part number 5546M
The Stanley Works Dba Stanley Proto · FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools · CAGE 1CV05
Government record, cited
NSN 5120-01-399-9727 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9727. Manufacturer of record part number: 5546M.
Also searched as  5120-01-399-9727 · 5120013999727 · NIIN 013999727 · 01-399-9727 · FSC 5120 Hand Tools, Nonedged, Nonpowered · CAGE 1CV05 · 5546M · 1AP82
Nearby stock numbers  ·
Features
  • Socket,socket Wrench — FSC 5120
  • Drive Surface Size: 0.750 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Size: 46.0 MILLIMETERS NOMINAL SINGLE END MM
  • Style Designator: INTERNAL-INTERNAL
  • Features Provided: MANUAL TOOL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Surface Treatment: CHROMIUM OVERALL
Identification
  • NSN: 5120-01-399-9727
  • NIIN: 013999727
  • FSC: 5120 — Hand Tools, Nonedged, Nonpowered
  • FSG: 51 — Hand Tools
  • Primary part number: 5546M
  • Manufacturer: The Stanley Works Dba Stanley Proto
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-399-9727, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-399-9727
Primary Part Number5546M
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — Hand Tools, Nonedged, Nonpowered
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Drive Surface Size0.750 INCHES NOMINAL SINGLE END IN
Wrenching Surface Size46.0 MILLIMETERS NOMINAL SINGLE END MM
Style DesignatorINTERNAL-INTERNAL
Features ProvidedMANUAL TOOL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
1AP82 W.w. Grainger, Inc. Div Government Sales Division (USA)
5546M PRIMARY The Stanley Works Dba Stanley Proto (USA)
No interchangeability data on file.
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
ADAPTER,TORQUE WRENCH
5120-00-001-2644
ADAPTER,TORQUE WRENCH
5120-00-001-2650
INSERTER,SEAL
5120-00-001-2651
5120-00-001-2651 · Item name not on file
5120-00-001-2652
INSTALLING TOOL,SHAFT
5120-00-001-2653
REMOVER,PREFORMED PACKING
5120-00-001-2654
REMOVER,PREFORMED PACKING
5120-00-001-2655
SOCKET,WRENCH,FACE SPANNER

Frequently Asked Questions

What is NSN 5120-01-399-9727?

NSN 5120-01-399-9727 is a Socket,socket Wrench, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.

What part numbers are listed for NSN 5120-01-399-9727?

NSN 5120-01-399-9727 has 2 manufacturer part numbers on file: 1AP82 (W.w. Grainger, Inc. Div Government Sales Division), 5546M (The Stanley Works Dba Stanley Proto).

What are the specifications of 5546M?

Key specifications for 5546M: Drive Surface Size: 0.750 INCHES NOMINAL SINGLE END IN; Wrenching Surface Size: 46.0 MILLIMETERS NOMINAL SINGLE END MM; Style Designator: INTERNAL-INTERNAL; Overall Length: 75.4 MILLIMETERS NOMINAL MM. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5120-01-399-9727 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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