PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J5447Ratchet Attachment,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9668 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9668 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9668. Primary manufacturer part number: J5447.
Features
  • Ratchet Attachment,socket Wrench — FSC 5120
  • Style Designator: EXTERNAL-INTERNAL
  • Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN
  • Specification/standard Data: 05047-ASME B107.10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Drive End Shape: SQUARE FIRST END INTERNAL
  • Material: STEEL OVERALL
  • Nondefinitive Spec/std Data: 2 TYPE AND 3 CLASS AND B STYLE
  • Drive End Shape: SQUARE SECOND END EXTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Ratchet Attachment,socket Wrench, cataloged under National Stock Number 5120-01-399-9668, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-399-9668
Primary Part NumberJ5447
Item NameRatchet Attachment,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Style DesignatorEXTERNAL-INTERNAL
Drive Surface Size0.500 INCHES NOMINAL BOTH ENDS IN
Specification/standard Data05047-ASME B107.10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Drive End ShapeSQUARE FIRST END INTERNAL
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data2 TYPE AND 3 CLASS AND B STYLE
Drive End ShapeSQUARE SECOND END EXTERNAL
Surface TreatmentCHROMIUM OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-011-8539118539 INTERCHANGEABLE
Nut,tube Coupling
Rolls-Royce Solutions America Inc
5120-00-227-8129 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-243-7322 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-243-7323 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5120-00-277-1207 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
5945-00-400-82975447 INTERCHANGEABLE
Solenoid,electrical
Rocker Solenoid Co Dba Rocker Solenoid Co
5306-00-474-3503 INTERCHANGEABLE
Bolt,externally Relieved Body
5935-00-628-9237 INTERCHANGEABLE
Connector,receptacle,electrical
5935-01-228-1785901-B0001-2158 INTERCHANGEABLE
Connector,receptacle,electrical
Amphenol Corporation Div Amphenol Rf
5120-01-334-9859 INTERCHANGEABLE
Ratchet Attachment,socket Wrench
Cross-Reference Index
Part NumberManufacturer
1AM49 W.w. Grainger, Inc. Div Government Sales Division (USA)
5447 The Stanley Works Dba Stanley Proto (USA)
B107.10 TY2CL3STB General Services Administration Federal Supply Service (USA)
B107.10 The American Society of Mechanical Engineers (USA)
J5447 PRIMARY The Stanley Works Dba Stanley Proto (USA)
5447 Naval Inventory Control Point Mechanicsburg (USA)
5447 Goodrich Corp Dba Goodrich Corp (USA)
5447 General Microwave Corporation Div Kratos Microwave Electronics (USA)
5447 Leonardo Us Cyber and Security Solutions, Llc (USA)
5447 Microsemi Corp.-Power Management Group Holding Dba Babcock (USA)
5447 Goodrich Corporation (USA)
Related Parts
4730-00-011-8539INTERCHANGEABLE
NUT,TUBE COUPLING
118539
5120-00-227-8129INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-243-7322INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-243-7323INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-00-277-1207INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5945-00-400-8297INTERCHANGEABLE
SOLENOID,ELECTRICAL
5447
5306-00-474-3503INTERCHANGEABLE
BOLT,EXTERNALLY RELIEVED BODY
5935-00-628-9237INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-01-228-1785INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
901-B0001-2158
5120-01-334-9859INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-334-9872INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
5120-01-335-1081INTERCHANGEABLE
RATCHET ATTACHMENT,SOCKET WRENCH
S77A

Frequently Asked Questions

What is NSN 5120-01-399-9668?

NSN 5120-01-399-9668 is a Ratchet Attachment,socket Wrench, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-01-399-9668?

NSN 5120-01-399-9668 has 11 cross-referenced part numbers: 1AM49 (W.w. Grainger, Inc. Div Government Sales Division), 5447 (The Stanley Works Dba Stanley Proto), B107.10 TY2CL3STB (General Services Administration Federal Supply Service), B107.10 (The American Society of Mechanical Engineers), J5447 (The Stanley Works Dba Stanley Proto) and 6 more.

What NSN replaces 5120-01-399-9668?

There are 12 known substitutes for 5120-01-399-9668: 4730-00-011-8539, 5120-00-227-8129, 5120-00-243-7322 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J5447?

Key specifications for J5447: Style Designator: EXTERNAL-INTERNAL; Drive Surface Size: 0.500 INCHES NOMINAL BOTH ENDS IN; Specification/standard Data: 05047-ASME B107.10 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Drive End Shape: SQUARE FIRST END INTERNAL. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-399-9668 still in active supply?

NSN 5120-01-399-9668 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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