PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5542Socket,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9688 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9688 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9688. Primary manufacturer part number: 5542.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Wrenching Surface Size: 1.312 INCHES NOMINAL SINGLE END IN
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE
  • Specification/standard Data: 81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Style Designator: INTERNAL-INTERNAL
  • Features Provided: MANUAL TOOL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-399-9688, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-399-9688
Primary Part Number5542
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
Wrenching Surface Size1.312 INCHES NOMINAL SINGLE END IN
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND A STYLE
Specification/standard Data81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorINTERNAL-INTERNAL
Features ProvidedMANUAL TOOL
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Drive Surface Size0.750 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
3120-00-457-58525542 INTERCHANGEABLE
Bushing,sleeve
Eaton Corporation Div Eaton Fluid Power
4810-00-511-52675542 INTERCHANGEABLE
Valve,linear,directional Control
Circor Aerospace, Inc. Div Circor
8010-00-598-5474 INTERCHANGEABLE
Paint,heat Resisting
5935-00-868-4219 INTERCHANGEABLE
Jackscrew,electrical Connector
5975-01-221-37735542 INTERCHANGEABLE
Box Connector,electrical
Woodhead, Lp Dba Woodhead Div Integrated Products Group
5120-01-652-1451 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
5542 The Stanley Works Dba Stanley Proto (USA)
STP 5542G Kipper Tool Company Dba Kipper Management Inc (USA)
J5542 The Stanley Works Dba Stanley Proto (USA)
AS954 TY1CL1STA General Services Administration Federal Supply Service (USA)
1AP49 W.w. Grainger, Inc. Div Government Sales Division (USA)
AS954 Society of Automotive Engineers Inc (USA)
AS954 Sae International Dba Sae International (USA)
Related Parts
3120-00-457-5852INTERCHANGEABLE
BUSHING,SLEEVE
5542
4810-00-511-5267INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
5542
8010-00-598-5474INTERCHANGEABLE
PAINT,HEAT RESISTING
5935-00-868-4219INTERCHANGEABLE
JACKSCREW,ELECTRICAL CONNECTOR
5975-01-221-3773INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5542
5120-01-652-1451INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-01-399-9688?

NSN 5120-01-399-9688 is a Socket,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 5120-01-399-9688?

NSN 5120-01-399-9688 has 7 cross-referenced part numbers: 5542 (The Stanley Works Dba Stanley Proto), STP 5542G (Kipper Tool Company Dba Kipper Management Inc), J5542 (The Stanley Works Dba Stanley Proto), AS954 TY1CL1STA (General Services Administration Federal Supply Service), 1AP49 (W.w. Grainger, Inc. Div Government Sales Division) and 2 more.

What NSN replaces 5120-01-399-9688?

There are 6 known substitutes for 5120-01-399-9688: 3120-00-457-5852, 4810-00-511-5267, 8010-00-598-5474 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5542?

Key specifications for 5542: Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL; Drive End Shape: SQUARE SINGLE END INTERNAL; Wrenching Surface Size: 1.312 INCHES NOMINAL SINGLE END IN; Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-399-9688 still in active supply?

NSN 5120-01-399-9688 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.
PartsTable Design LLC · partstable.com