PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J5540Socket,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9693 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9693 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9693. Primary manufacturer part number: J5540.
Features
  • Socket,socket Wrench — FSC 5120
  • Features Provided: MANUAL TOOL
  • Wrenching Surface Size: 1.250 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Drive Surface Size: 0.750 INCHES NOMINAL SINGLE END IN
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE
  • Surface Treatment: CHROMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-399-9693, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-399-9693
Primary Part NumberJ5540
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Features ProvidedMANUAL TOOL
Wrenching Surface Size1.250 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Drive Surface Size0.750 INCHES NOMINAL SINGLE END IN
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND A STYLE
Surface TreatmentCHROMIUM OVERALL
Specification/standard Data81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Style DesignatorINTERNAL-INTERNAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-068-4060 INTERCHANGEABLE
Valve,globe
6135-00-120-1017 INTERCHANGEABLE
Battery,nonrechargeable
4730-00-496-75396600152 INTERCHANGEABLE
Nipple,quick-Disconnect
Ed Etnyre & Co
9540-00-998-4466 INTERCHANGEABLE
Channel,structural
3030-01-049-546017385GL INTERCHANGEABLE
Belt,v
Carlisle Power Transmission Products Inc
5940-01-105-26475-540 INTERCHANGEABLE
Terminal Board
Cinch Connectivity Solutions Inc.
6515-01-216-6299305540 INTERCHANGEABLE
Syringe and Needle,hypodermic
Becton, Dickinson and Co Dba Becton Dickinson & Co
5998-01-222-77835540 INTERCHANGEABLE
Printed Wiring Board
Baganoff Engineering Inc Div Manufacturing
7025-01-339-22585540 INTERCHANGEABLE
Terminal,data Processing
Microterm Inc
3810-01-485-82935540 INTERCHANGEABLE
Crane,basic Unit,wheel Mounted
American Material Handling, Inc. Dba American Material Handling Inc
Cross-Reference Index
Part NumberManufacturer
J5540 The Stanley Works Dba Stanley Proto (USA)
1AP48 W.w. Grainger, Inc. Div Government Sales Division (USA)
AS954 Society of Automotive Engineers Inc (USA)
5540 The Stanley Works Dba Stanley Proto (USA)
AS954 TY1CL1STA General Services Administration Federal Supply Service (USA)
STP 5540G Kipper Tool Company Dba Kipper Management Inc (USA)
AS954 Sae International Dba Sae International (USA)
Related Parts
4820-00-068-4060INTERCHANGEABLE
VALVE,GLOBE
6135-00-120-1017INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
4730-00-496-7539INTERCHANGEABLE
NIPPLE,QUICK-DISCONNECT
6600152
9540-00-998-4466INTERCHANGEABLE
CHANNEL,STRUCTURAL
3030-01-049-5460INTERCHANGEABLE
BELT,V
17385GL
5940-01-105-2647INTERCHANGEABLE
TERMINAL BOARD
5-540
6515-01-216-6299INTERCHANGEABLE
SYRINGE AND NEEDLE,HYPODERMIC
305540
5998-01-222-7783INTERCHANGEABLE
PRINTED WIRING BOARD
5540
7025-01-339-2258INTERCHANGEABLE
TERMINAL,DATA PROCESSING
5540
3810-01-485-8293INTERCHANGEABLE
CRANE,BASIC UNIT,WHEEL MOUNTED
5540
6510-01-558-3342INTERCHANGEABLE
BANDAGE,MODULAR
OAL-4
5120-01-652-1452INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 5120-01-399-9693?

NSN 5120-01-399-9693 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 5120-01-399-9693?

NSN 5120-01-399-9693 has 7 cross-referenced part numbers: J5540 (The Stanley Works Dba Stanley Proto), 1AP48 (W.w. Grainger, Inc. Div Government Sales Division), AS954 (Society of Automotive Engineers Inc), 5540 (The Stanley Works Dba Stanley Proto), AS954 TY1CL1STA (General Services Administration Federal Supply Service) and 2 more.

What NSN replaces 5120-01-399-9693?

There are 12 known substitutes for 5120-01-399-9693: 4820-00-068-4060, 6135-00-120-1017, 4730-00-496-7539 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J5540?

Key specifications for J5540: Features Provided: MANUAL TOOL; Wrenching Surface Size: 1.250 INCHES NOMINAL SINGLE END IN; Material: STEEL OVERALL; Drive End Shape: SQUARE SINGLE END INTERNAL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-399-9693 still in active supply?

NSN 5120-01-399-9693 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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