PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5544Socket,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9691 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9691 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9691. Primary manufacturer part number: 5544.
Features
  • Socket,socket Wrench — FSC 5120
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Size: 1.375 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS AND A STYLE
  • Specification/standard Data: 0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Drive Surface Size: 0.750 INCHES NOMINAL SINGLE END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-399-9691, 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-399-9691
Primary Part Number5544
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Drive End ShapeSQUARE SINGLE END INTERNAL
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size1.375 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS AND A STYLE
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Drive Surface Size0.750 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5340-00-155-480810352A1032-2 INTERCHANGEABLE
Handle,bow
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
5960-00-272-9194 INTERCHANGEABLE
Electron Tube
5305-00-329-86155544 INTERCHANGEABLE
Screw,anchor
C E B Corp
3110-00-606-6435S1403-9 INTERCHANGEABLE
Retainer and Rollers,bearing
Simmonds Precision Products Inc
5306-01-135-7904 INTERCHANGEABLE
Bolt,machine
6680-01-157-8990 INTERCHANGEABLE
Gage Rod-Cap,liquid Level
6145-01-160-40335544 INTERCHANGEABLE
Cable,power,electrical
Belden, Inc.
5915-01-160-7122293-1284-011 INTERCHANGEABLE
Filter,band Pass
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4130-01-306-07095544 INTERCHANGEABLE
Condenser Coil,refrigeration
Howell Laboratories Inc Dba Howell Laboratories Inc
6515-01-328-19065544 INTERCHANGEABLE
Condom
Ansell Inc Sub of Ansell Intl
Cross-Reference Index
Part NumberManufacturer
5544 The Stanley Works Dba Stanley Proto (USA)
AS954 Society of Automotive Engineers Inc (USA)
AS954 Sae International Dba Sae International (USA)
J5544 The Stanley Works Dba Stanley Proto (USA)
1AP50 W.w. Grainger, Inc. Div Government Sales Division (USA)
AS954 TY1CL1STA General Services Administration Federal Supply Service (USA)
STP 5544G Kipper Tool Company Dba Kipper Management Inc (USA)
Related Parts
5340-00-155-4808INTERCHANGEABLE
HANDLE,BOW
10352A1032-2
5960-00-272-9194INTERCHANGEABLE
ELECTRON TUBE
5305-00-329-8615INTERCHANGEABLE
SCREW,ANCHOR
5544
3110-00-606-6435INTERCHANGEABLE
RETAINER AND ROLLERS,BEARING
S1403-9
5306-01-135-7904INTERCHANGEABLE
BOLT,MACHINE
6680-01-157-8990INTERCHANGEABLE
GAGE ROD-CAP,LIQUID LEVEL
6145-01-160-4033INTERCHANGEABLE
CABLE,POWER,ELECTRICAL
5544
5915-01-160-7122INTERCHANGEABLE
FILTER,BAND PASS
293-1284-011
4130-01-306-0709INTERCHANGEABLE
CONDENSER COIL,REFRIGERATION
5544
6515-01-328-1906INTERCHANGEABLE
CONDOM
5544

Frequently Asked Questions

What is NSN 5120-01-399-9691?

NSN 5120-01-399-9691 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 5120-01-399-9691?

NSN 5120-01-399-9691 has 7 cross-referenced part numbers: 5544 (The Stanley Works Dba Stanley Proto), AS954 (Society of Automotive Engineers Inc), AS954 (Sae International Dba Sae International), J5544 (The Stanley Works Dba Stanley Proto), 1AP50 (W.w. Grainger, Inc. Div Government Sales Division) and 2 more.

What NSN replaces 5120-01-399-9691?

There are 10 known substitutes for 5120-01-399-9691: 5340-00-155-4808, 5960-00-272-9194, 5305-00-329-8615 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5544?

Key specifications for 5544: Drive End Shape: SQUARE SINGLE END INTERNAL; Style Designator: INTERNAL-INTERNAL; Wrenching Surface Size: 1.375 INCHES NOMINAL SINGLE END IN; Material: STEEL OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-399-9691 still in active supply?

NSN 5120-01-399-9691 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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