PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5212HSocket,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9584 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9584 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9584. Primary manufacturer part number: 5212H.
Features
  • Socket,socket Wrench — FSC 5120
  • Nondefinitive Spec/std Data: 1 TYPE
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Shape: 6 POINT SINGLE END INTERNAL
  • Wrenching Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL
  • Surface Treatment: CHROMIUM OVERALL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-399-9584, 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 10 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-399-9584
Primary Part Number5212H
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Nondefinitive Spec/std Data1 TYPE
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Shape6 POINT SINGLE END INTERNAL
Wrenching Surface Size0.375 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL
Surface TreatmentCHROMIUM OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Specification/standard Data05047-ASME B107.110 CAT 1 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MaterialSTEEL OVERALL
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-156-474111989A INTERCHANGEABLE
Bearing,ball,annular
Brinkley Technology Group Llc Dba Hercules Manufacturing
3110-00-554-3411 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
5212H The Stanley Works Dba Stanley Proto (USA)
J5212H Henchman Products Pty Ltd (AUS)
B107.1 TY1CL1 General Services Administration Federal Supply Service (USA)
J5212H The Stanley Works Dba Stanley Proto (USA)
B107.1 The American Society of Mechanical Engineers (USA)
B107.110 CAT 1 TY1 General Services Administration Federal Supply Service (USA)
J5212H Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS)
B107.110 The American Society of Mechanical Engineers (USA)
1AK84 W.w. Grainger, Inc. Div Government Sales Division (USA)
STP 5212H Kipper Tool Company Dba Kipper Management Inc (USA)
Related Parts
3110-00-156-4741INTERCHANGEABLE
BEARING,BALL,ANNULAR
11989A
3110-00-554-3411INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5120-01-399-9584?

NSN 5120-01-399-9584 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 5120-01-399-9584?

NSN 5120-01-399-9584 has 10 cross-referenced part numbers: 5212H (The Stanley Works Dba Stanley Proto), J5212H (Henchman Products Pty Ltd), B107.1 TY1CL1 (General Services Administration Federal Supply Service), J5212H (The Stanley Works Dba Stanley Proto), B107.1 (The American Society of Mechanical Engineers) and 5 more.

What NSN replaces 5120-01-399-9584?

There are 2 known substitutes for 5120-01-399-9584: 3110-00-156-4741, 3110-00-554-3411. Verify interchangeability with system specifications before substitution.

What are the specifications of 5212H?

Key specifications for 5212H: Nondefinitive Spec/std Data: 1 TYPE; Style Designator: INTERNAL-INTERNAL; Wrenching Surface Shape: 6 POINT SINGLE END INTERNAL; Wrenching Surface Size: 0.375 INCHES NOMINAL SINGLE END IN. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-399-9584 still in active supply?

NSN 5120-01-399-9584 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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