PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J5215MSocket,socket Wrench

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9722 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9722 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9722. Primary manufacturer part number: J5215M.
Features
  • Socket,socket Wrench — FSC 5120
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Style Designator: INTERNAL-INTERNAL
  • Drive End Shape: SQUARE SINGLE END INTERNAL
  • Material: STEEL OVERALL
  • Features Provided: MANUAL TOOL
  • Wrenching Surface Size: 15.0 MILLIMETERS NOMINAL SINGLE END MM
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-399-9722, 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 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-399-9722
Primary Part NumberJ5215M
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Style DesignatorINTERNAL-INTERNAL
Drive End ShapeSQUARE SINGLE END INTERNAL
MaterialSTEEL OVERALL
Features ProvidedMANUAL TOOL
Wrenching Surface Size15.0 MILLIMETERS NOMINAL SINGLE END MM
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-156-7957 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
5215M The Stanley Works Dba Stanley Proto (USA)
1AK59 W.w. Grainger, Inc. Div Government Sales Division (USA)
J5215M PRIMARY The Stanley Works Dba Stanley Proto (USA)
Related Parts
3110-00-156-7957INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5120-01-399-9722?

NSN 5120-01-399-9722 is a Socket,socket Wrench, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-399-9722?

NSN 5120-01-399-9722 has 3 cross-referenced part numbers: 5215M (The Stanley Works Dba Stanley Proto), 1AK59 (W.w. Grainger, Inc. Div Government Sales Division), J5215M (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-399-9722?

There is 1 known substitute for 5120-01-399-9722: 3110-00-156-7957. Verify interchangeability with system specifications before substitution.

What are the specifications of J5215M?

Key specifications for J5215M: Surface Treatment: CHROMIUM OVERALL; Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL; Style Designator: INTERNAL-INTERNAL; Drive End Shape: SQUARE SINGLE END INTERNAL. 9 total characteristics are documented in the Federal Logistics Information System.

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