PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J5239-27WScrewdriver Attachment,socket Wr

The Stanley Works Dba Stanley Proto · NSN 5120-01-399-9789 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-399-9789 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-399-9789. Primary manufacturer part number: J5239-27W.
Features
  • Screwdriver Attachment,socket Wr — FSC 5120
  • Surface Treatment: OXIDE BIT
  • Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN
  • Features Provided: MANUAL TOOL AND REPLACEABLE BIT
  • Surface Treatment: CHROMIUM DRIVE SURFACE
  • Style Designator: TORX
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: 6 POINT STAR SINGLE END EXTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Screwdriver Attachment,socket Wr, cataloged under National Stock Number 5120-01-399-9789, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-01-399-9789
Primary Part NumberJ5239-27W
Item NameScrewdriver Attachment,socket Wr
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Surface TreatmentOXIDE BIT
Drive Surface Size0.375 INCHES NOMINAL SINGLE END IN
Features ProvidedMANUAL TOOL AND REPLACEABLE BIT
Surface TreatmentCHROMIUM DRIVE SURFACE
Style DesignatorTORX
MaterialSTEEL OVERALL
Wrenching Surface Shape6 POINT STAR SINGLE END EXTERNAL
Blade Length0.688 INCHES NOMINAL IN
Tip Size DesignationT27
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5120-01-078-189922939 INTERCHANGEABLE
Screwdriver Attachment,socket Wr
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
5239-27W The Stanley Works Dba Stanley Proto (USA)
5C619 W.w. Grainger, Inc. Div Government Sales Division (USA)
J5239-27W Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS)
STP 5239-27W Kipper Tool Company Dba Kipper Management Inc (USA)
J5239-27W PRIMARY The Stanley Works Dba Stanley Proto (USA)
J5239-27W Henchman Products Pty Ltd (AUS)
Related Parts
5120-01-078-1899INTERCHANGEABLE
SCREWDRIVER ATTACHMENT,SOCKET WR
22939

Frequently Asked Questions

What is NSN 5120-01-399-9789?

NSN 5120-01-399-9789 is a Screwdriver Attachment,socket Wr, 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 5120-01-399-9789?

NSN 5120-01-399-9789 has 6 cross-referenced part numbers: 5239-27W (The Stanley Works Dba Stanley Proto), 5C619 (W.w. Grainger, Inc. Div Government Sales Division), J5239-27W (Henchman Group Pty Ltd the Trustee for Henchman Unit Trust), STP 5239-27W (Kipper Tool Company Dba Kipper Management Inc), J5239-27W (The Stanley Works Dba Stanley Proto) and 1 more.

What NSN replaces 5120-01-399-9789?

There is 1 known substitute for 5120-01-399-9789: 5120-01-078-1899. Verify interchangeability with system specifications before substitution.

What are the specifications of J5239-27W?

Key specifications for J5239-27W: Overall Length: 1.844 INCHES NOMINAL IN; Surface Treatment: OXIDE BIT; Drive Surface Size: 0.375 INCHES NOMINAL SINGLE END IN; Features Provided: MANUAL TOOL AND REPLACEABLE BIT. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-01-399-9789 still in active supply?

NSN 5120-01-399-9789 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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