PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

39-019Socket,socket Wrench

Armstrong Bros Tool Co · NSN 5120-01-579-0965 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-579-0965 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-579-0965. Primary manufacturer part number: 39-019.
Features
  • Socket,socket Wrench — FSC 5120
  • Wrenching End Outside Diameter: 26.3 MILLIMETERS NOMINAL MM
  • Drive End Outside Diameter: 26.3 MILLIMETERS NOMINAL MM
  • Wrenching End Opening Depth: 19.1 MILLIMETERS NOMINAL MM
  • Style Designator: INTERNAL-INTERNAL
  • Wrenching Surface Size: 19.0 MILLIMETERS NOMINAL SINGLE END MM
  • Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Shape: 6 POINT SINGLE END INTERNAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Socket,socket Wrench, cataloged under National Stock Number 5120-01-579-0965, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Bros Tool Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-579-0965
Primary Part Number39-019
Item NameSocket,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
Wrenching End Outside Diameter26.3 MILLIMETERS NOMINAL MM
Drive End Outside Diameter26.3 MILLIMETERS NOMINAL MM
Wrenching End Opening Depth19.1 MILLIMETERS NOMINAL MM
Style DesignatorINTERNAL-INTERNAL
Wrenching Surface Size19.0 MILLIMETERS NOMINAL SINGLE END MM
Drive Surface Size0.500 INCHES NOMINAL SINGLE END IN
Wrenching Surface Shape6 POINT SINGLE END INTERNAL
MaterialSTEEL OVERALL
Drive End ShapeSQUARE SINGLE END INTERNAL
Surface TreatmentCHROMIUM OVERALL
Features ProvidedMANUAL TOOL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4310-00-097-826539019 INTERCHANGEABLE
Ring,piston
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
5985-00-247-859515110 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Dow-Key Microwave Llc
4820-00-800-712239019 INTERCHANGEABLE
Valve,main
Griswold Industries Dba Cla-Val Co
6530-01-258-0964390-19 INTERCHANGEABLE
Strap,restraint,hospital Stretch
Stryker Corporation Div Use for Open Payments Only
5930-01-289-9522 INTERCHANGEABLE
Switch,slide
Cross-Reference Index
Part NumberManufacturer
39-019 Armstrong Bros Tool Co (USA)
39-019 Apex Tool Group, Llc Dba Nicholson (USA)
39-019 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
4310-00-097-8265INTERCHANGEABLE
RING,PISTON
39019
5985-00-247-8595INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
15110
4820-00-800-7122INTERCHANGEABLE
VALVE,MAIN
39019
6530-01-258-0964INTERCHANGEABLE
STRAP,RESTRAINT,HOSPITAL STRETCH
390-19
5930-01-289-9522INTERCHANGEABLE
SWITCH,SLIDE

Frequently Asked Questions

What is NSN 5120-01-579-0965?

NSN 5120-01-579-0965 is a Socket,socket Wrench, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-579-0965?

NSN 5120-01-579-0965 has 3 cross-referenced part numbers: 39-019 (Armstrong Bros Tool Co), 39-019 (Apex Tool Group, Llc Dba Nicholson), 39-019 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-579-0965?

There are 5 known substitutes for 5120-01-579-0965: 4310-00-097-8265, 5985-00-247-8595, 4820-00-800-7122 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 39-019?

Key specifications for 39-019: Wrenching End Outside Diameter: 26.3 MILLIMETERS NOMINAL MM; Drive End Outside Diameter: 26.3 MILLIMETERS NOMINAL MM; Wrenching End Opening Depth: 19.1 MILLIMETERS NOMINAL MM; Style Designator: INTERNAL-INTERNAL. 12 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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