PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T-17Extension,socket Wrench

Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc · NSN 5120-01-577-7840 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-577-7840 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-577-7840. Primary manufacturer part number: T-17.
Features
  • Extension,socket Wrench — FSC 5120
  • 1 verified cross-reference
  • Primary manufacturer: Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Extension,socket Wrench, cataloged under National Stock Number 5120-01-577-7840, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-577-7840
Primary Part NumberT-17
Item NameExtension,socket Wrench
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerBarrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5965-00-128-2512SCD2268 INTERCHANGEABLE
Microphone,carbon
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5975-00-284-9258 INTERCHANGEABLE
Conduit Outlet
2940-00-356-1219C157 INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
6240-00-397-3864030-0038-1 INTERCHANGEABLE
Lamp,thallium Iodide
Raytheon Company Dba Raytheon Co
5660-00-408-8743 INTERCHANGEABLE
Arm Extension,fencing
4520-01-020-7631T-17 INTERCHANGEABLE
Boiler,heating,low Pressure
Trane U.s. Inc. Dba the Trane Co Div Trane Headquarters
4220-01-039-1962 INTERCHANGEABLE
Cylinder,air,diving Equipment
3010-01-049-1010T1-7 INTERCHANGEABLE
Coupling,shaft,flexible
Roller Bearing Co of America, Inc Div Pic Design
4820-01-229-3107 INTERCHANGEABLE
Parts Kit,check Valve
6910-01-659-5231T-17 INTERCHANGEABLE
Equipment Kits
United States Department of Us Army Peo Stri /simulation,training, Instrumentation/
Cross-Reference Index
Part NumberManufacturer
T-17 PRIMARY Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc (USA)
Related Parts
5965-00-128-2512INTERCHANGEABLE
MICROPHONE,CARBON
SCD2268
5975-00-284-9258INTERCHANGEABLE
CONDUIT OUTLET
2940-00-356-1219INTERCHANGEABLE
FILTER ELEMENT,FLUID
C157
6240-00-397-3864INTERCHANGEABLE
LAMP,THALLIUM IODIDE
030-0038-1
5660-00-408-8743INTERCHANGEABLE
ARM EXTENSION,FENCING
4520-01-020-7631INTERCHANGEABLE
BOILER,HEATING,LOW PRESSURE
T-17
4220-01-039-1962INTERCHANGEABLE
CYLINDER,AIR,DIVING EQUIPMENT
3010-01-049-1010INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
T1-7
4820-01-229-3107INTERCHANGEABLE
PARTS KIT,CHECK VALVE
6910-01-659-5231INTERCHANGEABLE
EQUIPMENT KITS
T-17

Frequently Asked Questions

What is NSN 5120-01-577-7840?

NSN 5120-01-577-7840 is a Extension,socket Wrench, manufactured by Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-577-7840?

NSN 5120-01-577-7840 has 1 cross-referenced part number: T-17 (Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc).

What NSN replaces 5120-01-577-7840?

There are 10 known substitutes for 5120-01-577-7840: 5965-00-128-2512, 5975-00-284-9258, 2940-00-356-1219 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T-17?

Key specifications for T-17: Special Features: SHANK DIAMETER:0.3125 INCH IN; Part Name Assigned by Controlling Agency: TOOL, 4 INCH EXTENSION (1/4 INCH DRIVER) IN; Overall Length: 4.000 INCHES NOMINAL IN. 3 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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