PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3581-7Tang Break Off Tool

Armstrong Precision Components Ltd · NSN 5120-00-793-1085 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-793-1085 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-793-1085. Primary manufacturer part number: 3581-7.
Features
  • Tang Break Off Tool — FSC 5120
  • 2 verified cross-references
  • Primary manufacturer: Armstrong Precision Components Ltd
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Tang Break Off Tool, cataloged under National Stock Number 5120-00-793-1085, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Precision Components Ltd. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameTang Break Off Tool
FSC / FSG5120 — No Item Name Available (FSG 51)
ManufacturersArmstrong Precision Components Ltd (CAGE K1012); Stanley Engineered Fastening Llc (CAGE 01556)
Technical Specifications
ParameterValue
NSN5120-00-793-1085
Primary Part Number3581-7
Item NameTang Break Off Tool
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Precision Components Ltd
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5325-00-141-4002127H-5 INTERCHANGEABLE
Eyelet,turnlock Fastener
Southco Inc
5999-01-161-5362 INTERCHANGEABLE
Gear and Extension
3020-01-413-404035817 INTERCHANGEABLE
Gear,spur
Aerosonic Llc
Cross-Reference Index
Part NumberManufacturer
3581-7 Armstrong Precision Components Ltd (GBR)
3581-7 Stanley Engineered Fastening Llc (USA)
Related Parts
5325-00-141-4002INTERCHANGEABLE
EYELET,TURNLOCK FASTENER
127H-5
5999-01-161-5362INTERCHANGEABLE
GEAR AND EXTENSION
3020-01-413-4040INTERCHANGEABLE
GEAR,SPUR
35817

Frequently Asked Questions

What is NSN 5120-00-793-1085?

NSN 5120-00-793-1085 is a Tang Break Off Tool, manufactured by Armstrong Precision Components Ltd, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-793-1085?

NSN 5120-00-793-1085 has 2 cross-referenced part numbers: 3581-7 (Armstrong Precision Components Ltd), 3581-7 (Stanley Engineered Fastening Llc).

What NSN replaces 5120-00-793-1085?

There are 3 known substitutes for 5120-00-793-1085: 5325-00-141-4002, 5999-01-161-5362, 3020-01-413-4040. Verify interchangeability with system specifications before substitution.

Is NSN 5120-00-793-1085 still in active supply?

NSN 5120-00-793-1085 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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