PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66-089Screwdriver,flat Tip

The Stanley Works Dba Stanley Proto · NSN 5120-01-677-2259 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-677-2259 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-677-2259. Primary manufacturer part number: 66-089.
Features
  • Screwdriver,flat Tip — FSC 5120
  • Criticality Code Justification: ZZZY
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • 1 verified cross-reference
  • Primary manufacturer: The Stanley Works Dba Stanley Proto
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Screwdriver,flat Tip, cataloged under National Stock Number 5120-01-677-2259, 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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-677-2259
Primary Part Number66-089
Item NameScrewdriver,flat Tip
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Criticality Code JustificationZZZY
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-01-149-8358 INTERCHANGEABLE
Gasket
3030-01-270-5848B89-3 INTERCHANGEABLE
Belts,v,matched Set
Carlisle Power Transmission Products Inc
5120-01-591-837466-089 INTERCHANGEABLE
Screwdriver,flat Tip
The Stanley Works Dba Stanley Proto
1290-01-608-606766089 INTERCHANGEABLE
Support,fire Control System Comp
Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc
Cross-Reference Index
Part NumberManufacturer
66-089 The Stanley Works Dba Stanley Proto (USA)
Related Parts
5330-01-149-8358INTERCHANGEABLE
GASKET
3030-01-270-5848INTERCHANGEABLE
BELTS,V,MATCHED SET
B89-3
5120-01-591-8374INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
66-089
1290-01-608-6067INTERCHANGEABLE
SUPPORT,FIRE CONTROL SYSTEM COMP
66089

Frequently Asked Questions

What is NSN 5120-01-677-2259?

NSN 5120-01-677-2259 is a Screwdriver,flat Tip, 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 5120-01-677-2259?

NSN 5120-01-677-2259 has 1 cross-referenced part number: 66-089 (The Stanley Works Dba Stanley Proto).

What NSN replaces 5120-01-677-2259?

There are 4 known substitutes for 5120-01-677-2259: 5330-01-149-8358, 3030-01-270-5848, 5120-01-591-8374 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66-089?

Key specifications for 66-089: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVSUP-WSS ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 2 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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