PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-27Screwdriver,flat Tip

Ngk Metals Corporation Dba N G K Berylco · NSN 5120-00-561-8021 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-561-8021 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-561-8021. Primary manufacturer part number: B-27.
Features
  • Screwdriver,flat Tip — FSC 5120
  • Material: COPPER ALLOY BLADE
  • Width: 0.250 INCHES NOMINAL TIP IN
  • Material: PLASTIC HANDLE
  • Thickness: 0.037 INCHES NOMINAL TIP IN
  • Length: 3.750 INCHES NOMINAL BLADE IN
  • Features Provided: FLARED TIP SIDE AND NONSPARKING AND NONMAGNETIC
  • 9 verified cross-references
Applications
  • Applications requiring Copper Alloy Blade construction
General Description

The Screwdriver,flat Tip, cataloged under National Stock Number 5120-00-561-8021, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Ngk Metals Corporation Dba N G K Berylco. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-561-8021
Primary Part NumberB-27
Item NameScrewdriver,flat Tip
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerNgk Metals Corporation Dba N G K Berylco
StatusCANCELLED
MaterialCOPPER ALLOY BLADE
Width0.250 INCHES NOMINAL TIP IN
MaterialPLASTIC HANDLE
Thickness0.037 INCHES NOMINAL TIP IN
Length3.750 INCHES NOMINAL BLADE IN
Features ProvidedFLARED TIP SIDE AND NONSPARKING AND NONMAGNETIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-106-2463 INTERCHANGEABLE
Screwdriver,flat Tip
5355-00-111-2685 INTERCHANGEABLE
Knob
3110-00-144-8662 INTERCHANGEABLE
Bearing,ball,annular
3110-00-155-96281000R83 INTERCHANGEABLE
Bearing,ball,annular
Raytheon Company Dba Raytheon Co
3415-00-188-6967G48 INTERCHANGEABLE
Grinding Machine,jig
Moore Tool Company, Inc.
5120-00-203-95885120-00-203-9588 INTERCHANGEABLE
Screwdriver,flat Tip
Ngk Metals Corporation Dba N G K Berylco
5120-00-236-2132 INTERCHANGEABLE
Screwdriver,flat Tip
5999-00-238-232611273-1-1 INTERCHANGEABLE
Contact,electrical
Ward Leonard Ct Llc
5120-00-270-3112864225PC46 INTERCHANGEABLE
Screwdriver,offset
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5120-00-287-2502 INTERCHANGEABLE
Screwdriver,flat Tip
Cross-Reference Index
Part NumberManufacturer
B-27 PRIMARY Ngk Metals Corporation Dba N G K Berylco (USA)
MIL-S-21111 TY1 General Services Administration Federal Supply Service (USA)
G243101-1 American Telephone and Telegraph Co (USA)
9001263 PRIMARY Us Army Aviation and Missile Command (USA)
A-A-2484 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
G243101-1 PRIMARY Pittsburgh Forgings Co Sub of Ampco Pittsburgh Corp Bensalem Plant (USA)
G48 PRIMARY Ampco Metal Inc. Dba Ampco Metal Inc (USA)
MIL-S-21111 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
G243101-1 At and T Corp (USA)
Related Parts
5120-00-106-2463INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
5355-00-111-2685INTERCHANGEABLE
KNOB
3110-00-144-8662INTERCHANGEABLE
BEARING,BALL,ANNULAR
3110-00-155-9628INTERCHANGEABLE
BEARING,BALL,ANNULAR
1000R83
3415-00-188-6967INTERCHANGEABLE
GRINDING MACHINE,JIG
G48
5120-00-203-9588INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
5120-00-203-9588
5120-00-236-2132INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
5999-00-238-2326INTERCHANGEABLE
CONTACT,ELECTRICAL
11273-1-1
5120-00-270-3112INTERCHANGEABLE
SCREWDRIVER,OFFSET
864225PC46
5120-00-287-2502INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
5120-00-287-2503INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
5120-00-293-1608INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
B-30

Frequently Asked Questions

What is NSN 5120-00-561-8021?

NSN 5120-00-561-8021 is a Screwdriver,flat Tip, manufactured by Ngk Metals Corporation Dba N G K Berylco, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-561-8021?

NSN 5120-00-561-8021 has 9 cross-referenced part numbers: B-27 (Ngk Metals Corporation Dba N G K Berylco), MIL-S-21111 TY1 (General Services Administration Federal Supply Service), G243101-1 (American Telephone and Telegraph Co), 9001263 (Us Army Aviation and Missile Command), A-A-2484 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 4 more.

What NSN replaces 5120-00-561-8021?

There are 12 known substitutes for 5120-00-561-8021: 5120-00-106-2463, 5355-00-111-2685, 3110-00-144-8662 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B-27?

Key specifications for B-27: Material: COPPER ALLOY BLADE; Width: 0.250 INCHES NOMINAL TIP IN; Material: PLASTIC HANDLE; Thickness: 0.037 INCHES NOMINAL TIP IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-561-8021 still in active supply?

NSN 5120-00-561-8021 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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