PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

000-S2A/120121Bit,screwdriver

Mountz, Inc. · NSN 5120-00-021-2004 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-021-2004 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-021-2004. Primary manufacturer part number: 000-S2A/120121.
Features
  • Bit,screwdriver — FSC 5120
  • Width Across Flats: 0.141 INCHES NOMINAL IN
  • Tip Type: MALE HEXAGONAL
  • Drive Shank Type: HEXAGON
  • Shank Width Across Wrench Flats: 0.250 INCHES NOMINAL IN
  • 7 verified cross-references
  • Primary manufacturer: Mountz, Inc.
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Bit,screwdriver, cataloged under National Stock Number 5120-00-021-2004, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Mountz, Inc.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-021-2004
Primary Part Number000-S2A/120121
Item NameBit,screwdriver
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerMountz, Inc.
StatusCANCELLED
Width Across Flats0.141 INCHES NOMINAL IN
Tip TypeMALE HEXAGONAL
Drive Shank TypeHEXAGON
Shank Width Across Wrench Flats0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
5975-00-009-7020 INTERCHANGEABLE
Fitting
4820-00-036-1754005-500-0012 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4730-00-096-6028A-18510 INTERCHANGEABLE
Plug,pipe
Jenny Products, Inc
6505-00-174-7141 INTERCHANGEABLE
Water for Injection,sterile
5306-00-285-3532X04 INTERCHANGEABLE
Bolt,machine
Strong Forge & Fabrication, Llc
2530-00-353-0435222821 INTERCHANGEABLE
Adjuster,slack,brake
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
3020-00-430-949318510 INTERCHANGEABLE
Gear,bevel
Komatsu America Corporation
1040-00-936-929454A50E12 INTERCHANGEABLE
Valve Assy,tank
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6150-01-216-4895B20313-2T INTERCHANGEABLE
Bus,conductor
Circuit Components Inc.
2530-01-614-123818510 INTERCHANGEABLE
Master Cylinder Power Unit
Silver Eagle Manufacturing Co
Cross-Reference Index
Part NumberManufacturer
37476 Magna Div Vermont American Corp (USA)
000-S2A/120121 PRIMARY Mountz, Inc. (USA)
8710-1241 Hewlett-Packard Company Dba HP (USA)
185-10 PRIMARY Apex Tool Group, Llc (USA)
000-S2A Mountz D G Associates Inc (USA)
819132 Dresser Industries Inc Dresser Magcobar Div (USA)
34254-2 Magna Div Vermont American Corp (USA)
Related Parts
5975-00-009-7020INTERCHANGEABLE
FITTING
4820-00-036-1754INTERCHANGEABLE
DISK,VALVE
005-500-0012
4730-00-096-6028INTERCHANGEABLE
PLUG,PIPE
A-18510
6505-00-174-7141INTERCHANGEABLE
WATER FOR INJECTION,STERILE
5306-00-285-3532INTERCHANGEABLE
BOLT,MACHINE
X04
2530-00-353-0435INTERCHANGEABLE
ADJUSTER,SLACK,BRAKE
222821
3020-00-430-9493INTERCHANGEABLE
GEAR,BEVEL
18510
1040-00-936-9294INTERCHANGEABLE
VALVE ASSY,TANK
54A50E12
6150-01-216-4895INTERCHANGEABLE
BUS,CONDUCTOR
B20313-2T
2530-01-614-1238INTERCHANGEABLE
MASTER CYLINDER POWER UNIT
18510
2530-01-649-8137INTERCHANGEABLE
ROTOR,DISC BRAKE
1001661

Frequently Asked Questions

What is NSN 5120-00-021-2004?

NSN 5120-00-021-2004 is a Bit,screwdriver, manufactured by Mountz, Inc., classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-021-2004?

NSN 5120-00-021-2004 has 7 cross-referenced part numbers: 37476 (Magna Div Vermont American Corp), 000-S2A/120121 (Mountz, Inc.), 8710-1241 (Hewlett-Packard Company Dba HP), 185-10 (Apex Tool Group, Llc), 000-S2A (Mountz D G Associates Inc) and 2 more.

What NSN replaces 5120-00-021-2004?

There are 11 known substitutes for 5120-00-021-2004: 5975-00-009-7020, 4820-00-036-1754, 4730-00-096-6028 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 000-S2A/120121?

Key specifications for 000-S2A/120121: Width Across Flats: 0.141 INCHES NOMINAL IN; Tip Type: MALE HEXAGONAL; Drive Shank Type: HEXAGON; Shank Width Across Wrench Flats: 0.250 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-021-2004 still in active supply?

NSN 5120-00-021-2004 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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