PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

TTA4Tool Set,fastener Installation

Southco Inc · NSN 5120-00-498-5321 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-498-5321 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-498-5321. Primary manufacturer part number: TTA4.
Features
  • Tool Set,fastener Installation — FSC 5120
  • General Characteristics Item Description: FOR DZUS TYPE A4 FASTENERS; CONSISTS OF FASTENER SETTING TOOL AND SETTING BLOCK NO. 1
  • 5 verified cross-references
  • Primary manufacturer: Southco Inc
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Tool Set,fastener Installation, cataloged under National Stock Number 5120-00-498-5321, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Southco Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-498-5321
Primary Part NumberTTA4
Item NameTool Set,fastener Installation
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerSouthco Inc
StatusACTIVE
General Characteristics Item DescriptionFOR DZUS TYPE A4 FASTENERS; CONSISTS OF FASTENER SETTING TOOL AND SETTING BLOCK NO. 1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5915-00-078-85613197 INTERCHANGEABLE
Filter,radio Frequency Interfere
Aerocontrolex Group, Inc. Div Talley Actuators
2510-00-495-94957371821 INTERCHANGEABLE
Catch
U S Army Tank Automotive Command Amsta-Im-Mm
5910-00-666-6760A3197 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
Cardwell Condenser Corp Lapointe-Admiral Div
3020-01-090-5048A3197 INTERCHANGEABLE
Gear,spur
American Precision Gear Company Dba American Precision Gear Co Div Same
5305-01-351-1273 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
TTA4 Southco Inc (USA)
A4 Southco Inc (USA)
A3-197 Viking Technologies, Ltd. (USA)
9920-1-4 Southco Inc (USA)
WFA1120 Viking Technologies, Ltd. (USA)
Related Parts
5915-00-078-8561INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
3197
2510-00-495-9495INTERCHANGEABLE
CATCH
7371821
5910-00-666-6760INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
A3197
3020-01-090-5048INTERCHANGEABLE
GEAR,SPUR
A3197
5305-01-351-1273INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5120-00-498-5321?

NSN 5120-00-498-5321 is a Tool Set,fastener Installation, manufactured by Southco Inc, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-498-5321?

NSN 5120-00-498-5321 has 5 cross-referenced part numbers: TTA4 (Southco Inc), A4 (Southco Inc), A3-197 (Viking Technologies, Ltd.), 9920-1-4 (Southco Inc), WFA1120 (Viking Technologies, Ltd.).

What NSN replaces 5120-00-498-5321?

There are 5 known substitutes for 5120-00-498-5321: 5915-00-078-8561, 2510-00-495-9495, 5910-00-666-6760 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of TTA4?

Key specifications for TTA4: General Characteristics Item Description: FOR DZUS TYPE A4 FASTENERS; CONSISTS OF FASTENER SETTING TOOL AND SETTING BLOCK NO. 1. 1 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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