PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56128Key Set,socket Head Screw

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-431-1120 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-431-1120 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-431-1120. Primary manufacturer part number: 56128.
Features
  • Key Set,socket Head Screw — FSC 5120
  • Key Characteristic: CONTAINS HEX KEYS SIZE 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8 AND 1/2 IN. IN
  • Container Type: CASE
  • Key Quantity: 13
  • Handle Type: L-STYLE
  • Features Provided: LONG SERIES
  • 4 verified cross-references
  • Primary manufacturer: Apex Tool Group, Llc Dba Nicholson
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
General Description

The Key Set,socket Head Screw, cataloged under National Stock Number 5120-01-431-1120, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Apex Tool Group, Llc Dba Nicholson. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-431-1120
Primary Part Number56128
Item NameKey Set,socket Head Screw
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Key CharacteristicCONTAINS HEX KEYS SIZE 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8 AND 1/2 IN. IN
Container TypeCASE
Key Quantity13
Handle TypeL-STYLE
Features ProvidedLONG SERIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5905-00-407-2567138C211H06 INTERCHANGEABLE
Resistor Network,fixed,wire Woun
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
3020-00-523-8663 INTERCHANGEABLE
Gear,spur
4730-00-821-02517974046 INTERCHANGEABLE
Clamp,hose
U S Army Tank Automotive Command Amsta-Im-Mm
5340-01-101-8262COV-1309Z2 INTERCHANGEABLE
Clamp,loop
Kickhaefer Manufacturing Company, Llc Dba Kickhaefer Manufacturing Co
5905-01-113-0341 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5340-01-149-524556128 INTERCHANGEABLE
Pad
Alliance Laundry Systems Llc
Cross-Reference Index
Part NumberManufacturer
56128 Apex Tool Group, Llc Dba Nicholson (USA)
56128 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
56128 Easco Hand Tools Inc (USA)
B18.3 The American Society of Mechanical Engineers (USA)
Related Parts
5905-00-407-2567INTERCHANGEABLE
RESISTOR NETWORK,FIXED,WIRE WOUN
138C211H06
3020-00-523-8663INTERCHANGEABLE
GEAR,SPUR
4730-00-821-0251INTERCHANGEABLE
CLAMP,HOSE
7974046
5340-01-101-8262INTERCHANGEABLE
CLAMP,LOOP
COV-1309Z2
5905-01-113-0341INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5340-01-149-5245INTERCHANGEABLE
PAD
56128

Frequently Asked Questions

What is NSN 5120-01-431-1120?

NSN 5120-01-431-1120 is a Key Set,socket Head Screw, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-431-1120?

NSN 5120-01-431-1120 has 4 cross-referenced part numbers: 56128 (Apex Tool Group, Llc Dba Nicholson), 56128 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), 56128 (Easco Hand Tools Inc), B18.3 (The American Society of Mechanical Engineers).

What NSN replaces 5120-01-431-1120?

There are 6 known substitutes for 5120-01-431-1120: 5905-00-407-2567, 3020-00-523-8663, 4730-00-821-0251 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 56128?

Key specifications for 56128: Key Characteristic: CONTAINS HEX KEYS SIZE 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8 AND 1/2 IN. IN; Container Type: CASE; Key Quantity: 13; Handle Type: L-STYLE. 5 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com