PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28-028Wrench,open End

Apex Tool Group, Llc Dba Nicholson · NSN 5120-00-203-4814 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-203-4814 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-203-4814. Primary manufacturer part number: 28-028.
Features
  • Wrench,open End — FSC 5120
  • Wrenching Surface Size: 0.875 INCHES NOMINAL SINGLE END IN
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM
  • Head Thickness: 0.250 INCHES MAXIMUM IN
  • Surface Treatment: NICKEL AND CHROMIUM OVERALL
  • Style Designator: SINGLE HEAD
  • Material: STEEL OVERALL
  • Torque Capacity: 1000.0 INCH-POUNDS MINIMUM IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-203-4814, 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 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5120-00-203-4814
Primary Part Number28-028
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusCANCELLED
Wrenching Surface Size0.875 INCHES NOMINAL SINGLE END IN
Hardness Rating40.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM
Head Thickness0.250 INCHES MAXIMUM IN
Surface TreatmentNICKEL AND CHROMIUM OVERALL
Style DesignatorSINGLE HEAD
MaterialSTEEL OVERALL
Torque Capacity1000.0 INCH-POUNDS MINIMUM IN
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Head Angle30.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 8
5310-00-254-423328028 INTERCHANGEABLE
Washer
John Deer Consumer Products Inc
5365-00-383-475452774H INTERCHANGEABLE
Shim
Navistar Intl Corp Truck Br Ohio Plant
2805-00-561-8661FRRL16 INTERCHANGEABLE
Lock,valve Spring Retainer
Eaton Corp Dba Eaton Aerospace Jackson
5950-00-603-7153 INTERCHANGEABLE
Coil,radio Frequency
5331-00-982-655332469 INTERCHANGEABLE
O-Ring
Setra Systems, Inc. Dba Gems Sensors
5961-01-086-755428028 INTERCHANGEABLE
Semiconductor Device,diode
Eldec Aerospace Corp
4330-01-650-013390391 INTERCHANGEABLE
Adapter,fluid Filter
Ejay Filtration, Inc. Dba Ejay Filtration
1680-01-654-6016 INTERCHANGEABLE
Filler Neck,aircraft Components
Cross-Reference Index
Part NumberManufacturer
28-028 Apex Tool Group, Llc Dba Nicholson (USA)
1228 Bonney Forge Corp (USA)
GGG-W-636 TY17CL3 General Services Administration Federal Supply Service (USA)
28-028 Satair A/s (DNK)
1228 Utica Tool Co Inc (USA)
A-A-1353 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
28-028 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
1228 Martin Sprocket and Gear Inc (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
28-028 Armstrong Bros Tool Co (USA)
Related Parts
5310-00-254-4233INTERCHANGEABLE
WASHER
28028
5365-00-383-4754INTERCHANGEABLE
SHIM
52774H
2805-00-561-8661INTERCHANGEABLE
LOCK,VALVE SPRING RETAINER
FRRL16
5950-00-603-7153INTERCHANGEABLE
COIL,RADIO FREQUENCY
5331-00-982-6553INTERCHANGEABLE
O-RING
32469
5961-01-086-7554INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
28028
4330-01-650-0133INTERCHANGEABLE
ADAPTER,FLUID FILTER
90391
1680-01-654-6016INTERCHANGEABLE
FILLER NECK,AIRCRAFT COMPONENTS

Frequently Asked Questions

What is NSN 5120-00-203-4814?

NSN 5120-00-203-4814 is a Wrench,open End, manufactured by Apex Tool Group, Llc Dba Nicholson, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-203-4814?

NSN 5120-00-203-4814 has 10 cross-referenced part numbers: 28-028 (Apex Tool Group, Llc Dba Nicholson), 1228 (Bonney Forge Corp), GGG-W-636 TY17CL3 (General Services Administration Federal Supply Service), 28-028 (Satair A/s), 1228 (Utica Tool Co Inc) and 5 more.

What NSN replaces 5120-00-203-4814?

There are 8 known substitutes for 5120-00-203-4814: 5310-00-254-4233, 5365-00-383-4754, 2805-00-561-8661 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28-028?

Key specifications for 28-028: Wrenching Surface Size: 0.875 INCHES NOMINAL SINGLE END IN; Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM; Head Thickness: 0.250 INCHES MAXIMUM IN; Surface Treatment: NICKEL AND CHROMIUM OVERALL. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-203-4814 still in active supply?

NSN 5120-00-203-4814 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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