PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28-040Wrench,open End

Apex Tool Group, Llc Dba Nicholson · NSN 5120-00-203-4808 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-203-4808 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-203-4808. Primary manufacturer part number: 28-040.
Features
  • Wrench,open End — FSC 5120
  • Wrenching Surface Size: 1.250 INCHES NOMINAL SINGLE END IN
  • Torque Capacity: 1000.0 INCH-POUNDS MINIMUM IN
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
  • Surface Treatment: NICKEL AND CHROMIUM OVERALL
  • Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM
  • Style Designator: SINGLE HEAD
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-203-4808, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 10 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
NSN5120-00-203-4808
Primary Part Number28-040
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusCANCELLED
Wrenching Surface Size1.250 INCHES NOMINAL SINGLE END IN
Torque Capacity1000.0 INCH-POUNDS MINIMUM IN
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
Surface TreatmentNICKEL AND CHROMIUM OVERALL
Hardness Rating40.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM
Style DesignatorSINGLE HEAD
Head Thickness0.250 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Head Angle30.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3030-00-005-767322544 INTERCHANGEABLE
Belt,v
Contitech Usa, Inc Dba Veyance Technologies
4810-00-068-6712 INTERCHANGEABLE
Valve,solenoid
4810-00-081-567026330053 INTERCHANGEABLE
Valve,solenoid
Rtx Corporation Div Pratt & Whitney
5330-00-154-495222558 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4730-00-241-7651225-40 INTERCHANGEABLE
Clamp,hose
Acd Tridon Inc
4810-00-884-843128040 INTERCHANGEABLE
Valve,solenoid
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5895-00-887-8445 INTERCHANGEABLE
Preselector Subassy
6850-01-005-48571175 INTERCHANGEABLE
Antifogging Compound
Silar Laboratories Inc
5950-01-023-2587 INTERCHANGEABLE
Coil,radio Frequency
9905-01-059-3724 INTERCHANGEABLE
Plate,instruction
Cross-Reference Index
Part NumberManufacturer
28-040 Apex Tool Group, Llc Dba Nicholson (USA)
1240 Utica Tool Co Inc (USA)
28-040 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
SW90-300 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
GGG-W-636 TY17CL3 General Services Administration Federal Supply Service (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1240 Martin Sprocket and Gear Inc (USA)
22540 Utica Tool Co Inc (USA)
A-A-1353 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
1240 Bonney Forge Corp (USA)
28-040 Armstrong Bros Tool Co (USA)
Related Parts
3030-00-005-7673INTERCHANGEABLE
BELT,V
22544
4810-00-068-6712INTERCHANGEABLE
VALVE,SOLENOID
4810-00-081-5670INTERCHANGEABLE
VALVE,SOLENOID
26330053
5330-00-154-4952INTERCHANGEABLE
SEAL,PLAIN ENCASED
22558
4730-00-241-7651INTERCHANGEABLE
CLAMP,HOSE
225-40
4810-00-884-8431INTERCHANGEABLE
VALVE,SOLENOID
28040
5895-00-887-8445INTERCHANGEABLE
PRESELECTOR SUBASSY
6850-01-005-4857INTERCHANGEABLE
ANTIFOGGING COMPOUND
1175
5950-01-023-2587INTERCHANGEABLE
COIL,RADIO FREQUENCY
9905-01-059-3724INTERCHANGEABLE
PLATE,INSTRUCTION
5930-01-122-4046INTERCHANGEABLE
SWITCH,ROTARY
6091115-1
8115-01-338-8334INTERCHANGEABLE
BOX,SMALL PARTS
28040

Frequently Asked Questions

What is NSN 5120-00-203-4808?

NSN 5120-00-203-4808 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 5120-00-203-4808?

NSN 5120-00-203-4808 has 11 cross-referenced part numbers: 28-040 (Apex Tool Group, Llc Dba Nicholson), 1240 (Utica Tool Co Inc), 28-040 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), SW90-300 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), GGG-W-636 TY17CL3 (General Services Administration Federal Supply Service) and 6 more.

What NSN replaces 5120-00-203-4808?

There are 12 known substitutes for 5120-00-203-4808: 3030-00-005-7673, 4810-00-068-6712, 4810-00-081-5670 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 28-040?

Key specifications for 28-040: Wrenching Surface Size: 1.250 INCHES NOMINAL SINGLE END IN; Torque Capacity: 1000.0 INCH-POUNDS MINIMUM IN; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-203-4808 still in active supply?

NSN 5120-00-203-4808 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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