PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81663Wrench,box and Open End,combinat

Apex Tool Group, Llc Dba Nicholson · NSN 5120-01-532-2343 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-532-2343 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-532-2343. Primary manufacturer part number: 81663.
Features
  • Wrench,box and Open End,combinat — FSC 5120
  • Nondefinitive Spec/std Data: 2 TYPE AND 4 CLASS AND C STYLE
  • Features Provided: FULL POLISH
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Size: 0.938 INCHES NOMINAL BOTH ENDS IN
  • Wrenching Surface Shape: OVAL FIRST END INTERNAL
  • Style Designator: OFFSET
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box and Open End,combinat, cataloged under National Stock Number 5120-01-532-2343, 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-532-2343
Primary Part Number81663
Item NameWrench,box and Open End,combinat
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerApex Tool Group, Llc Dba Nicholson
StatusACTIVE
Nondefinitive Spec/std Data2 TYPE AND 4 CLASS AND C STYLE
Features ProvidedFULL POLISH
MaterialSTEEL OVERALL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Size0.938 INCHES NOMINAL BOTH ENDS IN
Wrenching Surface ShapeOVAL FIRST END INTERNAL
Style DesignatorOFFSET
Specification/standard Data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Head Angle15.0 DEGREES NOMINAL
Wrenching Surface Shape12 POINT SECOND END INTERNAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5945-00-023-1773 INTERCHANGEABLE
Contact Set,relay
5910-00-124-0433 INTERCHANGEABLE
Capacitor,fixed,electrolytic
5905-00-180-8622 INTERCHANGEABLE
Resistor,variable,wire Wound,non
5133-00-228-1393 INTERCHANGEABLE
Drill,twist
5330-00-432-296225230 INTERCHANGEABLE
Retainer,packing
Continental Electric Motors, Inc.
3040-00-797-4476252-30 INTERCHANGEABLE
Gearshaft,spur
Dukes Aerospace, Inc.
4320-01-320-296125230 INTERCHANGEABLE
Head,hydraulic Motor-Pump
Liquid Metronics Inc
3120-01-377-891881663 INTERCHANGEABLE
Bearing,sleeve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Cross-Reference Index
Part NumberManufacturer
81663 Apex Tool Group, Llc Dba Nicholson (USA)
AS954 Sae International Dba Sae International (USA)
456720009107 Ncb Hungary (honvedsegi Egyseges Termekkod) (HUN)
25-230 Apex Tool Group, Llc Dba Nicholson (USA)
AS954 TY2CL4STA General Services Administration Federal Supply Service (USA)
25-230 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
AS954 TY2CL4STC General Services Administration Federal Supply Service (USA)
25-230 Armstrong Bros Tool Co (USA)
AS954 Society of Automotive Engineers Inc (USA)
Related Parts
5945-00-023-1773INTERCHANGEABLE
CONTACT SET,RELAY
5910-00-124-0433INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
5905-00-180-8622INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
5133-00-228-1393INTERCHANGEABLE
DRILL,TWIST
5330-00-432-2962INTERCHANGEABLE
RETAINER,PACKING
25230
3040-00-797-4476INTERCHANGEABLE
GEARSHAFT,SPUR
252-30
4320-01-320-2961INTERCHANGEABLE
HEAD,HYDRAULIC MOTOR-PUMP
25230
3120-01-377-8918INTERCHANGEABLE
BEARING,SLEEVE
81663

Frequently Asked Questions

What is NSN 5120-01-532-2343?

NSN 5120-01-532-2343 is a Wrench,box and Open End,combinat, 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 5120-01-532-2343?

NSN 5120-01-532-2343 has 9 cross-referenced part numbers: 81663 (Apex Tool Group, Llc Dba Nicholson), AS954 (Sae International Dba Sae International), 456720009107 (Ncb Hungary (honvedsegi Egyseges Termekkod)), 25-230 (Apex Tool Group, Llc Dba Nicholson), AS954 TY2CL4STA (General Services Administration Federal Supply Service) and 4 more.

What NSN replaces 5120-01-532-2343?

There are 8 known substitutes for 5120-01-532-2343: 5945-00-023-1773, 5910-00-124-0433, 5905-00-180-8622 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81663?

Key specifications for 81663: Overall Length: 13.250 INCHES NOMINAL IN; Nondefinitive Spec/std Data: 2 TYPE AND 4 CLASS AND C STYLE; Features Provided: FULL POLISH; Material: STEEL OVERALL. 12 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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