PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52-004Wrench,box and Open End,combinat

Armstrong Bros Tool Co · NSN 5120-01-504-9656 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-504-9656 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-504-9656. Primary manufacturer part number: 52-004.
Features
  • Wrench,box and Open End,combinat — FSC 5120
  • Wrenching Surface Size: 4.0 MILLIMETERS NOMINAL BOTH ENDS MM
  • Material: STEEL OVERALL
  • Surface Treatment: CHROMIUM OVERALL
  • Wrenching Surface Shape: 6 POINT SECOND END INTERNAL
  • Style Designator: OFFSET
  • Wrenching Surface Shape: OVAL FIRST END INTERNAL
  • Wrenching End Offset Angle: 15.0 DEGREES NOMINAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box and Open End,combinat, cataloged under National Stock Number 5120-01-504-9656, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Bros Tool Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-504-9656
Primary Part Number52-004
Item NameWrench,box and Open End,combinat
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
Wrenching Surface Size4.0 MILLIMETERS NOMINAL BOTH ENDS MM
MaterialSTEEL OVERALL
Surface TreatmentCHROMIUM OVERALL
Wrenching Surface Shape6 POINT SECOND END INTERNAL
Style DesignatorOFFSET
Wrenching Surface ShapeOVAL FIRST END INTERNAL
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Head Angle15.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3455-00-231-347510040 INTERCHANGEABLE
Cutter,milling,plain
Niagara Cutter Inc
5935-00-259-53142Z7412-12 INTERCHANGEABLE
Connector,receptacle,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5305-00-432-353752004 INTERCHANGEABLE
Thumbscrew
Integral Aerospace, Llc Dba Pcx Aerosystems - Santa Ana Div Integral Aerospace, Llc Dba Pcx Aerosystems - Santa Ana
5342-00-554-0583 INTERCHANGEABLE
Cap,filler Opening
5950-00-838-290052004 INTERCHANGEABLE
Reactor
Magnetika Inc Div Magnetika/phillipsburg Location
5962-01-234-3021 INTERCHANGEABLE
Microcircuit,digital
5940-01-425-197952004 INTERCHANGEABLE
Splice,conductor
Te Connectivity Corporation
4730-01-429-135452004 INTERCHANGEABLE
Plug,tube Repair
Shaw Development, Llc
7490-01-477-77895221401 INTERCHANGEABLE
Machine,laminator
Fellowes Inc
7350-01-541-770952004 INTERCHANGEABLE
Bottle,water
Camelbak Products, Llc Dba Camelbak
Cross-Reference Index
Part NumberManufacturer
52-004 Armstrong Bros Tool Co (USA)
52-004 Apex Tool Group, Llc Dba Nicholson (USA)
52-004 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
3455-00-231-3475INTERCHANGEABLE
CUTTER,MILLING,PLAIN
10040
5935-00-259-5314INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2Z7412-12
5305-00-432-3537INTERCHANGEABLE
THUMBSCREW
52004
5342-00-554-0583INTERCHANGEABLE
CAP,FILLER OPENING
5950-00-838-2900INTERCHANGEABLE
REACTOR
52004
5962-01-234-3021INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5940-01-425-1979INTERCHANGEABLE
SPLICE,CONDUCTOR
52004
4730-01-429-1354INTERCHANGEABLE
PLUG,TUBE REPAIR
52004
7490-01-477-7789INTERCHANGEABLE
MACHINE,LAMINATOR
5221401
7350-01-541-7709INTERCHANGEABLE
BOTTLE,WATER
52004
4420-01-632-1341INTERCHANGEABLE
COOLER,FLUID,INDUSTRIAL
52004

Frequently Asked Questions

What is NSN 5120-01-504-9656?

NSN 5120-01-504-9656 is a Wrench,box and Open End,combinat, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-504-9656?

NSN 5120-01-504-9656 has 3 cross-referenced part numbers: 52-004 (Armstrong Bros Tool Co), 52-004 (Apex Tool Group, Llc Dba Nicholson), 52-004 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-504-9656?

There are 11 known substitutes for 5120-01-504-9656: 3455-00-231-3475, 5935-00-259-5314, 5305-00-432-3537 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52-004?

Key specifications for 52-004: Overall Length: 76.2 MILLIMETERS NOMINAL MM; Wrenching Surface Size: 4.0 MILLIMETERS NOMINAL BOTH ENDS MM; Material: STEEL OVERALL; Surface Treatment: CHROMIUM OVERALL. 9 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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