PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

J-4242Wrench,box

Bosch Automotive Service Solutions Inc. · NSN 5120-00-591-2685 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-591-2685 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-591-2685. Primary manufacturer part number: J-4242.
Features
  • Wrench,box — FSC 5120
  • Large End Head Thickness: 0.300 INCHES MINIMUM IN
  • Small End Outside Diameter: 0.740 INCHES MINIMUM IN
  • Large End Outside Diameter: 0.740 INCHES MINIMUM IN
  • Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
  • Style Designator: S-SHAPED DOUBLE HEAD
  • Small End Head Thickness: 0.300 INCHES MINIMUM IN
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-00-591-2685, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Bosch Automotive Service Solutions Inc.. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 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
NSN5120-00-591-2685
Primary Part NumberJ-4242
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerBosch Automotive Service Solutions Inc.
StatusCANCELLED
Large End Head Thickness0.300 INCHES MINIMUM IN
Small End Outside Diameter0.740 INCHES MINIMUM IN
Large End Outside Diameter0.740 INCHES MINIMUM IN
Hardness Rating30.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM
Style DesignatorS-SHAPED DOUBLE HEAD
Small End Head Thickness0.300 INCHES MINIMUM IN
MaterialSTEEL OVERALL
Wrenching Surface Shape12 POINT BOTH ENDS INTERNAL
Wrenching Surface Size0.500 INCHES NOMINAL BOTH ENDS IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5305-00-017-9860 INTERCHANGEABLE
Screw,cap,hexagon Head
5365-00-059-503530214-3 INTERCHANGEABLE
Shim
Dana Corp Spicer Transmission Div
5330-00-096-8158800009 INTERCHANGEABLE
Gasket
Garwood/feller Inc Garwood Winch Div
9540-00-146-0726 INTERCHANGEABLE
Angle,structural
1005-00-344-8946S122 INTERCHANGEABLE
Sight Assy
O F Mossberg & Sons Inc
5330-00-364-9728S12604-117 INTERCHANGEABLE
Retainer,packing
Trelleborg Sealing Solutions Us, Inc.
5998-00-455-98556723-00437 INTERCHANGEABLE
Circuit Card Assembly
Bae Systems (operations) Limited
4330-00-922-12684400B1383-4 INTERCHANGEABLE
Filtering Disk,fluid
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5905-00-924-9235800009 INTERCHANGEABLE
Resist0r
North Atlantic Industries, Inc. Dba North Atlantic Industries
6675-01-228-5271 INTERCHANGEABLE
Pad,artwork
Cross-Reference Index
Part NumberManufacturer
80-0009 Bacharach, Inc. (USA)
S122 Stanley Industrial & Automotive Llc (USA)
J4242 Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons (USA)
J-4242 PRIMARY Bosch Automotive Service Solutions Inc. (USA)
J4242 Delphi France SAS (FRA)
Related Parts
5305-00-017-9860INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
5365-00-059-5035INTERCHANGEABLE
SHIM
30214-3
5330-00-096-8158INTERCHANGEABLE
GASKET
800009
9540-00-146-0726INTERCHANGEABLE
ANGLE,STRUCTURAL
1005-00-344-8946INTERCHANGEABLE
SIGHT ASSY
S122
5330-00-364-9728INTERCHANGEABLE
RETAINER,PACKING
S12604-117
5998-00-455-9855INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6723-00437
4330-00-922-1268INTERCHANGEABLE
FILTERING DISK,FLUID
4400B1383-4
5905-00-924-9235INTERCHANGEABLE
RESIST0R
800009
6675-01-228-5271INTERCHANGEABLE
PAD,ARTWORK
5360-01-379-8933INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
S-122
6515-01-531-6489INTERCHANGEABLE
LEG KIT,ALS
80-0009

Frequently Asked Questions

What is NSN 5120-00-591-2685?

NSN 5120-00-591-2685 is a Wrench,box, manufactured by Bosch Automotive Service Solutions Inc., classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-591-2685?

NSN 5120-00-591-2685 has 5 cross-referenced part numbers: 80-0009 (Bacharach, Inc.), S122 (Stanley Industrial & Automotive Llc), J4242 (Spx Corporation Dba O T C Tool & Equip Division Div Spx Corp - Kent-Moore/otc Divisons), J-4242 (Bosch Automotive Service Solutions Inc.), J4242 (Delphi France SAS).

What NSN replaces 5120-00-591-2685?

There are 12 known substitutes for 5120-00-591-2685: 5305-00-017-9860, 5365-00-059-5035, 5330-00-096-8158 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of J-4242?

Key specifications for J-4242: Overall Length: 7.000 INCHES NOMINAL IN; Large End Head Thickness: 0.300 INCHES MINIMUM IN; Small End Outside Diameter: 0.740 INCHES MINIMUM IN; Large End Outside Diameter: 0.740 INCHES MINIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-591-2685 still in active supply?

NSN 5120-00-591-2685 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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