NSN 5120-01-657-0341 · NIIN 016570341 · Part number J3540
The Stanley Works Dba Stanley Proto · FSC 5120 — Hand Tools, Nonedged, Nonpowered · FSG 51 — Hand Tools · CAGE 1CV05
Government record, cited
NSN 5120-01-657-0341 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-657-0341. Manufacturer of record part number: J3540.
Also searched as5120-01-657-0341 ·
5120016570341 ·
NIIN 016570341 ·
01-657-0341 ·
FSC 5120 Hand Tools, Nonedged, Nonpowered · CAGE 1CV05 · J3540
Wrenching Surface Size: 1.250 INCHES NOMINAL SINGLE END IN
Style Designator: SINGLE HEAD
Wrenching Surface Shape: OVAL SINGLE END INTERNAL
Surface Treatment: CHROMIUM OVERALL
Head Angle: 30.0 DEGREES NOMINAL
Material: STEEL OVERALL
Head Thickness: 0.250 INCHES NOMINAL IN
Identification
NSN: 5120-01-657-0341
NIIN: 016570341
FSC: 5120 — Hand Tools, Nonedged, Nonpowered
FSG: 51 — Hand Tools
Primary part number: J3540
Manufacturer: The Stanley Works Dba Stanley Proto
General Description
The Wrench,open End, cataloged under National Stock Number 5120-01-657-0341, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Henchman Group Pty Ltd the Trustee for Henchman Unit Trust (AUS)
Reference documents
Reference
Meaning
J3540
5/9Secondary reference
Henchman Products Pty Ltd
No interchangeability data on file.
Other items in FSC 5120 — Hand Tools, Nonedged, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5120-00-001-2642
ADAPTER,TORQUE WRENCH
5120-00-001-2644
ADAPTER,TORQUE WRENCH
5120-00-001-2650
INSERTER,SEAL
5120-00-001-2651
5120-00-001-2651 · Item name not on file
5120-00-001-2652
INSTALLING TOOL,SHAFT
5120-00-001-2653
REMOVER,PREFORMED PACKING
5120-00-001-2654
REMOVER,PREFORMED PACKING
5120-00-001-2655
SOCKET,WRENCH,FACE SPANNER
Frequently Asked Questions
What is NSN 5120-01-657-0341?
NSN 5120-01-657-0341 is a Wrench,open End, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
What part numbers are listed for NSN 5120-01-657-0341?
NSN 5120-01-657-0341 has 2 manufacturer part numbers on file: J3540 (The Stanley Works Dba Stanley Proto), J3540 (Henchman Group Pty Ltd the Trustee for Henchman Unit Trust).
What are the specifications of J3540?
Key specifications for J3540: Wrenching Surface Size: 1.250 INCHES NOMINAL SINGLE END IN; Style Designator: SINGLE HEAD; Overall Length: 7.000 INCHES NOMINAL IN; Wrenching Surface Shape: OVAL SINGLE END INTERNAL. 7 specifications are documented in the U.S. Government catalog.
Is NSN 5120-01-657-0341 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.