PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JC906BWrench,open End

The Stanley Works Dba Stanley Proto · NSN 5120-00-277-1191 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-1191 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-1191. Primary manufacturer part number: JC906B.
Features
  • Wrench,open End — FSC 5120
  • Surface Treatment: OXIDE OVERALL
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Head Thickness: 0.531 INCHES MINIMUM IN
  • Style Designator: STRUCTURAL
  • Wrenching Surface Size: 1.000 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • 11 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-1191, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is The Stanley Works Dba Stanley Proto. Government technical data includes 6 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
NSN5120-00-277-1191
Primary Part NumberJC906B
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Surface TreatmentOXIDE OVERALL
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Head Thickness0.531 INCHES MINIMUM IN
Style DesignatorSTRUCTURAL
Wrenching Surface Size1.000 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5120-00-227-8103 INTERCHANGEABLE
Adapter,socket Wrench
5120-00-240-1588JC908A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1185JC904A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1187JC905A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1188JC905 INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1192JC907 INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1194907A INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
5120-00-277-1195JC908 INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1196JC909A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
5120-00-277-1197JC910 INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
32-532 Apex Tool Group, Llc Dba Nicholson (USA)
32-532 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
C906B The Stanley Works Dba Stanley Proto (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
JC906B PRIMARY The Stanley Works Dba Stanley Proto (USA)
32-532 Armstrong Bros Tool Co (USA)
1732 Wright Tool Company, Llc (USA)
906B PRIMARY Martin Sprocket and Gear Inc (USA)
1906B Williams J H Industrial Products Inc (USA)
GGG-W-636 TY9CL1 General Services Administration Federal Supply Service (USA)
1906B Giga, Inc. (USA)
Related Parts
5120-00-227-8103INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5120-00-240-1588INTERCHANGEABLE
WRENCH,OPEN END
JC908A
5120-00-277-1185INTERCHANGEABLE
WRENCH,OPEN END
JC904A
5120-00-277-1187INTERCHANGEABLE
WRENCH,OPEN END
JC905A
5120-00-277-1188INTERCHANGEABLE
WRENCH,OPEN END
JC905
5120-00-277-1192INTERCHANGEABLE
WRENCH,OPEN END
JC907
5120-00-277-1194INTERCHANGEABLE
WRENCH,OPEN END
907A
5120-00-277-1195INTERCHANGEABLE
WRENCH,OPEN END
JC908
5120-00-277-1196INTERCHANGEABLE
WRENCH,OPEN END
JC909A
5120-00-277-1197INTERCHANGEABLE
WRENCH,OPEN END
JC910
5120-00-277-1198INTERCHANGEABLE
WRENCH,OPEN END
JC910A
5120-00-277-1200INTERCHANGEABLE
WRENCH,OPEN END
911A

Frequently Asked Questions

What is NSN 5120-00-277-1191?

NSN 5120-00-277-1191 is a Wrench,open End, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-277-1191?

NSN 5120-00-277-1191 has 11 cross-referenced part numbers: 32-532 (Apex Tool Group, Llc Dba Nicholson), 32-532 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), C906B (The Stanley Works Dba Stanley Proto), GGG-W-636 (Federal Specifications Promulgated by General Services Administration Washington DC), JC906B (The Stanley Works Dba Stanley Proto) and 6 more.

What NSN replaces 5120-00-277-1191?

There are 12 known substitutes for 5120-00-277-1191: 5120-00-227-8103, 5120-00-240-1588, 5120-00-277-1185 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of JC906B?

Key specifications for JC906B: Surface Treatment: OXIDE OVERALL; Overall Length: 11.000 INCHES MINIMUM AND 14.750 INCHES MAXIMUM IN; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Head Thickness: 0.531 INCHES MINIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-277-1191 still in active supply?

NSN 5120-00-277-1191 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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