PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JC905Wrench,open End

The Stanley Works Dba Stanley Proto · NSN 5120-00-277-1188 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-1188 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-1188. Primary manufacturer part number: JC905.
Features
  • Wrench,open End — FSC 5120
  • Style Designator: STRUCTURAL
  • Surface Treatment: OXIDE OVERALL
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Wrenching Surface Size: 0.875 INCHES NOMINAL SINGLE END IN
  • Material: STEEL OVERALL
  • Head Thickness: 0.500 INCHES MINIMUM IN
  • 6 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-1188, 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 6 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: Active.

Technical Specifications
ParameterValue
NSN5120-00-277-1188
Primary Part NumberJC905
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Style DesignatorSTRUCTURAL
Surface TreatmentOXIDE OVERALL
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Wrenching Surface Size0.875 INCHES NOMINAL SINGLE END IN
MaterialSTEEL OVERALL
Head Thickness0.500 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
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
5120-00-277-1191906B INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
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
5120-00-277-1198JC910A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
C905 The Stanley Works Dba Stanley Proto (USA)
32-528 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
JC905 PRIMARY The Stanley Works Dba Stanley Proto (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
GGG-W-636 TY9CL1 General Services Administration Federal Supply Service (USA)
32-528 Apex Tool Group, Llc Dba Nicholson (USA)
Related Parts
5120-00-240-1588INTERCHANGEABLE
WRENCH,OPEN END
JC908A
5120-00-277-1185INTERCHANGEABLE
WRENCH,OPEN END
JC904A
5120-00-277-1187INTERCHANGEABLE
WRENCH,OPEN END
JC905A
5120-00-277-1191INTERCHANGEABLE
WRENCH,OPEN END
906B
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
5120-00-277-1201INTERCHANGEABLE
WRENCH,OPEN END
JC912

Frequently Asked Questions

What is NSN 5120-00-277-1188?

NSN 5120-00-277-1188 is a Wrench,open End, manufactured by The Stanley Works Dba Stanley Proto, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-277-1188?

NSN 5120-00-277-1188 has 6 cross-referenced part numbers: C905 (The Stanley Works Dba Stanley Proto), 32-528 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.), JC905 (The Stanley Works Dba Stanley Proto), GGG-W-636 (Federal Specifications Promulgated by General Services Administration Washington DC), GGG-W-636 TY9CL1 (General Services Administration Federal Supply Service) and 1 more.

What NSN replaces 5120-00-277-1188?

There are 12 known substitutes for 5120-00-277-1188: 5120-00-240-1588, 5120-00-277-1185, 5120-00-277-1187 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of JC905?

Key specifications for JC905: Style Designator: STRUCTURAL; Surface Treatment: OXIDE OVERALL; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Wrenching Surface Size: 0.875 INCHES NOMINAL SINGLE END IN. 7 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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