PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JC904AWrench,open End

The Stanley Works Dba Stanley Proto · NSN 5120-00-277-1185 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-1185 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-1185. Primary manufacturer part number: JC904A.
Features
  • Wrench,open End — FSC 5120
  • Style Designator: STRUCTURAL
  • Surface Treatment: OXIDE OVERALL
  • Wrenching Surface Size: 0.750 INCHES NOMINAL SINGLE END IN
  • Head Thickness: 0.406 INCHES MINIMUM IN
  • Material: STEEL OVERALL
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • 7 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-1185, 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 7 commercial cross-references from 6 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
NSN5120-00-277-1185
Primary Part NumberJC904A
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusCANCELLED
Style DesignatorSTRUCTURAL
Surface TreatmentOXIDE OVERALL
Wrenching Surface Size0.750 INCHES NOMINAL SINGLE END IN
Head Thickness0.406 INCHES MINIMUM IN
MaterialSTEEL OVERALL
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5342-00-040-23648347212 INTERCHANGEABLE
Clip Assembly
U S Army Tank Automotive Command Amsta-Im-Mm
5330-00-154-886919J835PC32 INTERCHANGEABLE
Seal,plain Encased
Westinghouse Electric Corp
5961-00-222-1375 INTERCHANGEABLE
Transistor
5950-00-232-514432524 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
5120-00-240-1588JC908A 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
5120-00-277-1191906B 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
Cross-Reference Index
Part NumberManufacturer
C904A The Stanley Works Dba Stanley Proto (USA)
32-524 Armstrong Bros Tool Co (USA)
32-524 Apex Tool Group, Llc Dba Nicholson (USA)
GGG-W-636 TY9CL1 General Services Administration Federal Supply Service (USA)
32-524 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
JC904A PRIMARY The Stanley Works Dba Stanley Proto (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5342-00-040-2364INTERCHANGEABLE
CLIP ASSEMBLY
8347212
5330-00-154-8869INTERCHANGEABLE
SEAL,PLAIN ENCASED
19J835PC32
5961-00-222-1375INTERCHANGEABLE
TRANSISTOR
5950-00-232-5144INTERCHANGEABLE
TRANSFORMER,POWER
32524
5120-00-240-1588INTERCHANGEABLE
WRENCH,OPEN END
JC908A
5120-00-277-1187INTERCHANGEABLE
WRENCH,OPEN END
JC905A
5120-00-277-1188INTERCHANGEABLE
WRENCH,OPEN END
JC905
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

Frequently Asked Questions

What is NSN 5120-00-277-1185?

NSN 5120-00-277-1185 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 5120-00-277-1185?

NSN 5120-00-277-1185 has 7 cross-referenced part numbers: C904A (The Stanley Works Dba Stanley Proto), 32-524 (Armstrong Bros Tool Co), 32-524 (Apex Tool Group, Llc Dba Nicholson), GGG-W-636 TY9CL1 (General Services Administration Federal Supply Service), 32-524 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.) and 2 more.

What NSN replaces 5120-00-277-1185?

There are 12 known substitutes for 5120-00-277-1185: 5342-00-040-2364, 5330-00-154-8869, 5961-00-222-1375 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of JC904A?

Key specifications for JC904A: Style Designator: STRUCTURAL; Surface Treatment: OXIDE OVERALL; Overall Length: 9.250 INCHES MINIMUM AND 12.500 INCHES MAXIMUM IN; Wrenching Surface Size: 0.750 INCHES NOMINAL SINGLE END IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-277-1185 still in active supply?

NSN 5120-00-277-1185 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.
PartsTable Design LLC · partstable.com