PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JC909Wrench,open End

The Stanley Works Dba Stanley Proto · NSN 5120-00-277-3373 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-277-3373 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-277-3373. Primary manufacturer part number: JC909.
Features
  • Wrench,open End — FSC 5120
  • Head Thickness: 0.719 INCHES MINIMUM IN
  • Wrenching Surface Shape: OVAL SINGLE END INTERNAL
  • Surface Treatment: OXIDE OVERALL
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 1.438 INCHES NOMINAL SINGLE END IN
  • Style Designator: STRUCTURAL
  • 7 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-00-277-3373, 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: Active.

Technical Specifications
ParameterValue
NSN5120-00-277-3373
Primary Part NumberJC909
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerThe Stanley Works Dba Stanley Proto
StatusACTIVE
Head Thickness0.719 INCHES MINIMUM IN
Wrenching Surface ShapeOVAL SINGLE END INTERNAL
Surface TreatmentOXIDE OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Size1.438 INCHES NOMINAL SINGLE END IN
Style DesignatorSTRUCTURAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3455-00-011-8742 INTERCHANGEABLE
File,rotary
4730-00-061-7306 INTERCHANGEABLE
Cup,grease
5940-00-113-81830097892 INTERCHANGEABLE
Terminal,lug
Denel Vehicle Systems
1730-00-187-0659 INTERCHANGEABLE
Cushion,retainer
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
5120-00-277-1191906B INTERCHANGEABLE
Wrench,open End
Martin Sprocket and Gear Inc
5120-00-277-1192JC907 INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
32-546 Armstrong Bros Tool Co (USA)
C909 The Stanley Works Dba Stanley Proto (USA)
JC909 PRIMARY The Stanley Works Dba Stanley Proto (USA)
32-546 Apex Tool Group, Llc Dba Nicholson (USA)
32-546 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
GGG-W-636 TY9CL1 General Services Administration Federal Supply Service (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
3455-00-011-8742INTERCHANGEABLE
FILE,ROTARY
4730-00-061-7306INTERCHANGEABLE
CUP,GREASE
5940-00-113-8183INTERCHANGEABLE
TERMINAL,LUG
0097892
1730-00-187-0659INTERCHANGEABLE
CUSHION,RETAINER
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
5120-00-277-1191INTERCHANGEABLE
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

Frequently Asked Questions

What is NSN 5120-00-277-3373?

NSN 5120-00-277-3373 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 5120-00-277-3373?

NSN 5120-00-277-3373 has 7 cross-referenced part numbers: 32-546 (Armstrong Bros Tool Co), C909 (The Stanley Works Dba Stanley Proto), JC909 (The Stanley Works Dba Stanley Proto), 32-546 (Apex Tool Group, Llc Dba Nicholson), 32-546 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.) and 2 more.

What NSN replaces 5120-00-277-3373?

There are 12 known substitutes for 5120-00-277-3373: 3455-00-011-8742, 4730-00-061-7306, 5940-00-113-8183 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of JC909?

Key specifications for JC909: Head Thickness: 0.719 INCHES MINIMUM IN; Wrenching Surface Shape: OVAL SINGLE END INTERNAL; Surface Treatment: OXIDE OVERALL; Material: STEEL OVERALL. 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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