PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1726Wrench,open End

Wilde Tool Co., Inc. · NSN 5120-01-139-0320 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-139-0320 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-139-0320. Primary manufacturer part number: 1726.
Features
  • Wrench,open End — FSC 5120
  • Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL
  • Wrenching Surface Size: 9.0 MILLIMETERS NOMINAL FIRST END MM
  • Style Designator: DOUBLE HEAD
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 10.0 MILLIMETERS NOMINAL SECOND END MM
  • 4 verified cross-references
  • Primary manufacturer: Wilde Tool Co., Inc.
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-01-139-0320, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Wilde Tool Co., Inc.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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
NSN5120-01-139-0320
Primary Part Number1726
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerWilde Tool Co., Inc.
StatusACTIVE
Wrenching Surface ShapeOVAL BOTH ENDS INTERNAL
Wrenching Surface Size9.0 MILLIMETERS NOMINAL FIRST END MM
Style DesignatorDOUBLE HEAD
MaterialSTEEL OVERALL
Wrenching Surface Size10.0 MILLIMETERS NOMINAL SECOND END MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5950-00-066-0929 INTERCHANGEABLE
Transformer,radio Frequency
6680-00-243-9977CT1000-2001 INTERCHANGEABLE
Tachometer,mechanical,handheld
Schulze Mfg., Inc.
5120-00-277-1187JC905A INTERCHANGEABLE
Wrench,open End
The Stanley Works Dba Stanley Proto
4910-00-506-0037 INTERCHANGEABLE
Stand,maintenance,automotive Eng
5360-00-657-68861726 INTERCHANGEABLE
Spring,helical,compression
Miller-Holzwarth Inc.
6240-00-926-1213A1726X INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
6250-00-951-4844 INTERCHANGEABLE
Lampholder
4320-01-124-79461726 INTERCHANGEABLE
Pump,hydraulic Ram,hand Driven
Greenlee Textron Inc.
5340-01-269-258628116 INTERCHANGEABLE
Clamp,synchro
Sss Clutch Co, Inc
4820-01-408-70171726 INTERCHANGEABLE
Seat,valve
Droitcour Co
Cross-Reference Index
Part NumberManufacturer
1726 Wilde Tool Co., Inc. (USA)
KD-2366 Cornwell Quality Tools Company, the (USA)
IWM-910 Cornwell Quality Tools Company, the (USA)
ES-606-9X10 Emporium Specialties Co Inc (USA)
Related Parts
5950-00-066-0929INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6680-00-243-9977INTERCHANGEABLE
TACHOMETER,MECHANICAL,HANDHELD
CT1000-2001
5120-00-277-1187INTERCHANGEABLE
WRENCH,OPEN END
JC905A
4910-00-506-0037INTERCHANGEABLE
STAND,MAINTENANCE,AUTOMOTIVE ENG
5360-00-657-6886INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1726
6240-00-926-1213INTERCHANGEABLE
LAMP,INCANDESCENT
A1726X
6250-00-951-4844INTERCHANGEABLE
LAMPHOLDER
4320-01-124-7946INTERCHANGEABLE
PUMP,HYDRAULIC RAM,HAND DRIVEN
1726
5340-01-269-2586INTERCHANGEABLE
CLAMP,SYNCHRO
28116
4820-01-408-7017INTERCHANGEABLE
SEAT,VALVE
1726
4010-01-531-5099INTERCHANGEABLE
CHAIN,WELDED
1726
6515-01-565-5328INTERCHANGEABLE
HOSE,HIGH PRESSURE OXYGEN,VENTIL
10699

Frequently Asked Questions

What is NSN 5120-01-139-0320?

NSN 5120-01-139-0320 is a Wrench,open End, manufactured by Wilde Tool Co., Inc., classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-139-0320?

NSN 5120-01-139-0320 has 4 cross-referenced part numbers: 1726 (Wilde Tool Co., Inc.), KD-2366 (Cornwell Quality Tools Company, the), IWM-910 (Cornwell Quality Tools Company, the), ES-606-9X10 (Emporium Specialties Co Inc).

What NSN replaces 5120-01-139-0320?

There are 12 known substitutes for 5120-01-139-0320: 5950-00-066-0929, 6680-00-243-9977, 5120-00-277-1187 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1726?

Key specifications for 1726: Overall Length: 3.625 INCHES NOMINAL IN; Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL; Wrenching Surface Size: 9.0 MILLIMETERS NOMINAL FIRST END MM; Style Designator: DOUBLE HEAD. 6 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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