PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26-109Wrench,open End

Armstrong Bros Tool Co · NSN 5120-01-323-8159 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-323-8159 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-323-8159. Primary manufacturer part number: 26-109.
Features
  • Wrench,open End — FSC 5120
  • Material: STEEL OVERALL
  • Wrenching Surface Size: 0.688 INCHES NOMINAL FIRST END IN
  • Wrenching Surface Size: 0.781 INCHES NOMINAL SECOND END IN
  • Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL
  • Style Designator: DOUBLE HEAD
  • Large End Head Angle: 15.0 DEGREES NOMINAL
  • Small End Head Angle: 15.0 DEGREES NOMINAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,open End, cataloged under National Stock Number 5120-01-323-8159, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Armstrong Bros Tool Co. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-323-8159
Primary Part Number26-109
Item NameWrench,open End
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusACTIVE
MaterialSTEEL OVERALL
Wrenching Surface Size0.688 INCHES NOMINAL FIRST END IN
Wrenching Surface Size0.781 INCHES NOMINAL SECOND END IN
Wrenching Surface ShapeOVAL BOTH ENDS INTERNAL
Style DesignatorDOUBLE HEAD
Large End Head Angle15.0 DEGREES NOMINAL
Small End Head Angle15.0 DEGREES NOMINAL
Small End Head Thickness0.203 INCHES MAXIMUM IN
Large End Head Thickness0.203 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5110-00-186-4211 INTERCHANGEABLE
Reamer,hand
3455-00-194-055058-10071 INTERCHANGEABLE
Cutter,milling,side
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
7510-00-285-178726109 INTERCHANGEABLE
Rubber Band
Alliance Rubber Co
2530-00-707-6672F-106355 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
Federal Mogul Corp Sub Wagner Brake Moog Automotive Div
4730-01-193-200426109 INTERCHANGEABLE
Flange,pipe,blind
Leslie Controls, Inc. Dba Leslie Controls Inc
2990-01-227-252926109 INTERCHANGEABLE
Housing,rotor
Stewart & Stevenson Power Products Llc
5331-01-240-163126109 INTERCHANGEABLE
O-Ring
Eaton Corporation Dba Eaton Inoac Div Eaton
5325-01-718-411926109 INTERCHANGEABLE
Insert,screw Thread
Jergens Inc Div Tooling Components Division
Cross-Reference Index
Part NumberManufacturer
26-109 Armstrong Bros Tool Co (USA)
26-109 Apex Tool Group, Llc Dba Nicholson (USA)
26-109 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
Related Parts
5110-00-186-4211INTERCHANGEABLE
REAMER,HAND
3455-00-194-0550INTERCHANGEABLE
CUTTER,MILLING,SIDE
58-10071
7510-00-285-1787INTERCHANGEABLE
RUBBER BAND
26109
2530-00-707-6672INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
F-106355
4730-01-193-2004INTERCHANGEABLE
FLANGE,PIPE,BLIND
26109
2990-01-227-2529INTERCHANGEABLE
HOUSING,ROTOR
26109
5331-01-240-1631INTERCHANGEABLE
O-RING
26109
5325-01-718-4119INTERCHANGEABLE
INSERT,SCREW THREAD
26109

Frequently Asked Questions

What is NSN 5120-01-323-8159?

NSN 5120-01-323-8159 is a Wrench,open End, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-323-8159?

NSN 5120-01-323-8159 has 3 cross-referenced part numbers: 26-109 (Armstrong Bros Tool Co), 26-109 (Apex Tool Group, Llc Dba Nicholson), 26-109 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.).

What NSN replaces 5120-01-323-8159?

There are 8 known substitutes for 5120-01-323-8159: 5110-00-186-4211, 3455-00-194-0550, 7510-00-285-1787 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26-109?

Key specifications for 26-109: Material: STEEL OVERALL; Wrenching Surface Size: 0.688 INCHES NOMINAL FIRST END IN; Wrenching Surface Size: 0.781 INCHES NOMINAL SECOND END IN; Wrenching Surface Shape: OVAL BOTH ENDS INTERNAL. 10 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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