PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26-751Wrench,box

Armstrong Bros Tool Co · NSN 5120-00-204-2670 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-204-2670 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-204-2670. Primary manufacturer part number: 26-751.
Features
  • Wrench,box — FSC 5120
  • Large End Head Thickness: 0.656 INCHES MAXIMUM IN
  • Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL
  • Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS
  • Wrenching Surface Size: 1.000 INCHES NOMINAL SECOND END IN
  • Specification/standard Data: 05047-ASME B107.100 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Style Designator: SHALLOW ANGULAR OFFSET DOUBLE HEAD
  • Wrenching End Offset Angle: 15.0 DEGREES NOMINAL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-00-204-2670, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 10 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
NSN5120-00-204-2670
Primary Part Number26-751
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerArmstrong Bros Tool Co
StatusCANCELLED
Large End Head Thickness0.656 INCHES MAXIMUM IN
Wrenching Surface Shape12 POINT BOTH ENDS INTERNAL
Nondefinitive Spec/std Data1 TYPE AND 1 CLASS
Wrenching Surface Size1.000 INCHES NOMINAL SECOND END IN
Specification/standard Data05047-ASME B107.100 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Style DesignatorSHALLOW ANGULAR OFFSET DOUBLE HEAD
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Surface TreatmentCHROMIUM OVERALL
MaterialSTEEL OVERALL
Wrenching Surface Size0.938 INCHES NOMINAL FIRST END IN
Large End Outside Diameter1.500 INCHES MAXIMUM IN
Small End Head Thickness0.625 INCHES MAXIMUM IN
Small End Outside Diameter1.375 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-106-8117 INTERCHANGEABLE
Nut,hexagon
5120-00-184-8676 INTERCHANGEABLE
Wrench,box
5120-00-184-8677 INTERCHANGEABLE
Wrench,box
5120-00-184-8678 INTERCHANGEABLE
Wrench,box
5120-00-222-1592 INTERCHANGEABLE
Wrench,box
5120-00-222-1593 INTERCHANGEABLE
Wrench,box
5120-00-224-3144 INTERCHANGEABLE
Wrench,box
5120-00-224-3146 INTERCHANGEABLE
Wrench,box
5120-00-224-3148 INTERCHANGEABLE
Wrench,box
5120-00-224-3154 INTERCHANGEABLE
Wrench,box
Cross-Reference Index
Part NumberManufacturer
26-751 Armstrong Bros Tool Co (USA)
A-A-1342 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B107.9 TY1CL1 General Services Administration Federal Supply Service (USA)
26-751 Apex Tool Group, Llc Dba Nicholson (USA)
B107.6 The American Society of Mechanical Engineers (USA)
26-751 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
B107.9 The American Society of Mechanical Engineers (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
P461 Fmc Corp (USA)
B107.100 The American Society of Mechanical Engineers (USA)
0395 7011 Blackwood J. Blackwood & Son Pty Ltd (AUS)
P461 Bae Systems Land & Armaments L.p. (USA)
Related Parts
5310-00-106-8117INTERCHANGEABLE
NUT,HEXAGON
5120-00-184-8676INTERCHANGEABLE
WRENCH,BOX
5120-00-184-8677INTERCHANGEABLE
WRENCH,BOX
5120-00-184-8678INTERCHANGEABLE
WRENCH,BOX
5120-00-222-1592INTERCHANGEABLE
WRENCH,BOX
5120-00-222-1593INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3144INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3146INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3148INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3154INTERCHANGEABLE
WRENCH,BOX
5120-00-228-9521INTERCHANGEABLE
WRENCH,BOX
5120-00-228-9524INTERCHANGEABLE
WRENCH,BOX

Frequently Asked Questions

What is NSN 5120-00-204-2670?

NSN 5120-00-204-2670 is a Wrench,box, manufactured by Armstrong Bros Tool Co, classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-204-2670?

NSN 5120-00-204-2670 has 12 cross-referenced part numbers: 26-751 (Armstrong Bros Tool Co), A-A-1342 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), B107.9 TY1CL1 (General Services Administration Federal Supply Service), 26-751 (Apex Tool Group, Llc Dba Nicholson), B107.6 (The American Society of Mechanical Engineers) and 7 more.

What NSN replaces 5120-00-204-2670?

There are 12 known substitutes for 5120-00-204-2670: 5310-00-106-8117, 5120-00-184-8676, 5120-00-184-8677 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26-751?

Key specifications for 26-751: Large End Head Thickness: 0.656 INCHES MAXIMUM IN; Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL; Nondefinitive Spec/std Data: 1 TYPE AND 1 CLASS; Wrenching Surface Size: 1.000 INCHES NOMINAL SECOND END IN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-204-2670 still in active supply?

NSN 5120-00-204-2670 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.
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