PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7731AWrench,box

Kell-Strom Tool International, Inc. · NSN 5120-00-222-1592 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-222-1592 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-222-1592. Primary manufacturer part number: 7731A.
Features
  • Wrench,box — FSC 5120
  • Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL
  • Nondefinitive Spec/std Data: 2 TYPE AND 1 CLASS AND A STYLE
  • Surface Treatment: CHROMIUM OVERALL
  • Special Markings: WRENCH SIZE
  • Specification/standard Data: 81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
  • Wrenching Surface Size: 0.875 INCHES NOMINAL SECOND END IN
  • Wrenching Surface Size: 0.750 INCHES NOMINAL FIRST END IN
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-00-222-1592, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Kell-Strom Tool International, Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 14 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
NSN5120-00-222-1592
Primary Part Number7731A
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerKell-Strom Tool International, Inc.
StatusCANCELLED
Wrenching Surface Shape12 POINT BOTH ENDS INTERNAL
Nondefinitive Spec/std Data2 TYPE AND 1 CLASS AND A STYLE
Surface TreatmentCHROMIUM OVERALL
Special MarkingsWRENCH SIZE
Specification/standard Data81343-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Wrenching Surface Size0.875 INCHES NOMINAL SECOND END IN
Wrenching Surface Size0.750 INCHES NOMINAL FIRST END IN
Wrenching End Offset Angle15.0 DEGREES NOMINAL
Style DesignatorSHALLOW ANGULAR OFFSET DOUBLE HEAD
Large End Head Thickness0.594 INCHES MAXIMUM IN
MaterialSTEEL OVERALL
Small End Outside Diameter1.156 INCHES MAXIMUM IN
Large End Outside Diameter1.312 INCHES MAXIMUM IN
Small End Head Thickness0.531 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5306-00-151-1128 INTERCHANGEABLE
Bolt,machine
5120-00-184-8676 INTERCHANGEABLE
Wrench,box
5120-00-184-8677 INTERCHANGEABLE
Wrench,box
5120-00-184-8678 INTERCHANGEABLE
Wrench,box
5120-00-204-2670 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
7731A Kell-Strom Tool International, Inc. (USA)
P460 Bae Systems Land & Armaments L.p. (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
AS954 Sae International Dba Sae International (USA)
26-724 Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. (USA)
A-A-1342 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
B107.6 The American Society of Mechanical Engineers (USA)
26-724 Apex Tool Group, Llc Dba Nicholson (USA)
26-724 Armstrong Bros Tool Co (USA)
B107.100 The American Society of Mechanical Engineers (USA)
B107.9 TY1CL1 General Services Administration Federal Supply Service (USA)
AS954 Society of Automotive Engineers Inc (USA)
41W619-646 General Stores Supply Office (USA)
P460 Fmc Corp (USA)
2893B Bonney Forge Corp (USA)
AS954 TY2CL1STA General Services Administration Federal Supply Service (USA)
B107.9 The American Society of Mechanical Engineers (USA)
Related Parts
5306-00-151-1128INTERCHANGEABLE
BOLT,MACHINE
5120-00-184-8676INTERCHANGEABLE
WRENCH,BOX
5120-00-184-8677INTERCHANGEABLE
WRENCH,BOX
5120-00-184-8678INTERCHANGEABLE
WRENCH,BOX
5120-00-204-2670INTERCHANGEABLE
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 5120-00-222-1592?

NSN 5120-00-222-1592 is a Wrench,box, manufactured by Kell-Strom Tool International, Inc., classified under FSC 5120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5120-00-222-1592?

NSN 5120-00-222-1592 has 17 cross-referenced part numbers: 7731A (Kell-Strom Tool International, Inc.), P460 (Bae Systems Land & Armaments L.p.), GGG-W-636 (Federal Specifications Promulgated by General Services Administration Washington DC), AS954 (Sae International Dba Sae International), 26-724 (Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc.) and 12 more.

What NSN replaces 5120-00-222-1592?

There are 12 known substitutes for 5120-00-222-1592: 5306-00-151-1128, 5120-00-184-8676, 5120-00-184-8677 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7731A?

Key specifications for 7731A: Wrenching Surface Shape: 12 POINT BOTH ENDS INTERNAL; Nondefinitive Spec/std Data: 2 TYPE AND 1 CLASS AND A STYLE; Surface Treatment: CHROMIUM OVERALL; Special Markings: WRENCH SIZE. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5120-00-222-1592 still in active supply?

NSN 5120-00-222-1592 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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