PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS16373-5Wrench,box

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5120-00-222-1594 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-00-222-1594 — this item is cataloged by the U.S. Government under National Stock Number 5120-00-222-1594. Primary manufacturer part number: MS16373-5.
Features
  • Wrench,box — FSC 5120
  • Special Markings: WRENCH SIZE
  • Wrenching Surface Size: 1.625 INCHES NOMINAL SINGLE END IN
  • Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL
  • Style Designator: SLUGGING
  • Head Thickness: 1.250 INCHES MAXIMUM IN
  • Environmental Attribute Code: PLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Wrench,box, cataloged under National Stock Number 5120-00-222-1594, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 8 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-00-222-1594
Primary Part NumberMS16373-5
Item NameWrench,box
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Special MarkingsWRENCH SIZE
Wrenching Surface Size1.625 INCHES NOMINAL SINGLE END IN
Wrenching Surface Shape12 POINT SINGLE END INTERNAL
Style DesignatorSLUGGING
Head Thickness1.250 INCHES MAXIMUM IN
Environmental Attribute CodePLASTICS REMOVAL IN THE MARINE ENVIRONMENT (PRIME) PRODUCT
MaterialSTEEL OVERALL
Outside Diameter2.438 INCHES MINIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-174-1831 INTERCHANGEABLE
Wrench,box
5120-00-174-1832 INTERCHANGEABLE
Wrench,box
5120-00-174-1833 INTERCHANGEABLE
Wrench,box
5120-00-174-1834 INTERCHANGEABLE
Wrench,box
5120-00-174-1842 INTERCHANGEABLE
Wrench,box
5120-00-222-1595 INTERCHANGEABLE
Wrench,box
5120-00-222-1600 INTERCHANGEABLE
Wrench,box
5120-00-222-1601 INTERCHANGEABLE
Wrench,box
5120-00-224-3109 INTERCHANGEABLE
Wrench,box
5120-00-224-31101870 INTERCHANGEABLE
Wrench,box
Wright Tool Co
Cross-Reference Index
Part NumberManufacturer
MS16373-5 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
A-A-1349 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
GGG-W-636 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5120-00-174-1831INTERCHANGEABLE
WRENCH,BOX
5120-00-174-1832INTERCHANGEABLE
WRENCH,BOX
5120-00-174-1833INTERCHANGEABLE
WRENCH,BOX
5120-00-174-1834INTERCHANGEABLE
WRENCH,BOX
5120-00-174-1842INTERCHANGEABLE
WRENCH,BOX
5120-00-222-1595INTERCHANGEABLE
WRENCH,BOX
5120-00-222-1600INTERCHANGEABLE
WRENCH,BOX
5120-00-222-1601INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3109INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3110INTERCHANGEABLE
WRENCH,BOX
1870
5120-00-224-3111INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3112INTERCHANGEABLE
WRENCH,BOX
5120-00-224-3112

Frequently Asked Questions

What is NSN 5120-00-222-1594?

NSN 5120-00-222-1594 is a Wrench,box, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-00-222-1594?

NSN 5120-00-222-1594 has 3 cross-referenced part numbers: MS16373-5 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), A-A-1349 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), GGG-W-636 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5120-00-222-1594?

There are 12 known substitutes for 5120-00-222-1594: 5120-00-174-1831, 5120-00-174-1832, 5120-00-174-1833 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS16373-5?

Key specifications for MS16373-5: Special Markings: WRENCH SIZE; Wrenching Surface Size: 1.625 INCHES NOMINAL SINGLE END IN; Wrenching Surface Shape: 12 POINT SINGLE END INTERNAL; Style Designator: SLUGGING. 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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