PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M46374-2-B-BWatch,wrist

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6645-01-304-4308 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-304-4308 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-304-4308. Primary manufacturer part number: M46374-2-B-B.
Features
  • Watch,wrist — FSC 6645
  • Color: BLACK, FED STD 595, 37038 BACKGROUND
  • Dial Outside Diameter: 1.120 INCHES IN
  • 5 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Watch,wrist, cataloged under National Stock Number 6645-01-304-4308, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-01-304-4308
Primary Part NumberM46374-2-B-B
Item NameWatch,wrist
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
ColorBLACK, FED STD 595, 37038 BACKGROUND
Dial Outside Diameter1.120 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
6645-00-066-42796645000664279 INTERCHANGEABLE
Watch,wrist
General Services Administration Federal Supply Service
2810-00-118-283939988 INTERCHANGEABLE
Deflector Assy
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6645-01-318-9834 INTERCHANGEABLE
Watch,wrist
6645-01-364-4042 INTERCHANGEABLE
Watch,wrist
5305-01-642-452939988 INTERCHANGEABLE
Screw,cap,socket Head
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
M46374-2-B-B Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-46374G-B 4II Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-W-46374 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-46374 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
39988 Hamilton Watch Co Inc (USA)
Related Parts
6645-00-066-4279INTERCHANGEABLE
WATCH,WRIST
6645000664279
2810-00-118-2839INTERCHANGEABLE
DEFLECTOR ASSY
39988
6645-01-318-9834INTERCHANGEABLE
WATCH,WRIST
6645-01-364-4042INTERCHANGEABLE
WATCH,WRIST
5305-01-642-4529INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
39988

Frequently Asked Questions

What is NSN 6645-01-304-4308?

NSN 6645-01-304-4308 is a Watch,wrist, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-01-304-4308?

NSN 6645-01-304-4308 has 5 cross-referenced part numbers: M46374-2-B-B (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-46374G-B 4II (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-W-46374 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-46374 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 39988 (Hamilton Watch Co Inc).

What NSN replaces 6645-01-304-4308?

There are 5 known substitutes for 6645-01-304-4308: 6645-00-066-4279, 2810-00-118-2839, 6645-01-318-9834 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M46374-2-B-B?

Key specifications for M46374-2-B-B: Color: BLACK, FED STD 595, 37038 BACKGROUND; Dial Outside Diameter: 1.120 INCHES IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-01-304-4308 still in active supply?

NSN 6645-01-304-4308 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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