Mounting Configuration: SPLIT FLANGE WITH 2 MOUNTING HOLES .130 INCH DIAMETER IN
Material: ALUMINUM
Identification
NSN: 6645-00-239-5743
NIIN: 002395743
FSC: 6645 — Time Measuring Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Housing,timer, cataloged under National Stock Number 6645-00-239-5743, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6645-00-239-5743
Item Name
Housing,timer
FSC / FSG
6645 / 66 — Time Measuring Instruments
Status
ACTIVE
Overall Diameter
0.726 INCHES NOMINAL IN
Dial Window
NOT INCLUDED
Surface Treatment
ZINC
Mounting Configuration
SPLIT FLANGE WITH 2 MOUNTING HOLES .130 INCH DIAMETER IN
Material
ALUMINUM
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
10138033
6/9Informative reference only
Nimikkeistokeskus Ncb Finland
MS3345-1
2/2Government specification standardization
U.S. Government activity
No interchangeability data on file.
Other items in FSC 6645 — Time Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6645-00-001-1256
6645-00-001-1256 · Item name not on file
6645-00-001-4498
6645-00-001-4498 · Item name not on file
6645-00-001-4584
6645-00-001-4584 · Item name not on file
6645-00-001-9400
METER,TIME TOTALIZING
6645-00-003-0327
6645-00-003-0327 · Item name not on file
6645-00-003-0328
6645-00-003-0328 · Item name not on file
6645-00-003-0337
6645-00-003-0337 · Item name not on file
6645-00-003-0338
METER,TIME TOTALIZING
Frequently Asked Questions
What is NSN 6645-00-239-5743?
NSN 6645-00-239-5743 is a Housing,timer, classified under FSC 6645, Time Measuring Instruments. Status: active.
What are the specifications of 6645-00-239-5743?
Key specifications for 6645-00-239-5743: Overall Height: 0.295 INCHES NOMINAL IN; Overall Diameter: 0.726 INCHES NOMINAL IN; Dial Window: NOT INCLUDED; Overall Length: 1.260 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 6645-00-239-5743 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.