The Clock,marine,mechanical, cataloged under National Stock Number 6645-00-936-8120, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is The Chelsea Clock Llc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 6645-00-936-8120 |
| Primary Part Number | 20530 |
| Item Name | Clock,marine,mechanical |
| FSC / FSG | 6645 / 66 — No Item Name Available |
| Manufacturer | The Chelsea Clock Llc |
| Status | CANCELLED |
| Jewel Quantity | 11 |
| Nonmagnetic Characteristic | NOT INCLUDED |
| Civil Date Indicator | NOT INCLUDED |
| Second Hand Type | SWEEP |
| Luminous Dial | INCLUDED |
| Plastic Case Color | BLACK |
| Material | PLASTIC CASE |
| Special Markings | U. S. ARMY CLOCK,MESSAGE CENTER,M2 |
| Winding Device Location | FACE |
| Maximum Running Time | 8.0 DAYS |
| Bezel Type | HINGED |
| Color | BLACK BACKGROUND |
| Dial Outside Diameter | 6.000 INCHES IN |
| Scale Range | +0.0 TO 12.0 HOUR |
| Second Hand Color | SILVER |
| Striking Mechanism | NOT INCLUDED |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 6645-00-936-8120 is a Clock,marine,mechanical, manufactured by The Chelsea Clock Llc, classified under FSC 6645 (No Item Name Available). Status: cancelled.
NSN 6645-00-936-8120 has 3 cross-referenced part numbers: 20530 (The Chelsea Clock Llc), MILC3956 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M2 (The Chelsea Clock Llc).
There are 10 known substitutes for 6645-00-936-8120: 3040-00-089-9851, 4720-00-239-5041, 5930-00-296-7269 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20530: Jewel Quantity: 11; Nonmagnetic Characteristic: NOT INCLUDED; Civil Date Indicator: NOT INCLUDED; Second Hand Type: SWEEP. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 6645-00-936-8120 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.