This is a kind of Flat Washers. It is a specification for flat washers used in aerospace applications. The specification outlines the requirements for the physical characteristics, materials, dimensions, and performance of these washers. Specifically, NAS1149 washers are designed to provide a load distribution surface between the head of a fastener and the material being fastened, such as a structural panel or other component.
Function: Washers Aircraft ( NAS-1149 Series, Replaces AN960 Series )
Manufacturer: Genuine Aircraft Hardware
In addition to the NAS1149 specification, there are other specifications and standards that govern the use of washers in aerospace applications, such as MIL-STD-3003 and NAS3350. These standards ensure that the washers used in aerospace applications meet the highest quality and performance standards to ensure the safety and reliability of the aircraft or spacecraft.
1. Remove all burrs and sharp edges.
2. Dimensions in inches and apply after finish unless otherwise specified.
3. Surface roughness shall be 125 microinches Ra per asme B46.1
The Am28F020A is a 2 Megabit Flash memory organized as 256 Kbytes of 8 bits each. AMD’s Flash memories offer the most cost-effective and reliable read/write non-volatile random access memory. The Am28F020A is packaged in 32-pin PDIP, PLCC, and TSOP versions. It is designed to be reprogrammed and erased in-system or in standard EPROM programmers. The Am28F020A is erased when shipped from the factory. The standard Am28F020A offers access times of as fast as 70 ns, allowing high speed microprocessors to operate without wait states. To eliminate bus conten tion, the device has separate chip enable (CE#) and output enable (OE#) controls.
1. High performance
(1) Access times as fast as 70 ns
2. CMOS low power consumption
(1) 30 mA maximum active current
(2) 100 μA maximum standby current
(3) No data retention power consumption
3. Latch-up protected to 100 mA from
(1) 1 V to VCC +1 V
4. Embedded Erase Electrical Bulk Chip Erase
(1) Five seconds typical chip erase, including pre-programming
5. Embedded Program
(1) 14 μs typical byte program, including time-out
(2) 4 seconds typical chip program
6. Command register architecture for microprocessor/microcontroller compatible write interface
Other data sheets are available within the file: AM28F020, AM28F020A-120EC, AM28F020A-120ECB,