The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-684-1688, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ametek, Inc. Div Aerospace & Defense. Government technical data includes 29 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-684-1688 |
| Primary Part Number | 644 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — No Item Name Available |
| Manufacturer | Ametek, Inc. Div Aerospace & Defense |
| Status | ACTIVE |
| Material | STEEL CASE |
| Color | BLACK CASE |
| Unable to Decode | UNABLE TO DECODE |
| Bezel Type | SNAP-ON |
| Graduation Unit | 1000.0 POUNDS LBS |
| Actuation Type | SINGLE BOURDON TUBE |
| Scale Smallest Increment | 500.0 POUNDS LBS |
| Scale Type | SINGLE |
| Adjustability | NONADJUSTABLE |
| Dial Size | 2-1/2 IN. DIA IN |
| Connection Size | 1/8 IN. NPT IN |
| Mounting Method | FLUSH PANEL AND STUD(S) AND BRACKET(S) |
| Connection Quantity | 1 |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND,RED SHADED AND MARKED DANGER BETWEEN 4000 AND 6000 LBS LBS |
| Scale Name | PRESSURE |
| Connector Type Vent | NOT PROVIDED |
| Pointer Color | BLACK |
| Connection Location | BACK |
| Stud Location | BACK |
| Scale Accuracy | 2 PCT MIDDLE HALF OF RANGE,3 PCT OVER BALANCE |
| Stud Quantity | 2 |
| Pointer Type | INDICATING |
| Scale Range | +0.000 TO 6000.000 POUNDS PRESSURE PER SQUARE INCH LBS |
| Connection Type | EXTERNAL |
| Material | PLASTIC PROTECTIVE CRYSTAL |
| Material | BRONZE ACTUATING ELEMENT |
| FSC Application Data | GAGE,PRESSURE,DIAL INDICATING,EXCEPT ENGINE |
| Overall Diameter | 2.781 INCHES NOMINAL IN |
| Surface Treatment | PAINT EPOXY CASE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 6685-00-684-1688 is a Gage,pressure,dial Indicating, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685 (No Item Name Available). Status: active.
NSN 6685-00-684-1688 has 3 cross-referenced part numbers: 644 (Ametek, Inc. Div Aerospace & Defense), P844 (Ametek, Inc. Div Aerospace & Defense), 3W51610 (Ingersoll Rand Co).
There are 3 known substitutes for 6685-00-684-1688: 6685-00-052-7378, 6685-00-082-1939, 6685-00-531-2019. Verify interchangeability with system specifications before substitution.
Key specifications for 644: Material: STEEL CASE; Color: BLACK CASE; Unable to Decode: UNABLE TO DECODE; Bezel Type: SNAP-ON. 30 total characteristics are documented in the Federal Logistics Information System.