6685-00-557-0644

Find complete technical information, availability, and procurement data for: 6685-00-557-0644
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Federal Supply Group

Instruments and Laboratory Equipment

Federal Supply Classification

6685 Humidity Measuring and Controlling Instruments, Temperature and Pressure

National Stock Number

6685-00-557-0644

Item Name Code

07428

Assigment Date

01/01/1963 (63 years ago)

4.750 inches nominal overall diameter, 0.218 inches nominal mounting hole diameter, 1.406 inches nominal overall depth, 4.312 inches nominal bolt circle diameter, 3 mounting hole quantity

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Overall Depth: 1.406 inches nominal
Bolt Circle Diameter: 4.312 inches nominal
Mounting Hole Diameter: 0.218 inches nominal
Mounting Hole Quantity: 3
Overall Diameter: 4.750 inches nominal
Graduation Unit: 500.000 pounds
Actuation Type: single bourdon tube
Adjustability: adjustable
Scale Range: +0.000 to 4000.000 pounds pressure per square inch
Scale Name: pressure
Dial Size: 3-1/2 in. dia
Connection Quantity: 1
Pointer Color: black
Pointer Type: indicating
Scale Marking: /hydraulic/
Scale Type: single
Scale Smallest Increment: 100.000 pounds
Connection Type: internal
Mounting Method: flush panel
Scale Accuracy: porm 1 pct entire range
Scale Inscription/Background Color: black figures on white background
Connection Location: lower back
Bezel Type: slips-on
Connection Size: per and10050-4
Connector Type Vent: not provided
Special Features: restriction screw,rs60; weep hole,0.125 in. dia
Material: glass protective crystal
Material: steel actuating element
Material: steel case

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
9DFFM	Dial Indicating Pressure Gage

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 6685-00-557-0644?

The FSCG of the NSN 6685-00-557-0644 is 6685

Does the NSN 6685-00-557-0644 have a Schedule B code assigned?

Yes, the Schedule B code is 9026200000

Does NSN 6685-00-557-0644 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 6685-00-557-0644 contain precious materials?

Precious metal content is unknown

Does NSN 6685-00-557-0644 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 6685-00-557-0644 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963