3-1-2-1DFM1-4CBM

View detailed technical data, stock status, and sourcing information for: 3-1-2-1DFM1-4CBM
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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

6685-00-812-6445

Item Name Code

07428

Assigment Date

01/01/1962 (64 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

10.0 pounds graduation unit, 1.090 inches nominal overall depth, 3.940 inches nominal overall diameter, logistics support vessel end item identification, single bourdon tube actuation type

Product Characteristics

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

Overall Depth: 1.090 inches nominal
Overall Diameter: 3.940 inches nominal
End Item Identification: logistics support vessel
Graduation Unit: 10.0 pounds
Actuation Type: single bourdon tube
Adjustability: adjustable
Scale Range: +0.0 to 100.0 pounds pressure per square inch
Scale Name: pressure
Dial Size: 3-1/2 in.
Connection Quantity: 1
Pointer Color: black
Pointer Type: indicating
Scale Type: single
Scale Smallest Increment: 2.0 pounds
Connection Type: external
Mounting Method: stud
Stud Quantity: 2
Scale Accuracy: 2 pct entire range
Scale Inscription/Background Color: black figures on white background
Connection Location: back
Bezel Type: snap-on
Connection Size: 0.250 in. npt dia
Stud Location: back
Connector Type Vent: not provided
Material: copper alloy actuating element
Material: plastic polycarbonate protective crystal
Material: steel case
Surface Treatment: enamel case
Fsc Application Data: gage,pressure,dial indicating,except engine

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
6685-00-145-1219	No Name Available	06/21/1971
6685-00-422-2993	No Name Available	09/07/1974
6685-00-726-2057	No Name Available	10/01/1996
6685-00-883-1030	No Name Available	09/01/1996
6685-01-103-6355	No Name Available	03/01/1995

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
138028A	Dial Indicating Pressure Gage
1ABE03540AFA001	Dial Indicating Pressure Gage
3-1-2-1DFM1-4CBM	Dial Indicating Pressure Gage
3-1-21DFFM1-4LBM	Dial Indicating Pressure Gage
694B35UCB250PSI110	Dial Indicating Pressure Gage
J8848Z-001	Dial Indicating Pressure Gage

FAQs

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

What is the FSCG of the NSN 6685-00-812-6445?

The FSCG of the NSN 6685-00-812-6445 is 6685

Does the NSN 6685-00-812-6445 have a Schedule B code assigned?

Yes, the Schedule B code is 9026200000

Does NSN 6685-00-812-6445 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 6685-00-812-6445 contain precious materials?

Item does not contain precious metal.

Does NSN 6685-00-812-6445 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 6685-00-812-6445 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962