BL21772

View detailed technical data, stock status, and sourcing information for: BL21772
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

National Stock Number

5985-00-276-3336

Item Name Code

00305

Assigment Date

01/01/1963 (63 years ago)

90.0 single bend h-plane bend angle in deg, interlocked single tubing segment tubing wall construction style, right-hand second flange all connection facilities thread direction, internal, rectangular external, rectangular cross-sectional shape style, 2b second flange all connection facilities thread class

Product Characteristics

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

Cross-Sectional Shape Style: internal, rectangular external, rectangular
Thread Class: 2b second flange all connection facilities
Thread Direction: right-hand second flange all connection facilities
Bend Angle In Deg: 90.0 single bend h-plane
Tubing Wall Construction Style: interlocked single tubing segment
Flange Quantity: 2
Flange Inside Width: 1.122 inches nominal first flange
Flange Inside Width: 1.253 inches nominal second flange
Flange Inside Height: 0.497 inches nominal first flange
Flange Inside Height: 0.628 inches nominal second flange
Flange Outside Width: 1.875 inches nominal first flange
Flange Outside Width: 1.875 inches nominal second flange
Flange Outside Height: 1.875 inches nominal first flange
Flange Outside Height: 1.875 inches nominal second flange
Flange Depth: 0.4375 inches nominal second flange
Flange Depth: 0.625 inches nominal first flange
Flange Connecting Hole Diameter: 0.169 inches nominal first flange all connection facilities
Thread Quantity Per Inch: 32 second flange all connection facilities
Waveguide Outside Width: 1.122 inches nominal
Nominal Thread Size: 0.164 inches second flange all connection facilities
Waveguide Inside Width: 0.497 inches nominal
Waveguide Inside Height: 0.625 inches nominal
Waveguide Outside Height: 1.250 inches nominal
Waveguide Longer Offset Distance: 4.062 inches nominal
Flange Connecting Facility And Quantity: 8 threaded hole second flange all connection facilities
Flange Connecting Facility And Quantity: 8 unthreaded hole first flange all connection facilities
Flange Style: choke type first flange
Flange Style: cover type second flange
Waveguide Offset Distance: 4.062 inches nominal
Flexibility: rigid single tubing segment
Material: copper alloy single tubing segment
Style Designator: bend type
Thread Series Designator: unc second flange all connection facilities
Specification/Standard Data: 81349-mil-w-3970/13 government specification

Replaces National Stock Numbers

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

NSN	Name	Date
5985-00-243-0588	No Name Available	06/21/1972
5985-00-265-8989	No Name Available	06/21/1972
5985-00-319-4497	No Name Available	01/01/2009

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
BL21771	Waveguide Assembly
BL21772	Waveguide Assembly
M3970/13-004	Waveguide Assembly
MIL-DTL-3970/13	Waveguide Assembly
MIL-W-3970/13	Waveguide Assembly
MS35156-4	Waveguide Assembly
RE49D655TYPEUG715U	Waveguide Assembly
UG-143/U	Waveguide Assembly
UG-715/U	Waveguide Assembly

FAQs

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

What is the FSCG of the NSN 5985-00-276-3336?

The FSCG of the NSN 5985-00-276-3336 is 5985

Does the NSN 5985-00-276-3336 have a Schedule B code assigned?

Yes, the Schedule B code is 8529109000

Does NSN 5985-00-276-3336 require demilitarization?

Usml or ccl military items - demil required. Destroy item and components to prevent restoration or repair to a usable condition. (note 5).

Does NSN 5985-00-276-3336 contain precious materials?

Precious metal content is unknown

Does NSN 5985-00-276-3336 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 5985-00-276-3336 was assigned to the Federal Catalog?

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