D91B4MA

View detailed technical data, stock status, and sourcing information for: D91B4MA
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-644-2269

Item Name Code

03263

Assigment Date

01/01/1963 (63 years ago)

0.252 inches minimum and 0.254 inches maximum inside diameter, 0.640 inches minimum counterbore diameter, 2 setscrew hole quantity, 0.320 inches minimum counterbore depth, 0.484 inches maximum distance from hole center to knob/skirt base

Product Characteristics

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

Inside Diameter: 0.252 inches minimum and 0.254 inches maximum
Counterbore Diameter: 0.640 inches minimum
Counterbore Depth: 0.320 inches minimum
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.484 inches maximum
Overall Depth: 0.730 inches minimum
Gripping Surface Condition: grip aid
Shaft Accommodation Style: counterbored
Outside Diameter: 0.890 inches minimum and 0.930 inches maximum
Skirt Style: stepped
Attachment Method: setscrews
Overall Thickness: 1.325 inches minimum and 1.425 inches maximum
Material Transparency: opaque
Screw Drive Type: hexagon socket
Thread Quantity Per Inch: 32 screw hole
Nominal Thread Size: 0.164 inches screw hole
Skirt Outside Diameter: 0.845 inches maximum
Skirt Design: nondetachable
Special Features: tactile form-gain,0.610 in. min dia,0.650 in. max dia,0.365 in. min thickness,0.415 in. max thickness
Style Designator: round
Thread Series Designator: unc screw hole

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5355-00-668-5624	No Name Available	12/17/1965

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
509-2-2M-4	Knob
90-2-2G4	Knob
D91B4MA	Knob
KMS9D2L4	Knob
KMSD2L4	Knob
MS91528-2D2B4	Knob
ZB231-1057G22	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-644-2269?

The FSCG of the NSN 5355-00-644-2269 is 5355

Does the NSN 5355-00-644-2269 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-644-2269 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 5355-00-644-2269 contain precious materials?

Precious metal content is unknown

Does NSN 5355-00-644-2269 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5355-00-644-2269 was assigned to the Federal Catalog?

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