E91B4MA

View detailed technical data, stock status, and sourcing information for: E91B4MA
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-644-2275

Item Name Code

03263

Assigment Date

01/01/1960 (66 years ago)

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

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
Length: 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
End Item Identification: virginia class cgn (41),kidd class ddg,spruance class dd (963),oliver perry class ffg,los angeles class ssn (688),emory s. land class as,wasp class lhd,forrestal class cv, aircraft, ( ac-130h, mc-130h, ec-130e, hc-130)
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-focus,0.610 in. min dia,0.650 in. max dia,0.320 in. min thickness,0.370 in. max thickness
Color: black, lusterless
Style Designator: round with cross face
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Below is a list of NSNs that have been officially superseded by this NSN: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
5355-00-667-7918	No Name Available	01/01/1989
5355-00-767-2036	No Name Available	10/25/1968

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-5	Knob
90-2-2G5	Knob
E91B4MA	Knob
KMS9D2L5	Knob
MS91528-2D2B5	Knob
MS91528-2D2BF	Knob
ZD231-1057G24	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-644-2275?

The FSCG of the NSN 5355-00-644-2275 is 5355

Does the NSN 5355-00-644-2275 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-644-2275 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 5355-00-644-2275 contain precious materials?

Precious metal content is unknown

Does NSN 5355-00-644-2275 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 5355-00-644-2275 was assigned to the Federal Catalog?

It was assigned 66 years ago, on Fri, Jan 1, 1960