51B2MA

View detailed technical data, stock status, and sourcing information for: 51B2MA
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5355 Knobs and Pointers

National Stock Number

5355-00-813-2078

Item Name Code

03263

Assigment Date

01/01/1962 (64 years ago)

0.325 inches maximum distance from hole center to knob/skirt base, 0.177 inches minimum counterbore depth, 0.300 inches minimum counterbore diameter, 0.127 inches minimum and 0.129 inches maximum inside diameter, 2 setscrew hole quantity

Product Characteristics

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

Inside Diameter: 0.127 inches minimum and 0.129 inches maximum
Counterbore Diameter: 0.300 inches minimum
Counterbore Depth: 0.177 inches minimum
Setscrew Hole Quantity: 2
Distance From Hole Center To Knob/Skirt Base: 0.325 inches maximum
Overall Depth: 0.560 inches minimum
Gripping Surface Condition: grip aid
Shaft Accommodation Style: counterbored
Outside Diameter: 0.490 inches minimum and 0.530 inches maximum
Skirt Style: stepped
Attachment Method: setscrews
Overall Thickness: 0.625 inches minimum and 0.685 inches maximum
End Item Identification: w/s:helicopter, mh-53e; aircraft (ac-130h, mc-130h, ec-130e, hc-130); deep submergence systems programs (dssp); fire control system, mk 92 (fcs); communications systems, an/wrr-7; support equipment, b-1 aircraft; aircraft, c-2a (reprocured); helicopter, advance attack, ah-1w; radar set, an/pps-5b
Material Transparency: opaque
Screw Drive Type: hexagon socket
Thread Quantity Per Inch: 40 screw hole
Nominal Thread Size: 0.112 inches screw hole
Skirt Outside Diameter: 0.460 inches maximum
Skirt Design: nondetachable
Color: black, lusterless
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Below is a list of NSNs that have been officially superseded by this NSN: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
5355-00-003-4179	No Name Available	11/21/2003
5355-00-062-0855	No Name Available	08/01/1986
5355-00-485-0259	No Name Available	05/20/1973
5355-00-801-4358	No Name Available	12/25/1965
5355-00-858-5235	No Name Available	01/01/1960
5355-01-080-3010	No Name Available	07/01/1985
5355-01-110-5265	No Name Available	06/01/1997
5355-01-118-0159	No Name Available	12/05/2013

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:

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0D1B	Knob
10082613	Knob
1018963-001	Knob
115935-031	Knob
222729-001	Knob
50-2-1	Knob
50-2-1G	Knob
51B2MA	Knob
5355008132078	Knob
5355PL0960013	Knob
5L1RS	Knob
752840-7	Knob
8418755-002	Knob
BG-34	Knob
H1188	Knob
H1189	Knob
H95016X4B1	Knob
KMS5D1LNR	Knob
KMS5DILNR	Knob
MS91528-0D18	Knob
MS91528-0D1B	Knob
MS915280D1B	Knob
PS50-1	Knob

FAQs

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

What is the FSCG of the NSN 5355-00-813-2078?

The FSCG of the NSN 5355-00-813-2078 is 5355

Does the NSN 5355-00-813-2078 have a Schedule B code assigned?

Yes, the Schedule B code is 8531900002

Does NSN 5355-00-813-2078 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 5355-00-813-2078 contain precious materials?

Item does not contain precious metal.

Does NSN 5355-00-813-2078 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 5355-00-813-2078 was assigned to the Federal Catalog?

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