MS9555-08

View detailed technical data, stock status, and sourcing information for: MS9555-08
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-170-1424

Item Name Code

06657

Assigment Date

02/11/1973 (53 years ago)

"a nut having a flat bearing surface and 6 flat sides with slots in its upper portion. An integral feature is incorporated for locking on the threads of a mating member. The slots, when used in conjunction with a solid or split (cotter) pin, act as an extra "fail safe", feature in critical applications. Excludes:nut (1), self-locking, castellated, octagon."

double hexagon w/ hole head style, 0.615 inches minimum and 0.635 inches maximum fastener length, 0.533 inches minimum and 0.573 inches maximum thread length, right-hand thread direction, 3a thread class

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.533 inches minimum and 0.573 inches maximum
Fastener Length: 0.615 inches minimum and 0.635 inches maximum
Head Style: double hexagon w/ hole
Head Height: 0.230 inches nominal
Width Between Flats: 0.219 inches nominal
Extended Washer Diameter: 0.312 inches nominal
Extended Washer Thickness: 0.030 inches minimum
End Item Identification: w/s: engine, aircraft tf-34
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 36
Minimum Tensile Strength: 130000 pounds per square inch
Hardness Rating: 24.0 rockwell c minimum and 35.0 rockwell c maximum
Screw Material: iron alloy 660
Thread Series Designator: unjf

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
1106-032	Machine Screw
MS9555-08	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-170-1424?

The FSCG of the NSN 5305-00-170-1424 is 5305

Does the NSN 5305-00-170-1424 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-170-1424 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 5305-00-170-1424 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-170-1424 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 5305-00-170-1424 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Sun, Feb 11, 1973