908943C1

View detailed technical data, stock status, and sourcing information for: 908943C1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-176-3973

Item Name Code

18257

Assigment Date

04/11/1984 (42 years ago)

right-hand thread direction, 0.255 inches minimum and 0.375 inches maximum thread length, 2a thread class, 0.344 inches minimum and 0.375 inches maximum fastener length, hexagon head style

Product Characteristics

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

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.255 inches minimum and 0.375 inches maximum
Fastener Length: 0.344 inches minimum and 0.375 inches maximum
Head Style: hexagon
Head Height: 0.150 inches minimum and 0.163 inches maximum
Width Between Flats: 0.428 inches minimum and 0.438 inches maximum
Hole Diameter: 0.0605 inches minimum and 0.0685 inches maximum
Nominal Thread Diameter: 0.250 inches
Hole Quantity: 1
Hole Type: drilled
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 150000 pounds per square inch
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Hole Configuration Style: hexagon flats
Surface Finish: 63.0 microinches threads
Material: steel comp 1013 or steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019 or steel comp 1020 or steel comp 1021 or steel comp 1022 or steel comp 1023 or steel comp 1524 or steel comp 1025 or steel comp 1026 or steel comp 1527 or steel comp 1029 or steel comp 1030 or steel comp 1033 or steel comp 1034 or steel comp 1035 or steel comp 1536 or steel comp 1037 or steel comp 1038 or steel comp 1039 or steel comp 1040 or steel comp 1541 overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astm b633 ty 2 sc 3 assn std single treatment response overall
Thread Series Designator: unf
Nondefinitive Spec/Std Data: 2 type and 10p style and 8 grade

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-914-3793	No Name Available	04/01/2008

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
908943C1	Hexagon Head Cap Screw
B1821BH025F038D	Hexagon Head Cap Screw
MS18153-1	Hexagon Head Cap Screw
MS51096-301	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-176-3973?

The FSCG of the NSN 5305-01-176-3973 is 5305

Does the NSN 5305-01-176-3973 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-176-3973 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 5305-01-176-3973 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-176-3973 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 5305-01-176-3973 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Wed, Apr 11, 1984