MS16998-10

View detailed technical data, stock status, and sourcing information for: MS16998-10
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-983-6649

Item Name Code

16282

Assigment Date

01/01/1960 (66 years ago)

0.288 inches minimum and 0.375 inches maximum thread length, 3a thread class, flat chamfer head style, 0.344 inches minimum and 0.375 inches maximum fastener length, right-hand thread direction

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: 0.288 inches minimum and 0.375 inches maximum
Fastener Length: 0.344 inches minimum and 0.375 inches maximum
Head Style: flat chamfer
Head Diameter: 0.218 inches minimum and 0.226 inches maximum
Head Height: 0.134 inches minimum and 0.138 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.138 inches
Width Across Flats: 0.109 inches minimum and 0.111 inches maximum
Thread Quantity Per Inch: 40
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 45.0 rockwell c maximum overall
Minimum Yield Strength: 130000 pounds per square inch
Material: steel overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response overall
Thread Series Designator: unf
Nondefinitive Spec/Std Data: 6 type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-281-2131	No Name Available	12/01/1982
5305-00-814-9666	No Name Available	09/24/2012

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
166378-2	Socket Head Cap Screw
234-606SCP	Socket Head Cap Screw
MS16998-10	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-983-6649?

The FSCG of the NSN 5305-00-983-6649 is 5305

Does the NSN 5305-00-983-6649 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-983-6649 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 5305-00-983-6649 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-983-6649 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 5305-00-983-6649 was assigned to the Federal Catalog?

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