2CH418

View detailed technical data, stock status, and sourcing information for: 2CH418
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part 2CH418 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-983-5344

Item Name Code

16282

Assigment Date

01/01/1962 (64 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

right-hand thread direction, 0.469 inches minimum and 0.500 inches maximum fastener length, flat chamfer head style, 3a thread class, 0.358 inches minimum and 0.500 inches maximum thread length

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: 0.358 inches minimum and 0.500 inches maximum
Fastener Length: 0.469 inches minimum and 0.500 inches maximum
Head Style: flat chamfer
Head Diameter: 0.457 inches minimum and 0.468 inches maximum
Head Height: 0.306 inches minimum and 0.312 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.250 inches minimum and 0.253 inches maximum
Thread Quantity Per Inch: 18
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: unc
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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-275-5293	No Name Available	07/23/2019
5305-00-871-4556	No Name Available	08/09/1967

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
2CH418	Socket Head Cap Screw
MS16997-76	Socket Head Cap Screw
XB78	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-983-5344?

The FSCG of the NSN 5305-00-983-5344 is 5305

Does the NSN 5305-00-983-5344 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-983-5344 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 5305-00-983-5344 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-983-5344 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 5305-00-983-5344 was assigned to the Federal Catalog?

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