HT04R40F079

View detailed technical data, stock status, and sourcing information for: HT04R40F079
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-183-8721

Item Name Code

16282

Assigment Date

07/11/1984 (42 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.

0.360 inches minimum and 0.438 inches maximum thread length, watertight head style, right-hand thread direction, 2a thread class, 0.418 inches minimum and 0.438 inches maximum fastener 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: 2a
Thread Direction: right-hand
Thread Length: 0.360 inches minimum and 0.438 inches maximum
Fastener Length: 0.418 inches minimum and 0.438 inches maximum
Head Style: watertight
Head Diameter: 0.205 inches minimum and 0.238 inches maximum
Head Height: 0.070 inches minimum and 0.080 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.112 inches
Thread Quantity Per Inch: 40
Special Features: furnished with one o-ring
Material: steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384 or steel comp xm-7 overall
Material Document And Classification: qq-s-763 fed spec 1st material response or qq-s-763 fed spec 2nd material response or qq-s-763 fed spec 3rd material response or astm a493 assn std 1st material response or astm a493 assn std 2nd material response or astm a493 assn std 3rd material response or astm a493 assn std 4th material response or astm a493 assn std 5th material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unc

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
HT04R40F079	Socket Head Cap Screw
MS3213-4L	Socket Head Cap Screw
NAS3213-4L	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-183-8721?

The FSCG of the NSN 5305-01-183-8721 is 5305

Does the NSN 5305-01-183-8721 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-183-8721 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 5305-01-183-8721 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-183-8721 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 5305-01-183-8721 was assigned to the Federal Catalog?

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