HT4027-7-14

View detailed technical data, stock status, and sourcing information for: HT4027-7-14
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-514-0506

Item Name Code

29294

Assigment Date

10/15/2003 (22 years ago)

A rectangular or square shaped item with cover to be fitted in a deck or platform hatchway opening, used for access to other decks, or platforms or levels. The item may contain a marine scuttle. Excludes:door, metal, marine structural.

0.656 inches nominal thread length, 1.546 inches nominal fastener length, flat countersunk undercut head style, 3a thread class, 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: 0.656 inches nominal
Fastener Length: 1.546 inches nominal
Head Style: flat countersunk undercut
Head Diameter: 0.612 inches minimum and 0.672 inches maximum
Head Height: 0.101 inches nominal
Grip Diameter: 0.4365 inches minimum and 0.4370 inches maximum
Internal Drive Style: high-torque
End Item Identification: wing aircraft
Nominal Thread Diameter: 0.4375 inches
Grip Length: 0.875 inches nominal
Thread Quantity Per Inch: 20
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: nickel alloy 718 overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
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
HT4027-7-14	Close Tolerance Screw
ST3M557-7-14	Close Tolerance Screw
WC4027-7-14	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-514-0506?

The FSCG of the NSN 5305-01-514-0506 is 5305

Does the NSN 5305-01-514-0506 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5305-01-514-0506 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 5305-01-514-0506 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-514-0506 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 5305-01-514-0506 was assigned to the Federal Catalog?

It was assigned 22 years ago, on Wed, Oct 15, 2003