H623DB001 ITEM 16

View detailed technical data, stock status, and sourcing information for: H623DB001 ITEM 16
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-413-5481

Item Name Code

16282

Assigment Date

05/17/1995 (31 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

2.000 inches nominal fastener length, 1.875 inches maximum thread length, flat countersunk head style, right-hand thread direction, 3a thread class

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: 1.875 inches maximum
Fastener Length: 2.000 inches nominal
Head Style: flat countersunk
Head Diameter: 0.720 inches minimum and 0.781 inches maximum
Spline Minor Diameter: 0.219 inches minimum and 0.221 inches maximum
Spline Major Diameter: 0.254 inches minimum and 0.256 inches maximum
Spline Width: 0.058 inches minimum and 0.060 inches maximum
Locking Feature: patch threads
Internal Drive Style: six spline
Nominal Thread Diameter: 0.375 inches
Thread Quantity Per Inch: 16
Countersink Angle: 80.0 degrees minimum and 84.0 degrees maximum
Material: steel uns k03104 fastener
Material Document And Classification: astm a574 assn std single material response locking feature
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
A640038C200	Socket Head Cap Screw
H623DB001 ITEM 16	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-413-5481?

The FSCG of the NSN 5305-01-413-5481 is 5305

Does the NSN 5305-01-413-5481 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-413-5481 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 5305-01-413-5481 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-413-5481 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 5305-01-413-5481 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Wed, May 17, 1995