427775-1

View detailed technical data, stock status, and sourcing information for: 427775-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-417-1086

Item Name Code

16282

Assigment Date

07/30/1995 (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.

6.625 inches nominal fastener length, 3a thread class, flat chamfer head style, 1.479 inches minimum and 1.500 inches maximum head diameter, 0.988 inches minimum and 1.000 inches maximum head height

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
Fastener Length: 6.625 inches nominal
Head Style: flat chamfer
Head Diameter: 1.479 inches minimum and 1.500 inches maximum
Head Height: 0.988 inches minimum and 1.000 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 1.000 inches
Width Across Flats: 0.750 inches nominal
Thread Quantity Per Inch: 8
Material: steel overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416 ty2 cl 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
427775-1	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-417-1086?

The FSCG of the NSN 5305-01-417-1086 is 5305

Does the NSN 5305-01-417-1086 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-417-1086 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 5305-01-417-1086 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-417-1086 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 5305-01-417-1086 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Sun, Jul 30, 1995