FPN1-4-28SCL

View detailed technical data, stock status, and sourcing information for: FPN1-4-28SCL
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-842-2603

Item Name Code

15892

Assigment Date

01/04/1967 (59 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.

0.138 inches nominal pilot length, prevailing torque all metal design locking feature, 0.493 inches minimum and 0.499 inches maximum pilot diameter, right-hand thread direction, 3b 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: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Pilot Diameter: 0.493 inches minimum and 0.499 inches maximum
Pilot Length: 0.138 inches nominal
Lubrication: dry film lubricant
Nut Style: clinch
Nut Diameter: 0.560 inches nominal
Nut Height: 0.340 inches nominal
Temp Rating: 450.0 fahrenheit nominal
Thread Series: unf
Thread Quantity Per Inch: 28
Nominal Thread Size: 0.250 inches
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

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
334-1155-000	Clinch Self-Locking Nut
FPN1-4-28SCL	Clinch Self-Locking Nut
FPN250-28SCL	Clinch Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-842-2603?

The FSCG of the NSN 5310-00-842-2603 is 5310

Does the NSN 5310-00-842-2603 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-842-2603 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 5310-00-842-2603 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-842-2603 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 5310-00-842-2603 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Wed, Jan 4, 1967