81340267N

View detailed technical data, stock status, and sourcing information for: 81340267N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-185-2134

Item Name Code

18257

Assigment Date

07/26/1984 (42 years ago)

An insulator that is essentially thin and flat, with one through hole centrally located. The general shape may vary by the addition of features such as beveled edges, indented surfaces, through hole keys, and/or peripheral flats. The thickness measured between the two parallel bearing surfaces must not exceed 25 percent of the outside diameter or the shortest distance between peripheral flats. The thickness measured between the two parallel bearing surfaces must not exceed 25 percent of the outside diameter or the shortest distance between peripheral flats. Excludes:items with more than one hole. See also insulator, disk; insulator, bead; insulator, bushing; and insulator, plate

1.188 inches minimum and 1.312 inches maximum fastener length, 2a thread class, hexagon head style, right-hand thread direction, 1.034 inches minimum and 1.312 inches maximum thread 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: 1.034 inches minimum and 1.312 inches maximum
Fastener Length: 1.188 inches minimum and 1.312 inches maximum
Head Style: hexagon
Head Height: 0.302 inches minimum and 0.323 inches maximum
Width Between Flats: 0.736 inches minimum and 0.750 inches maximum
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 13
Material: steel comp 1013 or steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019 or steel comp 1020 or steel comp 1021 or steel comp 1022 or steel comp 1023 or steel comp 1524 or steel comp 1025 or steel comp 1026 or steel comp 1527 or steel comp 1029 or steel comp 1030 or steel comp 1033 or steel comp 1034 or steel comp 1035 or steel comp 1536 or steel comp 1037 or steel comp 1038 or steel comp 1039 or steel comp 1040 or steel comp 1541 overall
Material Document And Classification: sae grade 5 assn std all material responses overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: qq-z-325,type 2,class 2 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
81340267	Hexagon Head Cap Screw
81340267N	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-185-2134?

The FSCG of the NSN 5305-01-185-2134 is 5305

Does the NSN 5305-01-185-2134 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-185-2134 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 5305-01-185-2134 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-185-2134 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 5305-01-185-2134 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Thu, Jul 26, 1984