5305-01-258-8500

Find complete technical information, availability, and procurement data for: 5305-01-258-8500
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-258-8500

Item Name Code

33044

Assigment Date

07/09/1987 (39 years ago)

A nut, flat on top and bottom, having four flat sides of which two parallel sides are shorter than the other two. For items having a thickness (or height) exceeding two times the width, use post, electrical-mechanical equipment. (when height or thickness and/or width is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

0.420 inches nominal head diameter, 0.710 inches minimum and 0.750 inches maximum fastener length, right-hand thread direction, knurled no. 1 head style, 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
Fastener Length: 0.710 inches minimum and 0.750 inches maximum
Head Style: knurled no. 1
Head Diameter: 0.420 inches nominal
Head Height: 0.290 inches nominal
Internal Drive Style: slot
Material Accommodated Thickness: 0.032 inches minimum and 0.093 inches maximum
Nominal Thread Diameter: 0.164 inches
Thread Quantity Per Inch: 32
Criticality Code Justification: zzzy
Material: aluminum alloy 6061 stand-off
Material: steel comp 302 spring
Material: steel comp 301 primary washer
Material: steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384 or steel comp 410 or steel comp 429 or steel comp 430 or steel comp 431 or steel comp 440c fastener
Material Document And Classification: astm a580 assn std single material response spring
Material Document And Classification: mil-s-5059 mil spec single material response primary washer
Material Document And Classification: qq-a-225/8 t6 fed spec single material response stand-off
Surface Treatment: anodize stand-off
Surface Treatment: passivate fastener
Surface Treatment: passivate primary washer
Surface Treatment: passivate spring
Special Test Features: special quality control testing
Surface Treatment Document And Classification: mil-a-8625 ty 1 cl 1 mil spec single treatment response stand-off
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response fastener
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response primary washer
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response spring
Test Data Document: "81349-mil-p-23199 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Thread Series Designator: unc
Reference Number Differentiating Characteristics: as differentiated by material which must conform to ships parts control center special quality control provisions

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
F7500-8-B-5	Panel Screw Assembly
LL-HX4-9870	Panel Screw Assembly

FAQs

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

What is the FSCG of the NSN 5305-01-258-8500?

The FSCG of the NSN 5305-01-258-8500 is 5305

Does the NSN 5305-01-258-8500 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-258-8500 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 5305-01-258-8500 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-258-8500 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 5305-01-258-8500 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, Jul 9, 1987