5305-01-021-1856

Find complete technical information, availability, and procurement data for: 5305-01-021-1856
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-021-1856

Item Name Code

06657

Assigment Date

05/10/1976 (50 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

0.230 inches minimum and 0.270 inches maximum thread length, 3a thread class, right-hand thread direction, 1.035 inches minimum and 1.055 inches maximum fastener length, fillister head style

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: 0.230 inches minimum and 0.270 inches maximum
Fastener Length: 1.035 inches minimum and 1.055 inches maximum
Head Style: fillister
Head Diameter: 0.166 inches minimum and 0.183 inches maximum
Head Height: 0.070 inches minimum and 0.085 inches maximum
Hole Diameter: 0.039 inches nominal
Internal Drive Style: slot
Nominal Thread Diameter: 0.112 inches
Hole Quantity: 1
Thread Quantity Per Inch: 40
Screw Material: steel comp 1213 or steel
Screw Material Document And Classification: qq-s-637 fed spec all material responses
Screw Surface Treatment: cadmium
Screw Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response
Head Hole Configuration Style: hexagon flats
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
32529	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-021-1856?

The FSCG of the NSN 5305-01-021-1856 is 5305

Does the NSN 5305-01-021-1856 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-021-1856 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 5305-01-021-1856 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-021-1856 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 5305-01-021-1856 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Mon, May 10, 1976