5305-01-268-5566

Find complete technical information, availability, and procurement data for: 5305-01-268-5566
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-268-5566

Item Name Code

29294

Assigment Date

12/03/1987 (38 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

0.892 inches minimum and 0.922 inches maximum fastener length, 3a thread class, 0.444 inches minimum and 0.494 inches maximum thread length, right-hand thread direction, flat countersunk 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: 0.444 inches minimum and 0.494 inches maximum
Fastener Length: 0.892 inches minimum and 0.922 inches maximum
Head Style: flat countersunk
Head Diameter: 0.497 inches minimum and 0.507 inches maximum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.428 inches minimum and 0.448 inches maximum
Thread Quantity Per Inch: 28
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Special Features: thd hole in top of head 0.138-32 unjc-3b; threaded hole 0.300 in. min 0.345 in. max dp,counterbore 0.145-0.150 in.long,0.060 in. wide in unthd shank; distant from top of head to beginning of injection port 0.210 in
Material: titanium alloy uns r56400 overall
Material Document And Classification: ams 4928 assn std 1st material response or ams 4967 assn std 2nd material response overall
Thread Series Designator: unjf

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
11839V4-7-21	Close Tolerance Screw
3M1034V4-7-21	Close Tolerance Screw
HT4075V4-7-21	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-268-5566?

The FSCG of the NSN 5305-01-268-5566 is 5305

Does the NSN 5305-01-268-5566 have a Schedule B code assigned?

Yes, the Schedule B code is 8109900000

Does NSN 5305-01-268-5566 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 5305-01-268-5566 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-268-5566 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 5305-01-268-5566 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, Dec 3, 1987