5305-01-412-0840

Find complete technical information, availability, and procurement data for: 5305-01-412-0840
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-412-0840

Item Name Code

29294

Assigment Date

04/11/1995 (31 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

right-hand thread direction, 1.263 inches minimum and 1.293 inches maximum fastener length, flat countersunk head style, 0.403 inches nominal thread length, 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
Thread Length: 0.403 inches nominal
Fastener Length: 1.263 inches minimum and 1.293 inches maximum
Head Style: flat countersunk
Head Diameter: 0.438 inches minimum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style: offset cruciform (torque set)
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.865 inches minimum and 0.885 inches maximum
Features Provided: dry film lubricant
Thread Quantity Per Inch: 28
Countersink Angle: 129.0 degrees minimum and 131.0 degrees maximum
Special Features: dry film lubricant on threads only
Material: cobalt comp mp-35-n overall
Material Document And Classification: ams 5844 assn std single material response overall
Surface Treatment: passivate 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
03A416-4-14L	Close Tolerance Screw
125301-4-14L	Close Tolerance Screw
HR258-4-14L	Close Tolerance Screw
PBF1571-4-14L	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-412-0840?

The FSCG of the NSN 5305-01-412-0840 is 5305

Does the NSN 5305-01-412-0840 have a Schedule B code assigned?

Yes, the Schedule B code is 8105900000

Does NSN 5305-01-412-0840 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 5305-01-412-0840 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-412-0840 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 5305-01-412-0840 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Tue, Apr 11, 1995