5305-01-666-1237

Find complete technical information, availability, and procurement data for: 5305-01-666-1237
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-666-1237

Item Name Code

29294

Assigment Date

08/24/2017 (8 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.)

flat countersunk head style, 3a thread class, 0.403 inches nominal thread length, right-hand thread direction, 1.0905 inches nominal fastener 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: 3a
Thread Direction: right-hand
Thread Length: 0.403 inches nominal
Fastener Length: 1.0905 inches nominal
Head Style: flat countersunk
Head Diameter: 0.4640 inches minimum and 0.5066 inches maximum
Grip Diameter: 0.2802 inches minimum and 0.2807 inches maximum
Internal Drive Style: offset cruciform (torque set)
End Item Identification: b1-bacft
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.6875 inches nominal
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: titanium alloy uns r56400 overall
Material Document And Classification: ams 4928 assn std single material response or ams 4967 assn std single material response overall
Thread Series Designator: unjf
Specification/Standard Data: 80205-nas1580 professional/industrial association standard

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
NAS1580V4R11Y	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-666-1237?

The FSCG of the NSN 5305-01-666-1237 is 5305

Does the NSN 5305-01-666-1237 have a Schedule B code assigned?

Yes, the Schedule B code is 8108908000

Does NSN 5305-01-666-1237 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 5305-01-666-1237 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-666-1237 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 5305-01-666-1237 was assigned to the Federal Catalog?

It was assigned 8 years ago, on Thu, Aug 24, 2017