5305-01-491-4251

Find complete technical information, availability, and procurement data for: 5305-01-491-4251
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-491-4251

Item Name Code

29294

Assigment Date

10/22/2001 (24 years ago)

An item which constitutes the detachable portion of a switch, circuit breaker, controller, motor starter actuator or items equipped with a key type station selector device etc, upon which the pushing pressure is applied to operate the item. It may be of any shape or design and may include a detachable top, marked with letter(s), numeral(s), or other characters, and/or a plunger or rod as an integral or detachable part. Excludes:knob; handle, switch; bar actuator, electrical switch and keytop, keyboard.

3a thread class, flat countersunk head style, right-hand thread direction, 1.160 inches minimum and 1.190 inches maximum fastener length, 0.425 inches nominal thread 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: 0.425 inches nominal
Fastener Length: 1.160 inches minimum and 1.190 inches maximum
Head Style: flat countersunk
Head Diameter: 0.449 inches minimum and 0.507 inches maximum
Spline Major Diameter: 0.173 inches minimum and 0.183 inches maximum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style: torx
End Item Identification: adv tech bmbr
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.562 inches nominal
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 160000 pounds per square inch
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Special Features: plastic cap permanently affixed to head
Material: plastic top of head
Material: titanium alloy uns r56400 fastener
Material Document And Classification: 09a196-2,cage1w025 mfr ref single material response top of head
Material Document And Classification: ams4928 assn std single material response or ams4967 assn std single material response fastener
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
03A519-4-12C	Close Tolerance Screw
CB9350-4-12C	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-491-4251?

The FSCG of the NSN 5305-01-491-4251 is 5305

Does the NSN 5305-01-491-4251 have a Schedule B code assigned?

Yes, the Schedule B code is 8109900000

Does NSN 5305-01-491-4251 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 5305-01-491-4251 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-491-4251 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 5305-01-491-4251 was assigned to the Federal Catalog?

It was assigned 24 years ago, on Mon, Oct 22, 2001