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5305-00-413-9791

Find complete technical information, availability, and procurement data for: 5305-00-413-9791

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5305-00-413-9791
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-413-9791
Item Name Code
18257
Assigment Date
05/01/1974 (52 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

right-hand thread direction, dished hexagon head style, 2.407 inches minimum and 2.500 inches maximum fastener length, 1.250 inches minimum and 1.438 inches maximum thread length, 2a 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
2a
Thread Direction
right-hand
Thread Length
1.250 inches minimum and 1.438 inches maximum
Fastener Length
2.407 inches minimum and 2.500 inches maximum
Head Style
dished hexagon
Head Height
0.312 inches minimum and 0.327 inches maximum
Width Between Flats
0.736 inches minimum and 0.750 inches maximum
Locking Feature
distortions bearing surface of head
Nominal Thread Diameter
0.500 inches
Features Provided
finished head
Thread Quantity Per Inch
13
Minimum Tensile Strength
150000 pounds per square inch
Hardness Rating
32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Material
steel overall
Material Document And Classification
sae gr 8 assn std single material response overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416,type 2,class 2 fed spec single treatment response overall
Thread Series Designator
unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5306-00-022-0761 No Name Available 03/01/1986
5306-00-097-8966 No Name Available 02/01/1982

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
A720050C225 Hexagon Head Cap Screw
MS35764-873 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-413-9791?
The FSCG of the NSN 5305-00-413-9791 is 5305
Does the NSN 5305-00-413-9791 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-413-9791 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 5305-00-413-9791 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-413-9791 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 5305-00-413-9791 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Wed, May 1, 1974

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