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5305-00-561-8149

Find complete technical information, availability, and procurement data for: 5305-00-561-8149

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5305-00-561-8149
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-561-8149
Item Name Code
18257
Assigment Date
01/01/1963 (63 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.

3.500 inches nominal fastener length, hexagon head style, 2a thread class, right-hand thread direction, 2.500 inches minimum 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
2a
Thread Direction
right-hand
Thread Length
2.500 inches minimum
Fastener Length
3.500 inches nominal
Head Style
hexagon
Head Height
0.250 inches nominal
Width Between Flats
0.544 inches minimum
Shank Unthreaded Hole Diameter
0.106 inches nominal first hole
Nominal Thread Diameter
0.375 inches
Thread Quantity Per Inch
16
Distance From Head Largest Bearing Surface To Shank Hole Center
3.250 inches nominal first hole
Material
steel overall
Surface Treatment
zinc overall
Surface Treatment Document And Classification
qq-z-325,ty 2,cl 3 fed spec single treatment response overall
Thread Series Designator
unc

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
8519694 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-561-8149?
The FSCG of the NSN 5305-00-561-8149 is 5305
Does the NSN 5305-00-561-8149 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-561-8149 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 5305-00-561-8149 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-561-8149 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 5305-00-561-8149 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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