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5305-00-022-0493

Find complete technical information, availability, and procurement data for: 5305-00-022-0493

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5305-00-022-0493
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-022-0493
Item Name Code
18257
Assigment Date
01/01/1963 (63 years ago)

An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. Excludes:bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.

right-hand thread direction, 0.718 inches minimum and 0.782 inches maximum fastener length, hexagon head style, 2a thread class, 0.607 inches minimum and 0.718 inches maximum 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
0.607 inches minimum and 0.718 inches maximum
Fastener Length
0.718 inches minimum and 0.782 inches maximum
Head Style
hexagon
Head Height
0.188 inches minimum and 0.198 inches maximum
Width Between Flats
0.489 inches minimum and 0.500 inches maximum
Locking Feature
distortions bearing surface of head
Nominal Thread Diameter
0.312 inches
Features Provided
finished head
Thread Quantity Per Inch
18
Minimum Tensile Strength
95000 pounds per square inch
Hardness Rating
96.0 rockwell b minimum and 104.0 rockwell b maximum overall
Minimum Yield Strength
85000 pounds per square inch
Material
steel comp 1035 overall
Material Document And Classification
qq-s-634 fed spec single material response overall
Surface Treatment
cadmium or zinc overall
Surface Treatment Document And Classification
qq-p-416,ty 1 cl 2 fed spec 1st treatment response or qq-z-325,ty 1 cl2 fed spec 2nd 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
220493 Hexagon Head Cap Screw
MS35763-817 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-022-0493?
The FSCG of the NSN 5305-00-022-0493 is 5305
Does the NSN 5305-00-022-0493 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-022-0493 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 5305-00-022-0493 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-022-0493 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 5305-00-022-0493 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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