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5305-01-251-2914

Find complete technical information, availability, and procurement data for: 5305-01-251-2914

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5305-01-251-2914
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-251-2914
Item Name Code
18257
Assigment Date
03/16/1987 (39 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.

1.250 inches minimum and 1.750 inches maximum thread length, hexagon head style, 2a thread class, 4.906 inches minimum and 5.000 inches maximum fastener length, right-hand thread direction

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 1.750 inches maximum
Fastener Length
4.906 inches minimum and 5.000 inches maximum
Head Style
hexagon
Head Height
0.378 inches minimum and 0.403 inches maximum
Width Between Flats
0.922 inches minimum and 0.938 inches maximum
Shank Unthreaded Hole Diameter
0.140 inches nominal first hole
Nominal Thread Diameter
0.625 inches
Thread Quantity Per Inch
10
Minimum Tensile Strength
150000 pounds per square inch
Hardness Rating
32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center
4.718 inches minimum and 4.812 inches maximum first hole
Special Features
finish overall
Material
steel comp 1013 or steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019 or steel comp 1020 or steel comp 1021 or steel comp 1022 or steel comp 1023 or steel comp 1524 or steel comp 1025 or steel comp 1026 or steel comp 1527 or steel comp 1029 or steel comp 1030 or steel comp 1033 or steel comp 1034 or steel comp 1035 or steel comp 1037 or steel comp 1038 or steel comp 1039 or steel comp 1040 or steel comp 1541 overall
Surface Treatment
phosphate zinc overall
Surface Treatment Document And Classification
dod-p-16232 mil spec single treatment response overall
Thread Series Designator
unf

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
MS51108-151 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-251-2914?
The FSCG of the NSN 5305-01-251-2914 is 5305
Does the NSN 5305-01-251-2914 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-251-2914 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 5305-01-251-2914 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-251-2914 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 5305-01-251-2914 was assigned to the Federal Catalog?
It was assigned 39 years ago, on Mon, Mar 16, 1987

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