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5305-00-021-3801

Find complete technical information, availability, and procurement data for: 5305-00-021-3801

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5305-00-021-3801
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-021-3801
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.

1.250 inches maximum thread length, 1.250 inches nominal fastener length, hexagon head style, 2a thread class, 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 maximum
Fastener Length
1.250 inches nominal
Head Style
hexagon
Head Height
0.302 inches minimum and 0.323 inches maximum
Width Between Flats
0.736 inches minimum and 0.750 inches maximum
Nominal Thread Diameter
0.500 inches
Thread Quantity Per Inch
13
Minimum Tensile Strength
80000 pounds per square inch
Material
steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 overall
Material Document And Classification
66 fed std all material responses overall
Surface Treatment
passivate overall
Surface Treatment Document And Classification
qq-p-35 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Below is a list of NSNs that have been officially superseded by this NSN: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
5305-00-107-5321 No Name Available 05/01/1992
5306-00-227-0913 No Name Available 06/01/1984
5305-00-660-2705 No Name Available 09/01/1982
5305-00-726-9603 No Name Available 10/01/1982
5306-01-025-6313 No Name Available 01/01/1989

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
145-4510931-53 Hexagon Head Cap Screw
213801 Hexagon Head Cap Screw
316-2784 Hexagon Head Cap Screw
501-7298327 ITEM NO 64 Hexagon Head Cap Screw
501-7368091 ITEM NO 30 Hexagon Head Cap Screw
501-7368092 ITEM NO 27 Hexagon Head Cap Screw
5305000213801 Hexagon Head Cap Screw
5305PL0125757 Hexagon Head Cap Screw
60-01-4553 Hexagon Head Cap Screw
701-7063815 SH 1 PC Hexagon Head Cap Screw
701-7063818 SH 1 PC 4 Hexagon Head Cap Screw
AMD-1403 ITEM 65 Hexagon Head Cap Screw
D301080 FIND NO 53 Hexagon Head Cap Screw
D301087 FIND NO 80 Hexagon Head Cap Screw
D301088 FIND NO 53 Hexagon Head Cap Screw
D31088 FIND NO 53 Hexagon Head Cap Screw
E104555 FIND 75 Hexagon Head Cap Screw
E108186 PART NO 239 Hexagon Head Cap Screw
E108186 PART NO 266 Hexagon Head Cap Screw
MS35307-411 Hexagon Head Cap Screw
NASM35307-411 Hexagon Head Cap Screw
PWA500476 ITEM 31 Hexagon Head Cap Screw
WG107186 Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-021-3801?
The FSCG of the NSN 5305-00-021-3801 is 5305
Does the NSN 5305-00-021-3801 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-021-3801 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 5305-00-021-3801 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-021-3801 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 5305-00-021-3801 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

Professional Distribution

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