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5305-01-221-3157

Hexagon Head Cap Screw

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Official Item Classification

Name
Hexagon Head Cap Screw
(NSN) National Stock Number
5305-01-221-3157
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
18257
(FIIG) Federal Item Identification Guide
A003B0
Date
11/27/1985 (40 years ago)

2a thread class, 0.750 inches nominal thread length, hexagon head style, 1.500 inches nominal fastener length, right-hand thread direction

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

0.750 inches nominal

Fastener Length

1.500 inches nominal

Head Style

hexagon

Head Height

0.150 inches minimum and 0.188 inches maximum

Width Between Flats

0.425 inches minimum and 0.438 inches maximum

Nominal Thread Diameter

0.250 inches

Thread Quantity Per Inch

20

Minimum Tensile Strength

190000 pounds per square inch

Material

steel overall

Thread Series Designator

unc

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0018257

Related Hardware Products

Part Number Description
A604 Hexagon Head Cap Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-221-3157?
The FSCG of the NSN 5305-01-221-3157 is 5305
Does the NSN 5305-01-221-3157 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-221-3157 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 5305-01-221-3157 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-221-3157 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 5305-01-221-3157 was assigned to the Federal Catalog?
It was assigned 40 years ago, on Wed, Nov 27, 1985