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5305-01-191-4591

Hexagon Head Cap Screw

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Official Item Classification

Name
Hexagon Head Cap Screw
(NSN) National Stock Number
5305-01-191-4591
(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
10/08/1984 (42 years ago)

2.220 inches minimum and 2.270 inches maximum fastener length, right-hand thread direction, 1.000 inches nominal thread length, 2a thread class, hexagon head style

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

1.000 inches nominal

Fastener Length

2.220 inches minimum and 2.270 inches maximum

Head Style

hexagon

Head Height

0.226 inches minimum and 0.243 inches maximum

Width Between Flats

0.551 inches minimum and 0.562 inches maximum

Nominal Thread Diameter

0.375 inches

Thread Quantity Per Inch

16

Material

steel corrosion resisting 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
1C6168P13 Hexagon Head Cap Screw
MS3507-367 Hexagon Head Cap Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-191-4591?
The FSCG of the NSN 5305-01-191-4591 is 5305
Does the NSN 5305-01-191-4591 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-191-4591 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 5305-01-191-4591 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-191-4591 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 5305-01-191-4591 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Mon, Oct 8, 1984