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MS51100-1 Hexagon Head Cap Screw

5305-00-825-4113

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Official Item Classification

Name
Hexagon Head Cap Screw
Part Number
MS51100-1
(NSN) National Stock Number
5305-00-825-4113
(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
01/01/1962 (64 years ago)

0.250 inches minimum and 0.375 inches maximum thread length, hexagon head style, 2a thread class, 0.375 inches nominal fastener length, right-hand thread direction

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

0.250 inches minimum and 0.375 inches maximum

Fastener Length

0.375 inches nominal

Head Style

hexagon

Head Height

0.150 inches minimum and 0.163 inches maximum

Width Between Flats

0.428 inches minimum and 0.438 inches maximum

Hole Diameter

0.062 inches nominal

Nominal Thread Diameter

0.250 inches

Hole Quantity

1

Hole Type

drilled

Thread Quantity Per Inch

28

Hole Configuration Style

hexagon flats

Material

steel comp 416 or steel comp 430 or steel comp 410 overall

Material Document And Classification

qq-s-763 fed spec 1st material response or qq-s-763 fed spec 2nd material response or qq-w-423 fed spec 2nd material response or qq-w-423 fed spec 3rd material response overall

Surface Treatment

passivate overall

Thread Series Designator

unf

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
MS51100-1 Hexagon Head Cap Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-00-825-4113?
The FSCG of the NSN 5305-00-825-4113 is 5305
Does the NSN 5305-00-825-4113 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-825-4113 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 5305-00-825-4113 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-00-825-4113 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 5305-00-825-4113 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962