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5305-00-253-0472

Hexagon Head Cap Screw

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Official Item Classification

Name
Hexagon Head Cap Screw
(NSN) National Stock Number
5305-00-253-0472
(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
06/18/1973 (53 years ago)

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

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

1.250 inches minimum

Fastener Length

1.625 inches minimum and 1.750 inches maximum

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

Hole Diameter

0.094 inches nominal

Nominal Thread Diameter

0.500 inches

Hole Quantity

1

Hole Type

drilled

Thread Quantity Per Inch

20

Minimum Tensile Strength

70000 pounds per square inch

Hardness Rating

235.0 brinell standard maximum overall

Minimum Yield Strength

40000 pounds per square inch

Hole Configuration Style

hexagon flats

Material

steel comp 403 or steel comp 405 or steel comp 410 or steel comp 414 or steel comp 416 or steel comp 416se or steel comp 420 or steel comp 430 or steel comp 430f or steel comp 430fse or steel comp 431 or steel comp 440a or steel comp 440b or steel comp 440c or steel comp 446 overall

Surface Treatment

passivate overall

Surface Treatment Document And Classification

qq-p-35 fed spec single treatment response overall

Thread Series Designator

unf

Nondefinitive Spec/Std Data

2 type and 10p style

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

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
655257 Hexagon Head Cap Screw
MS51100-115 Hexagon Head Cap Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-00-253-0472?
The FSCG of the NSN 5305-00-253-0472 is 5305
Does the NSN 5305-00-253-0472 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-253-0472 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 5305-00-253-0472 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-253-0472 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 5305-00-253-0472 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Mon, Jun 18, 1973