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NAS334CFA7 Close Tolerance Screw

5305-00-810-5205

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Official Item Classification

Name
Close Tolerance Screw
Part Number
NAS334CFA7
(NSN) National Stock Number
5305-00-810-5205
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
29294
(FIIG) Federal Item Identification Guide
A003B0
Date
01/01/1962 (64 years ago)

0.891 inches minimum and 0.938 inches maximum fastener length, flat countersunk head style, 0.398 inches minimum thread length, right-hand thread direction, 3a thread class

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.398 inches minimum

Fastener Length

0.891 inches minimum and 0.938 inches maximum

Head Style

flat countersunk

Head Diameter

0.497 inches minimum and 0.507 inches maximum

Grip Diameter

0.2483 inches minimum and 0.2492 inches maximum

Internal Drive Style

cross recess type 1

Nominal Thread Diameter

0.250 inches

Grip Length

0.438 inches nominal

Thread Quantity Per Inch

28

Minimum Tensile Strength

160000 pounds per square inch

Hardness Rating

36.0 rockwell c minimum and 40.0 rockwell c maximum overall

Countersink Angle

100.0 degrees nominal

Surface Finish

32.0 microinches grip

Material

steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall

Material Document And Classification

mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response overall

Surface Treatment

cadmium and chromate overall

Surface Treatment Document And Classification

qq-p-416 ty 2 cl 3 fed spec single treatment response overall

Thread Series Designator

unf

Specification/Standard Data

80205-nas334 professional/industrial association standard

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

0029294

Related Hardware Products

Part Number Description
NAS334CFA7 Close Tolerance Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-00-810-5205?
The FSCG of the NSN 5305-00-810-5205 is 5305
Does the NSN 5305-00-810-5205 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-810-5205 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 5305-00-810-5205 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-810-5205 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 5305-00-810-5205 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962