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5305-00-548-4910

Close Tolerance Screw

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Official Item Classification

Name
Close Tolerance Screw
(NSN) National Stock Number
5305-00-548-4910
(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
10/15/1974 (52 years ago)

0.400 inches minimum and 0.466 inches maximum thread length, 3a thread class, 1.222 inches minimum and 1.268 inches maximum fastener length, right-hand thread direction, flat countersunk head style

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.400 inches minimum and 0.466 inches maximum

Fastener Length

1.222 inches minimum and 1.268 inches maximum

Head Style

flat countersunk

Head Diameter

0.452 inches minimum and 0.510 inches maximum

Grip Diameter

0.2490 inches minimum and 0.2495 inches maximum

Internal Drive Style

offset cruciform (torque set)

Nominal Thread Diameter

0.250 inches

Grip Length

0.802 inches minimum and 0.822 inches maximum

Thread Quantity Per Inch

28

Countersink Angle

99.0 degrees minimum and 101.0 degrees maximum

Surface Finish

16.0 microinches threads

Surface Finish

63.0 microinches grip

Material

titanium alloy uns r54520 overall

Material Document And Classification

nas621,comp 6al-4v assn std single material response overall

Thread Series Designator

unf

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

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Frequently Asked Questions

What is the FSCG of the NSN 5305-00-548-4910?
The FSCG of the NSN 5305-00-548-4910 is 5305
Does the NSN 5305-00-548-4910 have a Schedule B code assigned?
Yes, the Schedule B code is 8109900000
Does NSN 5305-00-548-4910 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 5305-00-548-4910 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-548-4910 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 5305-00-548-4910 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Tue, Oct 15, 1974