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5305-01-591-0381

Close Tolerance Screw

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Official Item Classification

Name
Close Tolerance Screw
(NSN) National Stock Number
5305-01-591-0381
(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
01/07/2011 (15 years ago)

1.329 inches minimum and 1.359 inches maximum fastener length, 0.469 inches nominal thread length, right-hand thread direction, 3a thread class, fillister countersunk head style

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.469 inches nominal

Fastener Length

1.329 inches minimum and 1.359 inches maximum

Head Style

fillister countersunk

Head Diameter

0.390 inches minimum and 0.395 inches maximum

Head Height

0.015 inches maximum

Grip Diameter

0.249 inches minimum and 0.250 inches maximum

Point Length

0.045 inches nominal

Point Style

flat

Internal Drive Style

high-torque

Nominal Thread Diameter

0.250 inches

Grip Length

0.875 inches nominal

Thread Quantity Per Inch

28

Countersink Angle

99.0 degrees minimum and 101.0 degrees maximum

Point Chamfer Angle

45.0 degrees nominal

Part Name Assigned By Controlling Agency

screw-close tolerance, 100 deg countersunk, reduced head, hi-torque, non-magnetic cres (125 ksi fsu)

Special Features

head has a 1.40 deg radius dome

Material

nickel alloy 718 overall

Material Document And Classification

ams 5662 assn std single material response overall

Surface Treatment

passivate overall

Surface Treatment Document And Classification

ams 2700 assn std single treatment response overall

Thread Series Designator

unjf

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

0029294

Related Hardware Products

Part Number Description
11923-4-14 Close Tolerance Screw
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ST3M557-4-14 Close Tolerance Screw
WC4027-4-14 Close Tolerance Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-591-0381?
The FSCG of the NSN 5305-01-591-0381 is 5305
Does the NSN 5305-01-591-0381 have a Schedule B code assigned?
Yes, the Schedule B code is 7508900000
Does NSN 5305-01-591-0381 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 5305-01-591-0381 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-591-0381 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 5305-01-591-0381 was assigned to the Federal Catalog?
It was assigned 15 years ago, on Fri, Jan 7, 2011