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5305-01-049-7799

Close Tolerance Screw

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Official Item Classification

Name
Close Tolerance Screw
(NSN) National Stock Number
5305-01-049-7799
(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
10/24/1977 (48 years ago)

3a thread class, right-hand thread direction, 1.660 inches minimum and 1.690 inches maximum fastener length, flat countersunk head style, 0.400 inches minimum and 0.450 inches maximum thread length

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.400 inches minimum and 0.450 inches maximum

Fastener Length

1.660 inches minimum and 1.690 inches maximum

Head Style

flat countersunk

Head Diameter

0.455 inches minimum and 0.510 inches maximum

Grip Diameter

0.2490 inches minimum and 0.2495 inches maximum

Internal Drive Style

cross recess type 1

Nominal Thread Diameter

0.250 inches

Grip Length

1.240 inches minimum and 1.260 inches maximum

Thread Quantity Per Inch

28

Countersink Angle

100.0 degrees nominal

Surface Finish

32.0 microinches grip

Surface Finish

32.0 microinches threads

Material

iron alloy 660 overall

Surface Treatment

passivate overall

Thread Series Designator

unjf

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
BACB30LR4U20 Close Tolerance Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-049-7799?
The FSCG of the NSN 5305-01-049-7799 is 5305
Does the NSN 5305-01-049-7799 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-049-7799 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 5305-01-049-7799 contain precious materials?
Precious metal content is unknown
Does NSN 5305-01-049-7799 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 5305-01-049-7799 was assigned to the Federal Catalog?
It was assigned 48 years ago, on Mon, Oct 24, 1977