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57991-507-7 Shouldered Stud

5307-00-126-0523

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Official Item Classification

Name
Shouldered Stud
Part Number
57991-507-7
(NSN) National Stock Number
5307-00-126-0523
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5307 Studs
(INC) Item Name Code
15946
(FIIG) Federal Item Identification Guide
A051A0
Date
11/22/1968 (57 years ago)

0.272 inches nominal stud thread thread length, right-hand stud thread thread direction, 3a stud thread thread class, right-hand nut thread thread direction, 3a nut thread thread class

Specs & Compatibility

Thread Class

3a nut thread

Thread Class

3a stud thread

Thread Direction

right-hand nut thread

Thread Direction

right-hand stud thread

Thread Length

0.272 inches nominal stud thread

Thread Length

0.500 inches minimum and 0.620 inches maximum nut thread

Shoulder Length

0.050 inches nominal

Overall Length

2.370 inches nominal

Nut End Shank Length

0.088 inches nominal

Distance Across Flats

0.302 inches minimum and 0.312 inches maximum

Thread Quantity Per Inch

32 nut thread

Thread Quantity Per Inch

32 stud thread

Hardness Rating

320.0 vickers or firth diamond pyramid nominal

Nominal Thread Size

0.164 inches nut thread

Nominal Thread Size

0.164 inches stud thread

Stud End Shank Length

1.340 inches nominal

Stud End Shank Diameter

0.164 inches nominal

Surface Finish

125.0 microinches overall

Nut End Shank Diameter

0.120 inches minimum and 0.130 inches maximum

Material

steel

Nuclear Hardness Critical Feature

hardened

Style Designator

shouldered

Thread Series Designator

unjc nut thread

Thread Series Designator

unjc stud thread

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
H

The item is specifically designed to be or selected as being nuclear hard (i.e., it will continue to perform its designed function in an environment created by a nuclear explosion). The item does not have other critical features.

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

0015946

Related Hardware Products

Part Number Description
57991-507-7 Shouldered Stud

Frequently Asked Questions

What is the FSCG of the NSN 5307-00-126-0523?
The FSCG of the NSN 5307-00-126-0523 is 5307
Does the NSN 5307-00-126-0523 have a Schedule B code assigned?
Yes, the Schedule B code is 7318155000
Does NSN 5307-00-126-0523 require demilitarization?
Usml items - demil required. Security classified items. (note 2).
Does NSN 5307-00-126-0523 contain precious materials?
Precious metal content is unknown
Does NSN 5307-00-126-0523 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 5307-00-126-0523 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Fri, Nov 22, 1968