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WS256-4-7-20A Locked in Stud

5307-01-010-6996

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Official Item Classification

Name
Locked in Stud
Part Number
WS256-4-7-20A
(NSN) National Stock Number
5307-01-010-6996
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5307 Studs
(INC) Item Name Code
16012
(FIIG) Federal Item Identification Guide
A051A0
Date
10/05/1975 (50 years ago)

0.040 inches minimum and 0.050 inches maximum stud thread thread length, right-hand stud thread thread direction, right-hand nut thread thread direction, 3a nut thread thread class, 3a stud 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

0.040 inches minimum and 0.050 inches maximum stud thread

Thread Length

0.552 inches minimum and 0.572 inches maximum nut thread

Locking Feature

ring, lock keyed

Shoulder Length

0.040 inches minimum and 0.050 inches maximum

Overall Length

1.812 inches nominal

Distance From Shoulder Portion To Nut End

1.235 inches minimum and 1.265 inches maximum

Thread Quantity Per Inch

16 stud thread

Thread Quantity Per Inch

24 nut thread

Nominal Thread Size

0.312 inches nut thread

Nominal Thread Size

0.375 inches stud thread

Surface Finish

125.0 microinches overall

Part Name Assigned By Controlling Agency

stud,locked in

Material

steel comp 4340 and steel comp e4340

Material Document And Classification

mil-s-5000 mil spec all material responses

Surface Treatment

passivate overall

Surface Treatment Document And Classification

mil-s-5002 mil spec single treatment response overall

Style Designator

locked in

Thread Series Designator

unc stud thread

Thread Series Designator

unf nut thread

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

0016012

Related Hardware Products

Part Number Description
502AS3415-02 Locked in Stud
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WS256-4-7-20A Locked in Stud

Frequently Asked Questions

What is the FSCG of the NSN 5307-01-010-6996?
The FSCG of the NSN 5307-01-010-6996 is 5307
Does NSN 5307-01-010-6996 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 5307-01-010-6996 contain precious materials?
Item does not contain precious metal.
Does NSN 5307-01-010-6996 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 5307-01-010-6996 was assigned to the Federal Catalog?
It was assigned 50 years ago, on Sun, Oct 5, 1975