12S1-21-1AA

View detailed technical data, stock status, and sourcing information for: 12S1-21-1AA
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5325 Fastening Devices

National Stock Number

5325-00-249-5986

Item Name Code

18484

Assigment Date

11/10/1969 (56 years ago)

A stud, turnlock fastener over which may be assembled an eyelet, turnlock fastener. Stud(s) without cam slots or cam lead threads are provided with a crosspin or eared nut for locking with the mating receptacle, turnlock fastener. May be spring loaded. For like items having a threaded fastener, see screw assembly, panel or screw, panel fastener.

spring securing device type, 0.579 inches nominal distance from engaging member to largest bearing surface of head, 0.294 inches minimum and 0.306 inches maximum diameter, fillister turnlock stud head style, stud assembly stud assembly style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Diameter: 0.294 inches minimum and 0.306 inches maximum
Securing Device Type: spring
Turnlock Stud Head Style: fillister
Stud Assembly Style: stud assembly
Distance From Engaging Member To Largest Bearing Surface Of Head: 0.579 inches nominal
Eyelet Outside Diameter: 0.344 inches minimum and 0.364 inches maximum
Stud Diameter: 0.122 inches minimum and 0.128 inches maximum
Material Accommodated Thickness: 0.275 inches minimum and 0.289 inches maximum
Drive Type: slotted
Material: steel comp 4037 stud
Material Document And Classification: qq-s-624 fed spec single material response stud
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416a,class 2,type 2 fed spec single treatment response overall

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
12S1-21-1AA	Turnlock Fastener Stud Assembly
STSEC007AS21	Turnlock Fastener Stud Assembly

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5325-00-249-5986?

The FSCG of the NSN 5325-00-249-5986 is 5325

Does the NSN 5325-00-249-5986 have a Schedule B code assigned?

Yes, the Schedule B code is 9607190000

Does NSN 5325-00-249-5986 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 5325-00-249-5986 contain precious materials?

Item does not contain precious metal.

Does NSN 5325-00-249-5986 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 5325-00-249-5986 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Nov 10, 1969