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Worldwide distributor of NSN parts and consumables located in the USA.

Locked In Stud

Model / MPN: SFA121-12AA16.5A | NSN: 5307-00-688-2026
ITAR Registered seal

A headless fastener externally threaded on both ends with each threaded portion of one but not necessarily the same diameter. It is designed to be locked in place by either a ring, lock, serrated or a ring, lock, keyed.

Product Details
NATO Stock Number
5307-00-688-2026
Sold in multiples of
DEMIL
NO
Thread Class
2a stud thread
Thread Class
3a nut thread
Thread Length
0.750 inches stud thread
Thread Length
0.812 inches nut thread
Overall Length
1.780 inches
Distance From Serrated Portion To Nut End
1.030 inches
Distance From Serrated Portion To Stud End
0.750 inches
Distance From Serrated Portion To End Of Stud Thread
0.230 inches
Distance From Cotter Pin Hole Centerline To Nut End
0.172 inches first hole
Cotter Pin Hole Diameter
0.106 inches first hole
Thready Qty Per Inch (tpi)
14 stud thread
Thready Qty Per Inch (tpi)
24 nut thread
Thread Size
0.375 inches nut thread
Thread Size
0.438 inches stud thread
Material
Aluminum alloy 2024
Material Specification
Qq-a-268 federal specification single material response
Style Designator
Locked in
Thread Series Designator
Unc stud thread
Thread Series Designator
Unf nut thread
SFA121 Series Parts

Pricing and Availability

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SFA121-12AA16.5A Cross Reference