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

Locked In Stud

Model / MPN: S256-3-916 | NSN: 5307-00-054-5282
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
5307-00-054-5282
Sold in multiples of
100 EA
DEMIL
NO
Thread Class
3a nut thread
Thread Class
3a stud thread
Thread Direction
Right-hand nut thread
Thread Direction
Right-hand stud thread
Thread Length
0.560 inches nut thread
Thread Length
0.393 inches stud thread
Locking Feature
Ring, lock keyed
Shoulder Diameter
Between 0.306 inches and 0.311 inches
Shoulder Length
Between 0.045 inches and 0.050 inches
Overall Length
Between 1.423 inches and 1.453 inches
Distance From Shoulder Portion To Nut End
Between 0.995 inches and 1.005 inches
Thready Qty Per Inch (tpi)
16 stud thread
Thready Qty Per Inch (tpi)
24 nut thread
Hardness Rating
Between 26.0 rockwell c and 32.0 rockwell c
Thread Size
0.312 inches nut thread
Thread Size
0.375 inches stud thread
Material
Steel comp 4130
Material Specification
Sae assn standard single material response
Surface Treatment
Cadmium
Surface Treatment Specification
Qq-p-416, type 1, cl 3 federal specification single treatment response
Style Designator
Locked in
Thread Series Designator
Unc stud thread
Thread Series Designator
Unf nut thread

Pricing and Availability

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S256-3-916 Cross Reference
  • B8344-2