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

Shouldered And Stepped Stud

Model / MPN: KB1224A | NSN: 5307-01-327-5188
ITAR Registered seal

A headless fastener not exceeding 12 inches (304.8 mm) in length, threaded externally on both ends, on which the diameter of one threaded section is greater than the other. All or part of the unthreaded section is greater than the major diameter of the largest threaded section. It may be thread relieved. Excludes items with tapered threads. See also stud, locked in.

Product Details
NATO Stock Number
5307-01-327-5188
Sold in multiples of
1 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
0.250 inches stud thread
Thread Length
0.188 inches nut thread
Shoulder Length
0.125 inches
Overall Length
0.563 inches
Distance Across Flats
0.250 inches
Thready Qty Per Inch (tpi)
32 stud thread
Thready Qty Per Inch (tpi)
40 nut thread
Thread Size
0.112 inches nut thread
Thread Size
0.138 inches stud thread
Criticality Code Justification
Zzzy
Material
Aluminum
Surface Treatment
Chromate
Special Test Features
Special quality control testing
Surface Treatment Specification
Mil-c-5541 military specification single treatment response
Style Designator
Shouldered and stepped
Test Data Document
81349-mil-p-23199 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Thread Series Designator
Unc nut thread
Thread Series Designator
Unc stud thread
Reference Number Differentiating Characteristics
As differentiated by material which must conform to ships parts control center special quality control provisions
1224A Series Parts

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KB1224A Cross Reference
  • LL-HX6-8673
  • 4727.A-6