PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1201-550-Z3CStud,turnlock Fastener

Southco Inc · NSN 5325-00-449-3165 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-449-3165 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-449-3165. Primary manufacturer part number: 1201-550-Z3C.
Features
  • Stud,turnlock Fastener — FSC 5325
  • Drive Type: SLOTTED
  • Stud Shank Major Diameter: 0.312 INCHES NOMINAL IN
  • Grip Length: 0.800 INCHES NOMINAL IN
  • Surface Treatment: CADMIUM OVERALL
  • Diameter: 0.562 INCHES NOMINAL IN
  • Turnlock Stud Head Style: FILLISTER
  • Material: STEEL OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-449-3165, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Southco Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-449-3165
Primary Part Number1201-550-Z3C
Item NameStud,turnlock Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSouthco Inc
StatusACTIVE
Drive TypeSLOTTED
Stud Shank Major Diameter0.312 INCHES NOMINAL IN
Grip Length0.800 INCHES NOMINAL IN
Surface TreatmentCADMIUM OVERALL
Diameter0.562 INCHES NOMINAL IN
Turnlock Stud Head StyleFILLISTER
MaterialSTEEL OVERALL
Turnlock Stud Shank StyleSTUD SHANK
Material Accommodated Thickness0.491 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
Shank Neck Length0.610 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2805-00-386-34296107385 INTERCHANGEABLE
Valve,poppet,engine
General Motors Llc Dba General Motors Llc
4320-01-142-9078A550 INTERCHANGEABLE
Impeller,pump,centrifugal
Circor Naval Solutions Llc Dba Warren Pumps
5325-01-551-4283A550 INTERCHANGEABLE
Eyelet,metallic
Edwin B. Stimpson Company, Inc. Dba Stimpson
Cross-Reference Index
Part NumberManufacturer
A5-50 Southco Inc (USA)
1201-550-Z3C PRIMARY Southco Inc (USA)
Related Parts
2805-00-386-3429INTERCHANGEABLE
VALVE,POPPET,ENGINE
6107385
4320-01-142-9078INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
A550
5325-01-551-4283INTERCHANGEABLE
EYELET,METALLIC
A550

Frequently Asked Questions

What is NSN 5325-00-449-3165?

NSN 5325-00-449-3165 is a Stud,turnlock Fastener, manufactured by Southco Inc, classified under FSC 5325 (No Item Name Available). Status: active.

What are the part numbers for NSN 5325-00-449-3165?

NSN 5325-00-449-3165 has 2 cross-referenced part numbers: A5-50 (Southco Inc), 1201-550-Z3C (Southco Inc).

What NSN replaces 5325-00-449-3165?

There are 3 known substitutes for 5325-00-449-3165: 2805-00-386-3429, 4320-01-142-9078, 5325-01-551-4283. Verify interchangeability with system specifications before substitution.

What are the specifications of 1201-550-Z3C?

Key specifications for 1201-550-Z3C: Drive Type: SLOTTED; Stud Shank Major Diameter: 0.312 INCHES NOMINAL IN; Grip Length: 0.800 INCHES NOMINAL IN; Surface Treatment: CADMIUM OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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