PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1206-550-Z3CStud,turnlock Fastener

Southco Inc · NSN 5325-00-449-3126 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-449-3126 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-449-3126. Primary manufacturer part number: 1206-550-Z3C.
Features
  • Stud,turnlock Fastener — FSC 5325
  • Stud Shank Major Diameter: 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
  • Turnlock Stud Head Style: FLAT COUNTERSUNK
  • Material: STEEL OVERALL
  • Grip Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Diameter: 0.562 INCHES NOMINAL IN
  • Material Accommodated Thickness: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
  • Surface Treatment: CADMIUM OVERALL
Applications
  • Applications requiring Steel Overall construction
General Description

The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-449-3126, 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
NSN5325-00-449-3126
Primary Part Number1206-550-Z3C
Item NameStud,turnlock Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSouthco Inc
StatusACTIVE
Stud Shank Major Diameter0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
Turnlock Stud Head StyleFLAT COUNTERSUNK
MaterialSTEEL OVERALL
Grip Length0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Diameter0.562 INCHES NOMINAL IN
Material Accommodated Thickness0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
Surface TreatmentCADMIUM OVERALL
Shank Neck Length0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN
Drive TypeSLOTTED
Turnlock Stud Shank StyleSTUD SHANK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3990-00-601-83134904X2-60 INTERCHANGEABLE
Brake,floor,wheeled Equipment
Lockheed Martin Corporation Div Rotary and Mission Systems
6645-01-184-5060 INTERCHANGEABLE
Timer,stop
2320-01-480-8109F550 INTERCHANGEABLE
Truck,stake
Grande Ford Truck Sales Inc Dba Grande Truck Center
Cross-Reference Index
Part NumberManufacturer
1206-550-Z3C PRIMARY Southco Inc (USA)
F5-50 Southco Inc (USA)
Related Parts
3990-00-601-8313INTERCHANGEABLE
BRAKE,FLOOR,WHEELED EQUIPMENT
4904X2-60
6645-01-184-5060INTERCHANGEABLE
TIMER,STOP
2320-01-480-8109INTERCHANGEABLE
TRUCK,STAKE
F550

Frequently Asked Questions

What is NSN 5325-00-449-3126?

NSN 5325-00-449-3126 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 5325-00-449-3126?

NSN 5325-00-449-3126 has 2 cross-referenced part numbers: 1206-550-Z3C (Southco Inc), F5-50 (Southco Inc).

What NSN replaces 5325-00-449-3126?

There are 3 known substitutes for 5325-00-449-3126: 3990-00-601-8313, 6645-01-184-5060, 2320-01-480-8109. Verify interchangeability with system specifications before substitution.

What are the specifications of 1206-550-Z3C?

Key specifications for 1206-550-Z3C: Stud Shank Major Diameter: 0.307 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Turnlock Stud Head Style: FLAT COUNTERSUNK; Material: STEEL OVERALL; Grip Length: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN. 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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