PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A65-40Stud,turnlock Fastener

Southco Inc · NSN 5325-00-449-3176 · FSC 5325 · No Item Name Available
Verified by PartsTable
NSN 5325-00-449-3176 — this item is cataloged by the U.S. Government under National Stock Number 5325-00-449-3176. Primary manufacturer part number: A65-40.
Features
  • Stud,turnlock Fastener — FSC 5325
  • Surface Treatment: CADMIUM OVERALL
  • Shank Neck Length: 0.530 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Material Accommodated Thickness: 0.391 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
  • Turnlock Stud Shank Style: STUD SHANK
  • Stud Shank Major Diameter: 0.406 INCHES NOMINAL IN
  • Drive Type: SLOTTED
Applications
  • Applications requiring Steel Overall construction
General Description

The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-449-3176, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5325-00-449-3176
Primary Part NumberA65-40
Item NameStud,turnlock Fastener
FSC / FSG5325 / 53 — No Item Name Available
ManufacturerSouthco Inc
StatusACTIVE
Surface TreatmentCADMIUM OVERALL
Shank Neck Length0.530 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Material Accommodated Thickness0.391 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN
Turnlock Stud Shank StyleSTUD SHANK
Stud Shank Major Diameter0.406 INCHES NOMINAL IN
Drive TypeSLOTTED
Diameter0.687 INCHES NOMINAL IN
Turnlock Stud Head StyleFILLISTER
Grip Length0.760 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-359-5482A6540 INTERCHANGEABLE
Nut
Am General Llc
6220-00-520-260046-0992-1 INTERCHANGEABLE
Actuator Assembly,landing Light
Grimes Aerospace Company
Cross-Reference Index
Part NumberManufacturer
76292 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
76292 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
A6 1-2 40 Southco Inc (USA)
A65-40 PRIMARY Southco Inc (USA)
Related Parts
5310-00-359-5482INTERCHANGEABLE
NUT
A6540
6220-00-520-2600INTERCHANGEABLE
ACTUATOR ASSEMBLY,LANDING LIGHT
46-0992-1

Frequently Asked Questions

What is NSN 5325-00-449-3176?

NSN 5325-00-449-3176 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 5325-00-449-3176?

NSN 5325-00-449-3176 has 4 cross-referenced part numbers: 76292 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 76292 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.), A6 1-2 40 (Southco Inc), A65-40 (Southco Inc).

What NSN replaces 5325-00-449-3176?

There are 2 known substitutes for 5325-00-449-3176: 5310-00-359-5482, 6220-00-520-2600. Verify interchangeability with system specifications before substitution.

What are the specifications of A65-40?

Key specifications for A65-40: Surface Treatment: CADMIUM OVERALL; Shank Neck Length: 0.530 INCHES NOMINAL IN; Material: STEEL OVERALL; Material Accommodated Thickness: 0.391 INCHES MINIMUM AND 0.400 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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