The Stud,turnlock Fastener, cataloged under National Stock Number 5325-01-099-3689, is classified within Federal Supply Class 5325 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Howmet Global Fastening Systems Inc. Div Tridair Products. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-099-3689 |
| Primary Part Number | CA2021-4 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — No Item Name Available |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Tridair Products |
| Status | ACTIVE |
| Extension Length | 0.156 INCHES NOMINAL IN |
| Grip Length | 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Diameter | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Drive Type | SLOTTED OR SOCKET |
| Stud Thread Size and Series/type Designator | 0.112-40 UNIFIED NATIONAL COARSE (UNC) |
| Stud Shank Major Diameter | 0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 OVERALL |
| Turnlock Stud Head Style | FILLISTER |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Securing Device Type | RING |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Turnlock Stud Shank Style | STUD SHANK |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 11439420-5 | Us Army Aviation and Missile Command (USA) |
| 11439420-5 | Fastener Technology Corp (USA) |
| 3010-4 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| 6086555-1 | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| CA2021-4 PRIMARY | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
NSN 5325-01-099-3689 is a Stud,turnlock Fastener, manufactured by Howmet Global Fastening Systems Inc. Div Tridair Products, classified under FSC 5325 (No Item Name Available). Status: active.
NSN 5325-01-099-3689 has 5 cross-referenced part numbers: 11439420-5 (Us Army Aviation and Missile Command), 11439420-5 (Fastener Technology Corp), 3010-4 (Fastener Innovation Technology, Inc. Dba F I T), 6086555-1 (Lockheed Martin Corporation Div Rotary and Mission Systems), CA2021-4 (Howmet Global Fastening Systems Inc. Div Tridair Products).
There are 12 known substitutes for 5325-01-099-3689: 5999-00-007-2736, 3110-00-100-0337, 5950-00-110-8621 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for CA2021-4: Extension Length: 0.156 INCHES NOMINAL IN; Grip Length: 0.313 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Diameter: 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN; Drive Type: SLOTTED OR SOCKET. 13 total characteristics are documented in the Federal Logistics Information System.