The Stud,turnlock Fastener, cataloged under National Stock Number 5325-00-255-0589, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-255-0589 |
| Primary Part Number | 11439420-3 |
| Item Name | Stud,turnlock Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Drive Type | SOCKET |
| Turnlock Stud Shank Style | STUD SHANK |
| Extension Length | 0.125 INCHES NOMINAL IN |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Diameter | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Securing Device Type | RING |
| Turnlock Stud Head Style | FILLISTER |
| Stud Shank Major Diameter | 0.184 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303 OVERALL |
| Stud Thread Size and Series/type Designator | 0.112-40 UNIFIED NATIONAL COARSE (UNC) |
| Grip Length | 0.188 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 11439420-3 | Fastener Technology Corp (USA) |
| CA2021-2 | Howmet Global Fastening Systems Inc. Div Tridair Products (USA) |
| 11439420-3 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 860140-97 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| SC5325-0097-3 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
| 860140-97 | 5/9 Secondary reference Litton Systems Inc. Div Navigation Systems Division |
| 122608-11 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 6086555-3 | 7/2 Vendor item drawing reference Lockheed Martin Corporation Div Rotary and Mission Systems |
NSN 5325-00-255-0589 is a Stud,turnlock Fastener, manufactured by Us Army Aviation and Missile Command, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-255-0589 has 3 manufacturer part numbers on file: 11439420-3 (Fastener Technology Corp), CA2021-2 (Howmet Global Fastening Systems Inc. Div Tridair Products), 11439420-3 (Us Army Aviation and Missile Command).
Key specifications for 11439420-3: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Drive Type: SOCKET; Turnlock Stud Shank Style: STUD SHANK; Extension Length: 0.125 INCHES NOMINAL IN. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.