The Stud,turnbutton Fastener, cataloged under National Stock Number 5325-00-055-7451, 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 25 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-055-7451 |
| Primary Part Number | 9986981 |
| Item Name | Stud,turnbutton Fastener |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Button Thickness | 0.312 INCHES NOMINAL IN |
| End Length | 0.625 INCHES NOMINAL IN |
| Turnbutton Stud Style | MACHINE SCREW |
| Surface Treatment Document and Classification | MIL-F-495 MIL SPEC 1ST TREATMENT RESPONSE BARREL |
| Surface Treatment Document and Classification | MIL-F-495 MIL SPEC 4TH TREATMENT RESPONSE TOP |
| Surface Treatment Document and Classification | QQ-Z-325 TYPE 2 CLASS 3 FED SPEC 2ND TREATMENT RESPONSE EJECTOR SPRING |
| Surface Treatment Document and Classification | QQ-Z-325 TYPE 2 CLASS 3 FED SPEC 3RD TREATMENT RESPONSE STUD |
| Socket Accommodated Quantity | 1 |
| Button Width | 0.531 INCHES NOMINAL IN |
| Material Document and Classification | FED-STD-66 FED STD 3RD MATERIAL RESPONSE STUD |
| Material Document and Classification | MIL-S-7947 COND A MIL SPEC 2ND MATERIAL RESPONSE EJECTOR SPRING |
| Material Document and Classification | QQ-B-626 COMP 1 OR 2 1/2 HARD FED SPEC 1ST MATERIAL RESPONSE BARREL |
| Material Document and Classification | QQ-B-626 COMP 1 OR 2 1?2 HARD FED SPEC 4TH MATERIAL RESPONSE TOP |
| Base Width | 0.530 INCHES MINIMUM IN |
| Base Length | 0.785 INCHES MINIMUM IN |
| Height | 0.763 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN |
| Surface Treatment | CHROMATE STUD |
| Surface Treatment | CHROMATE EJECTOR SPRING |
| Surface Treatment | OXIDE FILM BARREL |
| Surface Treatment | OXIDE FILM TOP |
| Material | COPPER ALLOY BARREL |
| Material | COPPER ALLOY TOP |
| Material | STEEL EJECTOR SPRING |
| Material | STEEL COMP 1010 OR STEEL COMP 1020 STUD |
| Thread Size and Series/type Designator | 0.190-32 UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 9986981 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| XX78328-20 | 5/9 Secondary reference U.S. Government activity |
| 12553023 | 7/2 Vendor item drawing reference Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
NSN 5325-00-055-7451 is a Stud,turnbutton Fastener, manufactured by Us Army Aviation and Missile Command, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-055-7451 has 1 manufacturer part number on file: 9986981 (Us Army Aviation and Missile Command).
Key specifications for 9986981: Button Thickness: 0.312 INCHES NOMINAL IN; End Length: 0.625 INCHES NOMINAL IN; Turnbutton Stud Style: MACHINE SCREW; Surface Treatment Document and Classification: MIL-F-495 MIL SPEC 1ST TREATMENT RESPONSE BARREL. 25 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.