The Retainer,nut and Bolt, cataloged under National Stock Number 5340-01-184-6676, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-184-6676 |
| Primary Part Number | F39669N3FB |
| Item Name | Retainer,nut and Bolt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE |
| Distance Between Mounting Hole Centers | 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Material Thickness | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Center to Center Distance Between Cup and Mounting Hole | 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| BFN542-3RT | Bristol Industries, Llc (USA) |
| F39669N3FB PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M542-3D | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| F9427-0 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5340-01-184-6676 is a Retainer,nut and Bolt, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-184-6676 has 2 manufacturer part numbers on file: BFN542-3RT (Bristol Industries, Llc), F39669N3FB (Howmet Global Fastening Systems Inc).
Key specifications for F39669N3FB: Overall Height: 0.220 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE; Distance Between Mounting Hole Centers: 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN; Mounting Hole Diameter: 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN. 7 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.