The Retainer,nut and Bolt, cataloged under National Stock Number 5340-00-807-1791, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-00-807-1791 |
| Primary Part Number | 3M156-12 |
| Item Name | Retainer,nut and Bolt |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416, TYPE 1, CLASS 2 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416, TYPE 2, CLASS 2 FED SPEC 2ND TREATMENT RESPONSE |
| Grip Height | 0.246 INCHES NOMINAL IN |
| Style Designator | BARREL |
| Material Document and Classification | AISI C1060 ASSN STD 1ST MATERIAL RESPONSE AND AISI C1050 ASSN STD 2ND MATERIAL RESPONSE |
| Material Thickness | 0.025 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR CADMIUM AND CHROMATE |
| Material | STEEL COMP 1060 OR STEEL COMP 1050 |
| 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 |
|---|---|
| 3M156-12 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 2452-126RET | 5/9 Secondary reference Harvard Industries Inc |
| 2452-126RET | 5/9 Secondary reference Asc International, Inc. Dba Asc International Inc Div Asc International |
| 2452-126RET | 5/2 Secondary reference U.S. Government activity |
NSN 5340-00-807-1791 is a Retainer,nut and Bolt, manufactured by The Boeing Company Div Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-807-1791 has 1 manufacturer part number on file: 3M156-12 (The Boeing Company Div Defense).
Key specifications for 3M156-12: Overall Height: 0.742 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE 1, CLASS 2 FED SPEC 1ST TREATMENT RESPONSE AND QQ-P-416, TYPE 2, CLASS 2 FED SPEC 2ND TREATMENT RESPONSE; Grip Height: 0.246 INCHES NOMINAL IN; Style Designator: BARREL. 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.