The Nut,plain,slotted,hexagon, cataloged under National Stock Number 5310-01-119-9345, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 14 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-119-9345 |
| Primary Part Number | 3M891-12 |
| Item Name | Nut,plain,slotted,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Width Across Flats | 1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Height | 0.458 INCHES MINIMUM AND 0.478 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 110.0 DEGREES NOMINAL NUT |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | IRON ALLOY 660 OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 3M891-12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 3M891-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 3M891-12 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 3M891-12 | 5/9 Secondary reference U.S. Government activity |
| 10109354 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| H52351-12 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| E12674-12 | 5/9 Secondary reference Harvard Industries Inc |
| 79537-1216 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| AD3M891-12 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-119-9345 is a Nut,plain,slotted,hexagon, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-119-9345 has 2 manufacturer part numbers on file: 3M891-12 (Howmet Global Fastening Systems Inc), 3M891-12 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 3M891-12: Width Across Flats: 1.109 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 14 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.