The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-132-3398, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-132-3398 |
| Primary Part Number | 78686-12 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.043 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Diameter | 1.296 INCHES MAXIMUM IN |
| Drive Point Depth | 0.071 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Thickness | 0.750 INCHES MAXIMUM IN |
| Surface Treatment | COPPER AND NICKEL THREADS |
| Drive Point Quantity | 12 |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | NICKEL ALLOY 718 OVERALL |
| 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 |
|---|---|
| SLN187-12 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| 78686-12 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| H50609-12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BH752-12 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| LH12038-12 | 5/9 Secondary reference Harvard Industries Inc |
| 10109639 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 78686-12 | 5/9 Secondary reference U.S. Government activity |
| ST3M752-12 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M752-12 | 5/1 Secondary reference Apollo Aerospace Components Llc |
| ST3M752-12 | 5/1 Secondary reference Boeing Distribution Services Defense Llc |
NSN 5310-01-132-3398 is a Nut,self-Locking,round, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-132-3398 has 4 manufacturer part numbers on file: SLN187-12 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), 78686-12 (Sps Technologies, Llc Dba PB Fasteners), H50609-12 (Howmet Global Fastening Systems Inc), BH752-12 (Bristol Industries, Llc).
Key specifications for 78686-12: Lubrication: DRY FILM LUBRICANT; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5663 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Drive Point Width: 0.043 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN. 15 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.