The Nut,plain,round, cataloged under National Stock Number 5310-01-135-3548, 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 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-135-3548 |
| Primary Part Number | ST3M756-12 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Treatment Document and Classification | PS13143,TY 2,CL 3 MFR REF 1ST TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.094 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Diameter | 1.230 INCHES MAXIMUM IN |
| Drive Point Depth | 0.075 INCHES MINIMUM AND 0.077 INCHES MAXIMUM IN |
| Nut Thickness | 0.560 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Drive Point Quantity | 12 |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | IRON ALLOY 660 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 |
|---|---|
| H52369-12 | Howmet Global Fastening Systems Inc (USA) |
| ST3M756-12 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M756-12 | Invicta A/s (NOR) |
| ST3M756-12 | Natural Gas Solutions North America Llc Div Industrial Products Group (USA) |
| Reference | Meaning |
|---|---|
| ST3M756-12 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 10109723 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| VN340112126 | 5/2 Secondary reference U.S. Government activity |
| 78721-1216 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5310-01-135-3548 is a Nut,plain,round, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-135-3548 has 4 manufacturer part numbers on file: H52369-12 (Howmet Global Fastening Systems Inc), ST3M756-12 (Sps Technologies, Llc Dba PB Fasteners), ST3M756-12 (Invicta A/s), ST3M756-12 (Natural Gas Solutions North America Llc Div Industrial Products Group).
Key specifications for ST3M756-12: Surface Treatment Document and Classification: PS13143,TY 2,CL 3 MFR REF 1ST TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Drive Point Width: 0.094 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN. 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.