The Nut,plain,spline, cataloged under National Stock Number 5310-00-557-5152, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5310-00-557-5152 |
| Primary Part Number | ST3M405-2-08 |
| Item Name | Nut,plain,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJC |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Pilot Diameter | 0.275 INCHES NOMINAL IN |
| Pilot Length | 0.085 INCHES NOMINAL IN |
| Nut Height | 0.247 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL 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 |
|---|---|
| ST3M405-2-08 PRIMARY | The Boeing Company Div Defense (USA) |
| LHC9514-2-82 | Esna, Llc (USA) |
| H29971-08-2 | Howmet Global Fastening Systems Inc (USA) |
| H29971-08-2 | Satair A/s (DNK) |
| 70524-832-2 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 70524-832-2 | 5/9 Secondary reference U.S. Government activity |
| LHC9514-2-82 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-557-5152 is a Nut,plain,spline, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-557-5152 has 5 manufacturer part numbers on file: ST3M405-2-08 (The Boeing Company Div Defense), LHC9514-2-82 (Esna, Llc), H29971-08-2 (Howmet Global Fastening Systems Inc), H29971-08-2 (Satair A/s), 70524-832-2 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for ST3M405-2-08: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNJC; Temp Rating: 450.0 FAHRENHEIT NOMINAL DEGF; Thread Direction: RIGHT-HAND. 12 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.