The Collar,pin-Rivet, cataloged under National Stock Number 5320-01-315-0249, is classified within Federal Supply Class 5320 (Rivets) 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 3 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-315-0249 |
| Primary Part Number | ST3M525N8ME |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | CETYL ALCOHOL |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Collar Inside Diameter | 0.450 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN |
| Collar Overall Height | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Collar Style | THREADED (BREAK OFF) TYPE |
| Collar Outside Diameter | 0.809 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN |
| Heat Treatment | T-6 SOLUTION HEAT TREATED OVERALL |
| Material Document and Classification | QQ-A-430 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| ST3M525N8ME PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M525N8ME PRIMARY | Hi-Shear Corporation (USA) |
| ST3M525N8ME PRIMARY | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| Reference | Meaning |
|---|---|
| HL570-16MC | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HL570-16MC | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| ST3M525N8ME | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| ST3M525N8ME | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HL570-16MC | 5/9 Secondary reference U.S. Government activity |
| HL570-16MC | 5/9 Secondary reference Hi-Shear Corporation |
NSN 5320-01-315-0249 is a Collar,pin-Rivet, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-315-0249 has 3 manufacturer part numbers on file: ST3M525N8ME (Sps Technologies, Llc Dba PB Fasteners), ST3M525N8ME (Hi-Shear Corporation), ST3M525N8ME (Howmet Global Fastening Systems Inc. Div Voi-Shan Products).
Key specifications for ST3M525N8ME: Lubrication: CETYL ALCOHOL; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Collar Inside Diameter: 0.450 INCHES MINIMUM AND 0.456 INCHES MAXIMUM IN; Collar Overall Height: 0.490 INCHES MINIMUM AND 0.510 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.