The Pin-Rivet, cataloged under National Stock Number 5320-01-565-7321, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-565-7321 |
| Primary Part Number | ST3M812D4-12 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Fastener Length | 1.175 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN |
| Head Style | FLUSH COUNTERSUNK |
| Grip Length | 0.750 INCHES NOMINAL IN |
| Width Between Flats | 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Head Major Diameter | 0.241 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN |
| 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 |
|---|---|
| ST3M812D4-12 | West Coast Aerospace, Inc. (USA) |
| ST3M812D4-12 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| ST3M812D4-12 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M812D4-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M812D4-12 | Huck International, Inc (USA) |
| ST3M812D4-12 | Heartland Precision Fasteners Inc (USA) |
| ST3M812D4-12 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HLT731DL-8-12 | 5/9 Secondary reference Sps Technologies Inc |
| HLT731DL-8-12 | 5/9 Secondary reference U.S. Government activity |
| HLT731DL-8-12 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| HLT731DL-8-12 | 5/9 Secondary reference Hi-Shear Corporation |
| ST3M812D4-12 | 5/2 Secondary reference U.S. Government activity |
| HLT731DL-8-12 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| HP4812D4-12 | 5/9 Secondary reference Heartland Precision Fasteners Inc |
| HLT731DL-8-12 | 5/9 Secondary reference West Coast Aerospace, Inc. |
| ST3M812D4-12 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5320-01-565-7321 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-565-7321 has 7 manufacturer part numbers on file: ST3M812D4-12 (West Coast Aerospace, Inc.), ST3M812D4-12 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), ST3M812D4-12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M812D4-12 (Sps Technologies, Llc Dba PB Fasteners), ST3M812D4-12 (Huck International, Inc) and 2 more.
Key specifications for ST3M812D4-12: Shank Diameter: 0.264 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Fastener Length: 1.175 INCHES MINIMUM AND 1.195 INCHES MAXIMUM IN; Head Style: FLUSH COUNTERSUNK; Grip Length: 0.750 INCHES NOMINAL IN. 9 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.