The Pin-Rivet, cataloged under National Stock Number 5320-01-548-8299, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-548-8299 |
| Primary Part Number | ST3M812D3-6 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.202 INCHES NOMINAL IN |
| Fastener Length | 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM IN |
| Head Style | FLUSH COUNTERSUNK |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Width Between Flats | 0.079 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.296 INCHES MINIMUM AND 0.301 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 |
|---|---|
| HLT731DL-6-6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| ST3M812D3-6 PRIMARY | The Boeing Company Div Defense (USA) |
| HP4812D3-6 | Heartland Precision Fasteners Inc (USA) |
| HLT731DL-6-6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT731DL-6-6 | West Coast Aerospace, Inc. (USA) |
| HLT731TB-6-6 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT731DL-6-6 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT731DL-6-6 | Hi-Shear Corporation (USA) |
| HLT731TB-6-6 | West Coast Aerospace, Inc. (USA) |
| HLT731TB-6-6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT731TB-6-6 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HLT731DL-6-6 | 5/9 Secondary reference U.S. Government activity |
| HLT731DL-6-6 | 5/2 Secondary reference U.S. Government activity |
| HLT731TB-6-6 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-01-548-8299 is a Pin-Rivet, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-548-8299 has 11 manufacturer part numbers on file: HLT731DL-6-6 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), ST3M812D3-6 (The Boeing Company Div Defense), HP4812D3-6 (Heartland Precision Fasteners Inc), HLT731DL-6-6 (Sps Technologies, Llc Dba PB Fasteners), HLT731DL-6-6 (West Coast Aerospace, Inc.) and 6 more.
Key specifications for ST3M812D3-6: Shank Diameter: 0.202 INCHES NOMINAL IN; Fastener Length: 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM IN; Head Style: FLUSH COUNTERSUNK; Nominal Thread Size: 0.190 INCHES IN. 13 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.