The Pin-Rivet, cataloged under National Stock Number 5320-01-449-5325, 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 19 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-449-5325 |
| Primary Part Number | ST3M758D3-9 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.1810 INCHES MINIMUM AND 0.1840 INCHES MAXIMUM IN |
| Fastener Length | 0.883 INCHES MINIMUM AND 0.893 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hole Depth | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.1900 INCHES IN |
| Grip Length | 0.558 INCHES MINIMUM AND 0.568 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP XM-13 OVERALL |
| Shoulder Length | 0.5131 INCHES MINIMUM AND 0.5210 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.265 INCHES MINIMUM AND 0.272 INCHES MAXIMUM IN |
| Hole Diameter | 0.0791 INCHES MINIMUM AND 0.0806 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 |
|---|---|
| HLT631YB-6-9 | West Coast Aerospace, Inc. (USA) |
| P/N HP4758D3-9 | Heartland Precision Fasteners Inc (USA) |
| ST3M758D3-9 PRIMARY | The Boeing Company Div Defense (USA) |
| HLT631YB-6-9 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YB-6-9 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT631YB-6-9 | Howmet Global Fastening Systems Inc (USA) |
| HLT631YB-6-9 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YB-6-9 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HLT631YB-6-9 | 5/2 Secondary reference U.S. Government activity |
| HLT631YB-6-9 | 5/9 Secondary reference U.S. Government activity |
| HLT631YB-6-9 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HLT631YB-6-9 | 5/9 Secondary reference Sps Technologies Inc |
NSN 5320-01-449-5325 is a Pin-Rivet, manufactured by The Boeing Company Div Defense, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-449-5325 has 8 manufacturer part numbers on file: HLT631YB-6-9 (West Coast Aerospace, Inc.), P/N HP4758D3-9 (Heartland Precision Fasteners Inc), ST3M758D3-9 (The Boeing Company Div Defense), HLT631YB-6-9 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT631YB-6-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for ST3M758D3-9: Shank Diameter: 0.1810 INCHES MINIMUM AND 0.1840 INCHES MAXIMUM IN; Fastener Length: 0.883 INCHES MINIMUM AND 0.893 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hole Depth: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. 19 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.