The Pin-Rivet, cataloged under National Stock Number 5320-01-591-0084, 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 17 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-591-0084 |
| Primary Part Number | HL646LL-16-18 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Head Height | 0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Fastener Length | 1.810 INCHES NOMINAL IN |
| Material Document and Classification | AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | STRAIGHT PAN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Grip Length | 1.125 INCHES NOMINAL IN |
| Width Between Flats | 0.269 INCHES MINIMUM AND 0.289 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Shear Strength | 49100 DOUBLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP XM-13 OVERALL |
| Head Major Diameter | 0.735 INCHES MINIMUM AND 0.770 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 |
|---|---|
| HL646LL-16-18 PRIMARY | Hi-Shear Corporation (USA) |
| HL646LL-16-18 | West Coast Aerospace, Inc. (USA) |
| HL646LL-16-18 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL646LL-16-18 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL646LL-16-18 | Huck International, Inc (USA) |
| HL646LL-16-18 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HL646LL-16-18 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-01-591-0084 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-591-0084 has 6 manufacturer part numbers on file: HL646LL-16-18 (Hi-Shear Corporation), HL646LL-16-18 (West Coast Aerospace, Inc.), HL646LL-16-18 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL646LL-16-18 (Sps Technologies, Llc Dba PB Fasteners), HL646LL-16-18 (Huck International, Inc) and 1 more.
Key specifications for HL646LL-16-18: Shank Diameter: 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Head Height: 0.178 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Fastener Length: 1.810 INCHES NOMINAL IN. 17 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.