The Pin-Rivet, cataloged under National Stock Number 5320-01-666-1753, 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 19 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-666-1753 |
| Primary Part Number | HL21-12-17 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Head Height | 0.160 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416,TYPE 1,CLASS 2 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS6415,AMS6349 OR AMS6049 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Tip Diameter | 0.3640 INCHES MINIMUM AND 0.3680 INCHES MAXIMUM IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Grip Length | 1.0575 INCHES MINIMUM AND 1.0675 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, TAPERED, THREADED |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.7556 INCHES MINIMUM AND 0.7604 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 |
|---|---|
| HL21-12-17 | Howmet Global Fastening Systems Inc (USA) |
| HL21-12-17 | West Coast Aerospace, Inc. (USA) |
| HL21-12-17 PRIMARY | Hi-Shear Corporation (USA) |
| HL21-12-17 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL21-12-17 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
NSN 5320-01-666-1753 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-666-1753 has 5 manufacturer part numbers on file: HL21-12-17 (Howmet Global Fastening Systems Inc), HL21-12-17 (West Coast Aerospace, Inc.), HL21-12-17 (Hi-Shear Corporation), HL21-12-17 (Sps Technologies, Llc Dba PB Fasteners), HL21-12-17 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for HL21-12-17: Shank Diameter: 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Head Height: 0.160 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS-QQ-P-416,TYPE 1,CLASS 2 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.