The Collar,pin-Rivet, cataloged under National Stock Number 5320-00-021-7381, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-00-021-7381 |
| Primary Part Number | HL73-12 |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Identification Code Color | BLUE |
| Surface Treatment Document and Classification | AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Collar Inside Diameter | 0.376 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN |
| Collar Overall Height | 0.724 INCHES MINIMUM AND 0.744 INCHES MAXIMUM IN |
| Collar Style | THREADED (BREAK OFF) TYPE |
| Precious Material | SILVER |
| Collar Outside Diameter | 0.622 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Surface Treatment | SILVER OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| HL73-12 | Huck International, Inc (USA) |
| HL73-12 | West Coast Aerospace, Inc. (USA) |
| HL73-12 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL73-12 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL73-12 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL73-12 PRIMARY | Hi-Shear Corporation (USA) |
| HL73-12 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| HL73-12 | 5/2 Secondary reference U.S. Government activity |
| HL73-12 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-00-021-7381 is a Collar,pin-Rivet, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-00-021-7381 has 7 manufacturer part numbers on file: HL73-12 (Huck International, Inc), HL73-12 (West Coast Aerospace, Inc.), HL73-12 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HL73-12 (Sps Technologies, Llc Dba PB Fasteners), HL73-12 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 2 more.
Key specifications for HL73-12: Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Identification Code Color: BLUE; Surface Treatment Document and Classification: AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Collar Inside Diameter: 0.376 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN. 16 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.