The Collar,pin-Rivet, cataloged under National Stock Number 5320-01-591-0400, 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 11 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 | 5320-01-591-0400 |
| Primary Part Number | HL373DY-8 |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Lubrication | SOLID FILM |
| Collar Inside Diameter | 0.286 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Collar Overall Height | 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Collar Style | THREADED (BREAK OFF) TYPE |
| Collar Outside Diameter | 0.423 INCHES MINIMUM AND 0.427 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| HL373DY-8 | Huck International, Inc (USA) |
| HL373DY-8 PRIMARY | Hi-Shear Corporation (USA) |
| HL373DY-8 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL373DY-8 | Howmet Global Fastening Systems Inc (USA) |
| HL373DY-8 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
NSN 5320-01-591-0400 is a Collar,pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-591-0400 has 5 manufacturer part numbers on file: HL373DY-8 (Huck International, Inc), HL373DY-8 (Hi-Shear Corporation), HL373DY-8 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HL373DY-8 (Howmet Global Fastening Systems Inc), HL373DY-8 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company).
Key specifications for HL373DY-8: Lubrication: SOLID FILM; Collar Inside Diameter: 0.286 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN; Collar Overall Height: 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN; Collar Style: THREADED (BREAK OFF) TYPE. 11 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.