The Collar,pin-Rivet, cataloged under National Stock Number 5320-01-388-1978, 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 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 — Rivets (FSG 53) |
| Manufacturers | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAGE L4528); Hi-Shear Corporation (CAGE 73197) |
| Parameter | Value |
|---|---|
| NSN | 5320-01-388-1978 |
| Primary Part Number | HST77-8 |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Collar Inside Diameter | 0.261 INCHES MAXIMUM IN |
| Collar Overall Height | 0.440 INCHES MAXIMUM IN |
| Collar Style | THREADED (BREAK OFF) TYPE |
| Collar Outside Diameter | 0.412 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Specification/standard Data | 73197-HST77-8 MANUFACTURERS STANDARD |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | ALUMINUM ALLOY 7075 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 |
NSN 5320-01-388-1978 is a Collar,pin-Rivet, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-388-1978 has 2 manufacturer part numbers on file: HST77-8 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HST77-8 (Hi-Shear Corporation).
Key specifications for HST77-8: Collar Inside Diameter: 0.261 INCHES MAXIMUM IN; Collar Overall Height: 0.440 INCHES MAXIMUM IN; Collar Style: THREADED (BREAK OFF) TYPE; Collar Outside Diameter: 0.412 INCHES MAXIMUM IN. 12 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.