The Collar,pin-Rivet, cataloged under National Stock Number 5320-01-321-9050, 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 12 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-321-9050 |
| Primary Part Number | HL97DU-6 |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Lubrication | DRY FILM |
| Collar Inside Diameter | 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN |
| Collar Overall Height | 0.437 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN |
| Collar Style | THREADED (BREAK OFF) TYPE |
| Collar Outside Diameter | 0.303 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5731 SST FED SPEC 1ST MATERIAL RESPONSE OR AMS 5734 SST FED SPEC 2ND MATERIAL RESPONSE OR AMS 5736 SST FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 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 |
|---|---|
| HL97DU-6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST2185-06 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| HL97DU-6 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HL97DU-6 | 5/2 Secondary reference U.S. Government activity |
| 5320PL0751601 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| HL97DU-6 | 5/9 Secondary reference Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| HL97DU-6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| HL97DU-6 | 5/9 Secondary reference Huck International, Inc |
NSN 5320-01-321-9050 is a Collar,pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-321-9050 has 3 manufacturer part numbers on file: HL97DU-6 (Sps Technologies, Llc Dba PB Fasteners), ST2185-06 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), HL97DU-6 (Hi-Shear Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5320-01-669-6671, 5320-01-670-0513. Verify interchangeability with system specifications before substitution.
Key specifications for HL97DU-6: Lubrication: DRY FILM; Collar Inside Diameter: 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN; Collar Overall Height: 0.437 INCHES MINIMUM AND 0.457 INCHES MAXIMUM IN; Collar Style: THREADED (BREAK OFF) TYPE. 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.