The Collar,pin-Rivet, cataloged under National Stock Number 5320-01-566-2175, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-566-2175 |
| Primary Part Number | HL273-10 |
| Item Name | Collar,pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Collar Inside Diameter | 0.330 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN |
| Collar Overall Height | 0.652 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Collar Style | THREADED (BREAK OFF) TYPE |
| Collar Outside Diameter | 0.532 INCHES MINIMUM AND 0.538 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 631 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 |
|---|---|
| HL273-10 | Huck International, Inc (USA) |
| HL273-10 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| HL273-10 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HL273-10 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HL273-10 | West Coast Aerospace, Inc. (USA) |
| HL273-10 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HL273-10 | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HL273-10 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-01-566-2175 is a Collar,pin-Rivet, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-566-2175 has 7 manufacturer part numbers on file: HL273-10 (Huck International, Inc), HL273-10 (Northrop Grumman Systems Corporation), HL273-10 (Sps Technologies, Llc Dba PB Fasteners), HL273-10 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HL273-10 (West Coast Aerospace, Inc.) and 2 more.
Key specifications for HL273-10: Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Collar Inside Diameter: 0.330 INCHES MINIMUM AND 0.336 INCHES MAXIMUM IN; Collar Overall Height: 0.652 INCHES MINIMUM AND 0.672 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.