The Pin-Rivet, cataloged under National Stock Number 5320-01-481-9310, 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 14 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-481-9310 |
| Primary Part Number | HLT52YC-8-25 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Shank Diameter | 0.249 INCHES NOMINAL IN |
| Head Height | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Fastener Length | 1.947 INCHES MINIMUM AND 1.967 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 1.557 INCHES MINIMUM AND 1.567 INCHES MAXIMUM IN |
| Width Between Flats | 0.094 INCHES MINIMUM AND 0.096 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.415 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| 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 |
|---|---|
| HLT52YB-8-25 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT52YB-8-25 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT52YC-8-25 | West Coast Aerospace, Inc. (USA) |
| HLT52YC-8-25 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT52YC-8-25 PRIMARY | Hi-Shear Corporation (USA) |
| HP4761-4-25 | Heartland Precision Fasteners Inc (USA) |
| ST3M761C4-25 PRIMARY | The Boeing Company Div Defense (USA) |
| HLT52YB-8-25 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT52YB-8-25 | Hi-Shear Corporation (USA) |
| HLT52YB-8-25 | West Coast Aerospace, Inc. (USA) |
| HLT52YC-8-25 | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT52YC-8-25 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT52YB-8-25 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT52YC-8-25 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| HLT52YC-8-25 | 5/9 Secondary reference Sps Technologies Inc |
| ST3M761C4 | D/9 Drawing number reference only The Boeing Company Div Defense |
| HLT52YB-8-25 | 5/2 Secondary reference U.S. Government activity |
| HLT52YC-8-25 | 5/2 Secondary reference U.S. Government activity |
| HLT52YC-8-25 | 5/9 Secondary reference U.S. Government activity |
| HLT52YB-8-25 | 5/9 Secondary reference Sps Technologies Inc |
| HLT52YB-8-25 | 5/9 Secondary reference U.S. Government activity |
| ST3M761C4-25 | 5/9 Secondary reference Fastener Innovation Technology, Inc. Dba F I T |
| HLT52YB-8-25 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-01-481-9310 is a Pin-Rivet, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-481-9310 has 14 manufacturer part numbers on file: HLT52YB-8-25 (Sps Technologies Ltd, Tj Brooks Division), HLT52YB-8-25 (Sps Technologies, Llc Dba PB Fasteners), HLT52YC-8-25 (West Coast Aerospace, Inc.), HLT52YC-8-25 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HLT52YC-8-25 (Hi-Shear Corporation) and 9 more.
Key specifications for HLT52YC-8-25: Shank Diameter: 0.249 INCHES NOMINAL IN; Head Height: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN; Fastener Length: 1.947 INCHES MINIMUM AND 1.967 INCHES MAXIMUM IN; Nominal Thread Size: 0.250 INCHES 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.