The Pin-Rivet, cataloged under National Stock Number 5320-01-378-9503, 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 17 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-378-9503 |
| Primary Part Number | HLT451AP-8-4 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Shank Diameter | 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP |
| Fastener Length | 0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Tip Diameter | 0.241 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, TAPERED, THREADED |
| Minimum Tensile Strength | 3700 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 9300 DOUBLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.389 INCHES MINIMUM AND 0.394 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 |
|---|---|
| HLT451AP-8-4 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT451AP-8-4 | Huck International, Inc (USA) |
| HLT451AP-8-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 03A074-8-4A | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| AIC-L779V4K-4 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT451AP-8-4 | Howmet Global Fastening Systems Inc (USA) |
| HLT451AP-8-4 | West Coast Aerospace, Inc. (USA) |
| HLT451AP-8-4 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HLT451AP-8-4 | 5/2 Secondary reference U.S. Government activity |
| HLT451AP-8-4 | 5/9 Secondary reference Sps Technologies Inc |
| HLT451AP-8-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-378-9503 is a Pin-Rivet, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-378-9503 has 8 manufacturer part numbers on file: HLT451AP-8-4 (Sps Technologies, Llc Dba PB Fasteners), HLT451AP-8-4 (Huck International, Inc), HLT451AP-8-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 03A074-8-4A (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), AIC-L779V4K-4 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 3 more.
Key specifications for HLT451AP-8-4: Shank Diameter: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL, SPEC 305, HI-SHEAR CORP; Fastener Length: 0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN; Material Document and Classification: AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.