The Pin-Rivet, cataloged under National Stock Number 5320-01-448-2596, 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 13 specifications, cited from the U.S. Government catalog. The record lists 15 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-448-2596 |
| Primary Part Number | HLT631YC-6-4 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.1890 INCHES NOMINAL IN |
| Head Height | 0.0449 INCHES NOMINAL IN |
| Fastener Length | 0.560 INCHES NOMINAL IN |
| Material Document and Classification | AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.245 INCHES NOMINAL IN |
| Width Between Flats | 0.0791 INCHES NOMINAL IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Thread Class | 3A A |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.2966 INCHES NOMINAL 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 |
|---|---|
| HLT631YC-6-4 PRIMARY | Hi-Shear Corporation (USA) |
| HLT631YB-6-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HLT631YC-6-4 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT631YB-6-4 PRIMARY | Hi-Shear Corporation (USA) |
| HLT631YC-6-4 PRIMARY | Huck International, Inc (USA) |
| HLT631YB-6-4 PRIMARY | Huck International, Inc (USA) |
| HP4758D3-4 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| HLT631YB-6-4 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HLT631YB-6-4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YC-6-4 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YB-6-4 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YC-6-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HLT631YC-6-4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YB-6-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT631YC-6-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HLT631YB-6-4 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
| HLT631YB-6-4 | 5/9 Secondary reference Laticrete International Inc |
| HLT631YC-6-4 | 5/9 Secondary reference Sps Technologies Inc |
| HLT631YC-6-4 | 3/2 Design control — primary reference U.S. Government activity |
| ST3M758D3-4 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 3929AS1132-D3-4 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| HLT631YB-6-4 | 5/9 Secondary reference U.S. Government activity |
| HLT631YB-6-4 | 5/9 Secondary reference Sps Technologies Inc |
| HLT631YC-6-4 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
NSN 5320-01-448-2596 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-448-2596 has 15 manufacturer part numbers on file: HLT631YC-6-4 (Hi-Shear Corporation), HLT631YB-6-4 (Howmet Global Fastening Systems Inc), HLT631YC-6-4 (West Coast Aerospace, Inc.), HLT631YB-6-4 (Hi-Shear Corporation), HLT631YC-6-4 (Huck International, Inc) and 10 more.
Key specifications for HLT631YC-6-4: Shank Diameter: 0.1890 INCHES NOMINAL IN; Head Height: 0.0449 INCHES NOMINAL IN; Fastener Length: 0.560 INCHES NOMINAL IN; Material Document and Classification: AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 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.