The Pin-Rivet, cataloged under National Stock Number 5320-01-451-2805, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. 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through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-451-2805 |
| Primary Part Number | HLT631YC-6-5 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Shank Diameter | 0.189 INCHES NOMINAL IN |
| Fastener Length | 0.627 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN |
| Width Between Flats | 0.079 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Material | STEEL COMP XM-13 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.296 INCHES MINIMUM AND 0.301 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 |
|---|---|
| HLT631YB-6-5 | West Coast Aerospace, Inc. (USA) |
| HLT631YC-6-5 | Hi-Shear Corporation (USA) |
| HLT631YB-6-5 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YC-6-5 | Huck International, Inc (USA) |
| HP4758D3-5 | Heartland Precision Fasteners Inc (USA) |
| HLT631YC-6-5 | Howmet Global Fastening Systems Inc (USA) |
| HLT631YC-6-5 | West Coast Aerospace, Inc. (USA) |
| HLT631YC-6-5 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YB-6-5 | Hi-Shear Corporation (USA) |
| HLT631YB-6-5 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HLT631YB-6-5 | Howmet Global Fastening Systems Inc (USA) |
| HLT631YC-6-5 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT631YB-6-5 | Huck International, Inc (USA) |
| HLT631YB-6-5 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT631YC-6-5 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| HLT631YB-6-5 | 5/9 Secondary reference U.S. Government activity |
| HLT631YC-6-5 | 5/9 Secondary reference Sps Technologies Inc |
| HLT631YC-6-5 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 3929AS1132-D3-5 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| HLT631YB-6-5 | 5/9 Secondary reference Sps Technologies Inc |
| HLT631YC-6-5 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
| ST3M758-3-5 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST3M758D3-5 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HLT631YB-6-5 | C/1 Advisory reference — outside the item-of-supply concept Sps Technologies Ltd, Tj Brooks Division |
NSN 5320-01-451-2805 is a Pin-Rivet, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-451-2805 has 15 manufacturer part numbers on file: HLT631YB-6-5 (West Coast Aerospace, Inc.), HLT631YC-6-5 (Hi-Shear Corporation), HLT631YB-6-5 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT631YC-6-5 (Huck International, Inc), HP4758D3-5 (Heartland Precision Fasteners Inc) and 10 more.
Key specifications for HLT631YC-6-5: Shank Diameter: 0.189 INCHES NOMINAL IN; Fastener Length: 0.627 INCHES MINIMUM AND 0.647 INCHES MAXIMUM IN; Head Style: FLUSH COUNTERSUNK; Thread Direction: RIGHT-HAND. 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.