The Pin-Rivet, cataloged under National Stock Number 5320-01-477-5642, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-477-5642 |
| Primary Part Number | HLT633YC-12-18 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.374 INCHES NOMINAL IN |
| Lubrication | SOLID FILM AND CETYL ALCOHOL |
| Fastener Length | 0.910 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Criticality Code Justification | AGAV |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Grip Length | 0.375 INCHES NOMINAL IN |
| Width Between Flats | 0.158 INCHES MINIMUM AND 0.161 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | PASSIVATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.724 INCHES MINIMUM AND 0.734 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 | Y |
| Part Number | Manufacturer |
|---|---|
| HLT633YC-12-18 PRIMARY | Huck International, Inc (USA) |
| HLT633YB-12-18 | West Coast Aerospace, Inc. (USA) |
| HLT633YC-12-18 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT633YC-12-18 PRIMARY | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HLT633YB-12-18 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M760D6-18 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HLT633YB-12-18 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HLT633YC-12-18 PRIMARY | Hi-Shear Corporation (USA) |
| HLT633YC-12-18 | West Coast Aerospace, Inc. (USA) |
| HLT633YB-12-18 PRIMARY | Huck International, Inc (USA) |
| HLT633YC-12-18 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HLT633YB-12-18 PRIMARY | Hi-Shear Corporation (USA) |
| HLT633YB-12-18 PRIMARY | Sps Technologies Ltd, Tj Brooks Division (GBR) |
| HP4760D6-18 PRIMARY | Heartland Precision Fasteners Inc (USA) |
| ST3M760D6-18 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| HLT633YB-12-18 | 3/2 Design control — primary reference U.S. Government activity |
| HLT633YC-12-18 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-477-5642 is a Pin-Rivet, manufactured by Huck International, Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-477-5642 has 15 manufacturer part numbers on file: HLT633YC-12-18 (Huck International, Inc), HLT633YB-12-18 (West Coast Aerospace, Inc.), HLT633YC-12-18 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), HLT633YC-12-18 (Sps Technologies Ltd, Tj Brooks Division), HLT633YB-12-18 (Sps Technologies, Llc Dba PB Fasteners) and 10 more.
Key specifications for HLT633YC-12-18: Shank Diameter: 0.374 INCHES NOMINAL IN; Lubrication: SOLID FILM AND CETYL ALCOHOL; Fastener Length: 0.910 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 19 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.