The Pin-Rivet, cataloged under National Stock Number 5320-01-347-0679, 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 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-347-0679 |
| Primary Part Number | TL521-6-16 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Shank Diameter | 0.4194 INCHES NOMINAL IN |
| Lubrication | CETYL ALCOHOL |
| Head Height | 0.082 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN |
| Fastener Length | 1.396 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | MIL-S-6049 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Tip Diameter | 0.4006 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Grip Length | 0.990 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, TAPERED, THREADED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Shear Strength | 108000 SINGLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 8740 OR STEEL COMP E4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.605 INCHES MINIMUM AND 0.619 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 |
|---|---|
| TL521-6-16 | Reid Products Inc. Dba Reid Products Inc (USA) |
| TL521-6-16 PRIMARY | Huck International, Inc (USA) |
| TL521-6-16 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TL521-6-16 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TL521-6-16 | 5/9 Secondary reference U.S. Government activity |
| TL521-6-16 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-347-0679 is a Pin-Rivet, manufactured by Huck International, Inc, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-347-0679 has 4 manufacturer part numbers on file: TL521-6-16 (Reid Products Inc. Dba Reid Products Inc), TL521-6-16 (Huck International, Inc), TL521-6-16 (Sps Technologies, Llc Dba PB Fasteners), TL521-6-16 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for TL521-6-16: Shank Diameter: 0.4194 INCHES NOMINAL IN; Lubrication: CETYL ALCOHOL; Head Height: 0.082 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN; Fastener Length: 1.396 INCHES MINIMUM AND 1.421 INCHES MAXIMUM IN. 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.