The Pin-Rivet, cataloged under National Stock Number 5320-01-321-2516, 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 Div PB Fasteners. Government technical data includes 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-321-2516 |
| Primary Part Number | TL501-4-12 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Shank Diameter | 0.2729 INCHES NOMINAL IN |
| Lubrication | CETYL ALCOHOL |
| Fastener Length | 1.072 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 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 | 0.2604 INCHES NOMINAL IN |
| Head Style | FLUSH COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.740 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, TAPERED, THREADED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Minimum Tensile Strength | 180000 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Material | STEEL COMP 8740 OR STEEL COMP 4340 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.426 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 |
|---|---|
| TL501-4-12 | Huck International, Inc (USA) |
| TL501-4-12 | Reid Products Inc. Dba Reid Products Inc (USA) |
| TL501-4-12 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| TL501-4-12 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| Reference | Meaning |
|---|---|
| TL501-4-12 | 5/9 Secondary reference U.S. Government activity |
| TL501-4-12 | 5/2 Secondary reference U.S. Government activity |
| TL501-4-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5320-01-321-2516 is a Pin-Rivet, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-321-2516 has 4 manufacturer part numbers on file: TL501-4-12 (Huck International, Inc), TL501-4-12 (Reid Products Inc. Dba Reid Products Inc), TL501-4-12 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), TL501-4-12 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products).
Key specifications for TL501-4-12: Shank Diameter: 0.2729 INCHES NOMINAL IN; Lubrication: CETYL ALCOHOL; Fastener Length: 1.072 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.