The Pin-Rivet, cataloged under National Stock Number 5320-01-676-2978, 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 18 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-676-2978 |
| Primary Part Number | C9570-10-21P |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Shank Diameter | 0.3114 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN |
| Lubrication | DRY FILM AND CETYL ALCOHOL |
| Fastener Length | 1.858 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | MIL-S-5000 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-5626 MIL SPEC 3RD MATERIAL RESPONSE OVERALL |
| Head Style | FLUSH COUNTERSUNK |
| Nominal Thread Size | 0.3125 INCHES IN |
| Grip Length | 1.312 INCHES NOMINAL IN |
| Width Between Flats | 0.1270 INCHES MINIMUM AND 0.1295 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP E4340 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.507 INCHES MINIMUM AND 0.565 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 |
|---|---|
| C9570-10-21P PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 4448S10-21P | Huck International, Inc (USA) |
| C9570-10-21P PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| C9570-10-21P PRIMARY | Huck International, Inc (USA) |
| C9570-10-21P PRIMARY | Abounding Security Inc Div of Maa Corp (USA) |
| C9570-10-21P PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| C9570-10-21P PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| C9570-10-21P | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5320-01-676-2978 is a Pin-Rivet, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-676-2978 has 7 manufacturer part numbers on file: C9570-10-21P (Sps Technologies, Llc Dba PB Fasteners), 4448S10-21P (Huck International, Inc), C9570-10-21P (Howmet Global Fastening Systems Inc), C9570-10-21P (Huck International, Inc), C9570-10-21P (Abounding Security Inc Div of Maa Corp) and 2 more.
Key specifications for C9570-10-21P: Shank Diameter: 0.3114 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN; Lubrication: DRY FILM AND CETYL ALCOHOL; Fastener Length: 1.858 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416, TYPE II, 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.