The Pin-Rivet, cataloged under National Stock Number 5320-01-588-7021, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Fastener Innovation Technology, Inc. Dba F I T. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-588-7021 |
| Primary Part Number | FIT7953-6-21 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Fastener Innovation Technology, Inc. Dba F I T |
| Status | ACTIVE |
| Shank Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Head Height | 0.0667 INCHES MINIMUM AND 0.0688 INCHES MAXIMUM IN |
| Fastener Length | 1.637 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | DPS 4.50-197 (HI-KOTE 1 ONLY) MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS4967 FED STD SINGLE MATERIAL RESPONSE OR AMS4928 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | CROWN COUNTERSUNK LESS THAN 135 DEGREES |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.1900 INCHES IN |
| Grip Length | 1.312 INCHES NOMINAL IN |
| Width Between Flats | 0.0791 INCHES MINIMUM AND 0.0806 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | ALUMINUM OR CHROMATE OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.334 INCHES MINIMUM AND 0.347 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 |
|---|---|
| FIT7953-6-21 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| HST529AP-6-21 PRIMARY | Hi-Shear Corporation (USA) |
| HST529AP-6-21 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HK0097C6-21 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 3D0097C6-21 | 5/2 Secondary reference U.S. Government activity |
| VS3437VAP6-21 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5320-01-588-7021 is a Pin-Rivet, manufactured by Fastener Innovation Technology, Inc. Dba F I T, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-588-7021 has 4 manufacturer part numbers on file: FIT7953-6-21 (Fastener Innovation Technology, Inc. Dba F I T), HST529AP-6-21 (Hi-Shear Corporation), HST529AP-6-21 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HK0097C6-21 (Huck International, Inc).
Key specifications for FIT7953-6-21: Shank Diameter: 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Head Height: 0.0667 INCHES MINIMUM AND 0.0688 INCHES MAXIMUM IN; Fastener Length: 1.637 INCHES NOMINAL 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.