The Pin-Rivet, cataloged under National Stock Number 5320-01-476-1791, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc Div City of Industry Operations. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5320-01-476-1791 |
| Primary Part Number | VS3449VAP8X4 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Howmet Global Fastening Systems Inc Div City of Industry Operations |
| Status | ACTIVE |
| Shank Diameter | 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN |
| Lubrication | CETYL ALCOHOL |
| Head Height | 0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN |
| Fastener Length | 0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | HI-SHEAR SPEC.NO.294(HI-KOTE 1 ONLY) MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Grip Length | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Width Between Flats | 0.122 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Head Minor Diameter | 0.375 INCHES MINIMUM AND 0.388 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Countersink Height | 0.0623 INCHES MINIMUM AND 0.0694 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY UNS R56400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.3898 INCHES MINIMUM AND 0.3948 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 |
|---|---|
| VS3449VAP8X4 PRIMARY | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| WC198A-8X4 PRIMARY | West Coast Aerospace, Inc. (USA) |
| HK0098C8X4 PRIMARY | Huck International, Inc (USA) |
| HST627AP-8-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HST627AP-8-4 PRIMARY | Hi-Shear Corporation (USA) |
| VS3449VAP8X4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HST627AP-8-4 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| HST627AP-8-4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| HST627AP-8-4 | 5/9 Secondary reference Sps Technologies Inc |
| VS3449VAP8X4 | 5/9 Secondary reference U.S. Government activity |
| 3D0098C8X4 | 5/2 Secondary reference U.S. Government activity |
NSN 5320-01-476-1791 is a Pin-Rivet, manufactured by Howmet Global Fastening Systems Inc Div City of Industry Operations, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-476-1791 has 8 manufacturer part numbers on file: VS3449VAP8X4 (Howmet Global Fastening Systems Inc Div City of Industry Operations), WC198A-8X4 (West Coast Aerospace, Inc.), HK0098C8X4 (Huck International, Inc), HST627AP-8-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HST627AP-8-4 (Hi-Shear Corporation) and 3 more.
Key specifications for VS3449VAP8X4: Shank Diameter: 0.2646 INCHES MINIMUM AND 0.2651 INCHES MAXIMUM IN; Lubrication: CETYL ALCOHOL; Head Height: 0.010 INCHES MINIMUM AND 0.015 INCHES MAXIMUM IN; Fastener Length: 0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN. 20 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.