The Pin-Rivet, cataloged under National Stock Number 5320-01-645-3660, is classified within Federal Supply Class 5320 (Rivets) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5320-01-645-3660 |
| Primary Part Number | HL449UC-6-3 |
| Item Name | Pin-Rivet |
| FSC / FSG | 5320 / 53 — Rivets |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Shank Diameter | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Head Height | 0.079 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Fastener Length | 0.513 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS5737 FED SPEC SINGLE MATERIAL RESPONSE OR AMS5731 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Head Style | COOPER'S |
| Nominal Thread Size | 0.190 INCHES IN |
| Grip Length | 0.188 INCHES NOMINAL IN |
| Width Between Flats | 0.080 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN |
| Shank Style | PIN-RIVET, STRAIGHT, THREADED |
| Surface Treatment | CADMIUM AND PASSIVATE OVERALL |
| Minimum Tensile Strength | 5820 POUNDS PER SQUARE INCH LBS |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Shear Strength | 9300 DOUBLE POUNDS PER SQUARE INCH |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Major Diameter | 0.377 INCHES MINIMUM AND 0.381 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 |
|---|---|
| BACB30JC6A3 | Huck International, Inc (USA) |
| BACB30JC6A3 | West Coast Aerospace, Inc. (USA) |
| BACB30JC6A3 | Federal Manufacturing Corp (USA) |
| BACB30JC6A3 | Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries (USA) |
| HL449UC-6-3 PRIMARY | Hi-Shear Corporation (USA) |
| BACB30JC6A3 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| BACB30JC6A3 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| BACB30JC6A3 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BACB30JC6A3 | Valley-Todeco, Inc. Dba Arconic Fastening Systems (USA) |
| BACB30JC6A3 | Howmet Global Fastening Systems Inc Div City of Industry Operations (USA) |
| BACB30JC6A3 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| BACB30JC6A3 | Hi-Shear Corporation (USA) |
| BACB30JC6A3 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| BACB30JC6A3 | 3/2 Design control — primary reference U.S. Government activity |
| BACB30JC6A3 | 5/9 Secondary reference Voi-Shan/chatsworth Div of Vsi Corp Sub of Fairchild Industries Inc |
NSN 5320-01-645-3660 is a Pin-Rivet, manufactured by Hi-Shear Corporation, classified under FSC 5320, Rivets. Status: active.
NSN 5320-01-645-3660 has 13 manufacturer part numbers on file: BACB30JC6A3 (Huck International, Inc), BACB30JC6A3 (West Coast Aerospace, Inc.), BACB30JC6A3 (Federal Manufacturing Corp), BACB30JC6A3 (Sonic Industries, Inc. Dba Sonic Industries Inc Div Sonic Industries), HL449UC-6-3 (Hi-Shear Corporation) and 8 more.
1 possible match (shared part number, not a government interchangeability claim): 5320-01-651-1270. Verify interchangeability with system specifications before substitution.
Key specifications for HL449UC-6-3: Shank Diameter: 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN; Head Height: 0.079 INCHES MINIMUM AND 0.081 INCHES MAXIMUM IN; Fastener Length: 0.513 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS-QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.